JP2006125196A - Connecting method of woody members - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting method capable of easily performing a connecting work between members while reducing the cost and ensuring sufficient connecting force and strength. <P>SOLUTION: In this connecting method of woody members, a bottomed screw hole 15 is provided on an end surface 11 of a horizontal frame member 10, and a through screw hole 25 extending from an inside surface 21 to an outside surface 22 is provided in a vertical frame member 20. A cylindrical positioning guide sleeve 30 is arranged so that one half part 31 thereof is inserted to the bottomed screw hole 15 and the other half part 32 is inserted to the through screw hole 25, and the shank 41 of a small screw 40 is inserted to the through screw hole 25 and a cylindrical hole of the positioning guide sleeve 30 in that state, and screwed to the bottom of the bottomed screw hole 15 in the horizontal frame member 10, whereby both the frame members 10 and 20 are fixed in a mutually pressure-contact state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention, for example, when joining the vertical frame material and the horizontal frame material in a door frame, sliding door frame, opening frame, folding door frame, window frame, etc. Further, the present invention relates to a method for joining wood-based members that are preferably used when joining each of a bottom plate and the like.

  2. Description of the Related Art Conventionally, when a vertical member and a horizontal member such as housing joinery and furniture are joined and fixed to each other, as shown in FIG. 8, for example, a dowel hole (4a) is formed on the end surface of the horizontal member (1), and A dowel hole (4b) is formed at the end of the member (2), and the dowel (3) fitted in the dowel hole (4a) of the transverse member (1) is connected to the dowel hole (4b) via an adhesive. And the transverse member (1) and the longitudinal member (2) are fixed to each other.

  However, in this dowel bonding method, the bonding force is weak, and there is a possibility that it will be unintentionally peeled off.

  Therefore, in addition to the dowel bonding method, a method of improving the bonding force by using screws, nails or the like is also employed.

  In such a screw combination system, a screw or the like may be screwed into the same position as the dowel (3), but in that case, the dowel (3) may be damaged by the screw, leading to a decrease in strength. In this case, a method of screwing a screw at a position different from the dowel (3) is adopted.

  For example, as shown in FIG. 9A, before screwing screws, pilot holes (6a) and (6b) for screw guides are formed in the transverse member (1) and the longitudinal member (2) in advance to prevent member cracking. A screw (5) is typically screwed along the pilot holes (6a) and (6b) as shown in FIG.

  However, in this screw combination method, since the screw hole is formed in addition to the dowel hole in the horizontal member (1) and the vertical member (2), there is a problem that the hollow portion increases and the strength is lowered. To do.

  Further, since the dowel holes (4a) (4b) and the lower holes (6a) (6b) usually have different diameters, when forming these holes, a drill or a drill having different diameters is used appropriately. In order to ensure sufficient positional accuracy between the dowel holes for positioning (4a) (4b) and the pilot holes (6a) (6b) for screwing. In addition, it is necessary to form the holes (4a), (4b), (6a), and (6b) with high positional accuracy. Also in this respect, the drilling operation becomes troublesome and the member joining operation is difficult. .

  Furthermore, since it is necessary to screw the screw (5) over a long range from the vertical member (2) to the horizontal member (1), there is a problem that the burden on the operator increases and the joining work becomes more difficult. It was.

  Further, as shown in FIG. 10A, when the screw (5) is screwed in a state where the gap (S) is formed between the members (1) and (2), both the members (1) and (2) ) Does not change, the gap (S) remains as it is, as shown in FIG. 5B, and the transverse member (1) cannot be abutted against the longitudinal member (2). There also arises a problem that the joining force cannot be secured.

  On the other hand, Japanese Utility Model Laid-Open No. 5-57284 (Patent Document 1) discloses a frame material joining structure using a guide nut with a guide.

In this structure, as shown in FIG. 11, the main body (8a) of the guide nut (8) is embedded and fixed to the nut fixing hole (9a) on the end surface of the lateral member (1) by screwing or the like, After the guide hole (9b) is formed in the vertical member (2), the cylindrical guide (8b) of the demon nut (8) is inserted into the guide hole (9b) and temporarily assembled. (9c) is inserted into the guide hole (9b) and the guide (8b) of the demon nut (8) and screwed into the main body (8a), thereby joining the members (1) and (2). Is.
Japanese Utility Model Publication No. 5-57284

  However, the demon nut (8) needs to cut a female screw for screwing on the inner peripheral surface or a male screw for fixing the demon nut itself on the outer peripheral surface, and has a very complicated structure. Therefore, there is a problem that the manufacturing is difficult and the cost is increased.

  The nut fixing hole (9a) formed in the horizontal member (1) and the guide hole (9b) formed in the vertical member (2) have different diameters. Since it is necessary to use properly different drills and drills, it is not possible to obtain good workability as described above, and it is necessary to perform troublesome screwing work to fix and fix the demon nut (8). Therefore, there has been a problem that the member joining operation becomes more difficult.

  The present invention provides a method for joining wood-based members that solves the above-mentioned problems of the prior art, can obtain sufficient joining force and strength while reducing costs, and can easily perform joining work between members. The purpose is to do.

In order to achieve the above object, the method for joining wood-based members of the present invention comprises:
A method for joining wood-based members, in which the joint surfaces of the first members of the wood system are fixed to each other in a state where they are in contact with the joint surfaces of the second members,
A bottomed screw hole having a predetermined depth is formed in the joint surface of the first member, and a through screw hole penetrating from the joint surface to the outer surface is formed in the second member so as to correspond to the bottomed screw hole. Forming,
Subsequently, one half of the cylindrical positioning guide sleeve having both ends opened is press-fitted into the bottomed screw hole of the first member and fixed, and the other half of the sleeve projects from the joint surface of the first member. Placed in
Next, the other half of the positioning guide sleeve is fitted into the through screw hole of the second member, and the temporary assembly of both members is brought into a state where the joint surface of the first member is abutted against the joint surface of the second member. Done
After the temporary assembly in this way, the shaft portion of the screw whose head is larger than the through screw hole is formed from the outer surface side of the second member, and the through screw hole and positioning guide sleeve larger than the outer diameter of the shaft portion. The second member is fixed to the first member in a state of being inserted into the cylindrical hole, screwed into the bottom of the bottomed screw hole in the first member, and screwed into the bottom of the first member. This is a method for joining wood-based members.

  In the method for joining wooden members of the present invention, the guide sleeve inserted into the bottomed screw hole of the first member such as the horizontal frame member is inserted into the through screw hole of the second member such as the vertical frame member. Therefore, the alignment between the two frame members can be performed by the insertion.

  Furthermore, since the screw holes formed in both members can be formed with the same size, each screw hole can be formed with the same drilling tool.

  In addition, since the screw holes are also used as positioning holes, the number of holes can be reduced compared to the case where positioning holes are provided separately, and the cavity of both members can be reduced and positioning can be performed. Since it is not necessary to consider the positional relationship with the hole, the drilling operation can be performed easily.

  Further, since the screw is inserted through the second member and screwed into the first member, the screwing operation for the second member of the screw is unnecessary, and the screwing operation is completed only by the screwing operation for the first member.

  Moreover, the screw that is screwed into the bottomed screw hole of the first member is only inserted and disposed in the through screw hole of the second member, and the second member is not fixed to the shaft portion of the screw. Even if a gap is formed, by screwing the screw into the first member, the second member can be securely sandwiched between the head of the screw and the first member, and the gap between the two members can be eliminated. Both members can be sufficiently pressed.

  In addition, since the positioning guide sleeve has a simple structure, for example, a conventional demon nut has no troublesome processing such as forming a female screw on the inner peripheral surface or forming a male screw on the outer peripheral surface. It is not necessary and can be manufactured easily and inexpensively.

  On the other hand, in the present invention, it is preferable to employ a configuration in which a flange portion that can be locked to the periphery of the opening of the bottomed screw hole in the first member is provided on the outer peripheral surface of the intermediate portion of the positioning guide sleeve. .

  That is, when this configuration is adopted, even if the bottomed screw hole of the first member is formed deeper than the insertion amount of the guide sleeve, the flange portion is formed at the periphery of the screw hole when the guide sleeve is inserted into the screw hole. The amount of insertion of the guide sleeve can be moderately controlled by locking the guide sleeve.

  Further, in the present invention, it is desirable to employ a configuration in which a retaining protrusion that can be retained in a retaining state is provided on the inner peripheral surface of the bottomed screw hole on the outer peripheral surface of one half of the positioning guide sleeve.

  That is, when this structure is adopted, when the guide sleeve is inserted into the screw hole of the first member, the retaining projection bites into the inner peripheral surface of the screw hole, so that the guide sleeve can be prevented from being detached. Can be mounted in a stable state.

  In the present invention, the wood-based member refers to a screw-fastening member capable of fixing a screw by screwing. The bottomed screw hole is a hole having a bottom portion that can be screwed. In the present invention, the first half and the other half need not have the same length.

  As described above, according to the wood member joining method of the present invention, one half of the guide sleeve is inserted into the bottomed screw hole of the first member such as the lateral frame member, and the other half of the sleeve is attached. Since it inserts in the penetration screw hole of 2nd members, such as a vertical frame material, the alignment between both members can be performed by the insertion, and it can join with a sufficient positional accuracy. Further, since the screw holes formed in both members can be formed with the same size, each hole can be formed with the same drilling tool, and the member joining operation can be easily performed. In addition, since the screw holes are also used as positioning holes, the number of holes can be reduced compared to the case where positioning holes are separately provided, the drilling work can be easily performed, and the member joining work can be performed. Further, it can be performed more easily, and the hollow portions of both members can be reduced, and sufficient strength can be ensured. Furthermore, since it is not necessary to consider the positional relationship with the positioning hole, it is possible to perform the drilling operation more easily and further improve the workability. Further, since the screw is inserted through the second member and screwed into the first member, the screwing operation for the second member of the screw is unnecessary, and the troublesome screwing operation is completed only by screwing the first member. Therefore, the burden on the operator can be reduced and the workability can be further improved. Further, even if a gap is formed between the two members in the temporarily assembled state, the gap can be eliminated by screwing in the screw, and the two members can be pressed with sufficient joining force. In addition, since the positioning guide sleeve has a simple structure that does not require a male screw or a female screw, the positioning guide sleeve can be manufactured easily and inexpensively, and the cost can be reduced.

  On the other hand, in the present invention, when the collar portion is formed on the outer periphery of the intermediate portion of the positioning guide sleeve, the guide sleeve is provided even if the bottomed screw hole of the first member is formed deeper than the insertion amount of the guide sleeve. When inserted into the bottomed screw hole, the collar is locked to the periphery of the opening of the screw hole, so that the amount of guide sleeve insertion can be appropriately controlled, and the member joining operation is made easier and more reliable. There is an advantage that can be done.

  In the present invention, when the retaining projection is formed on the outer periphery of the half of the positioning guide sleeve, when the guide sleeve is inserted into the bottomed screw hole of the first member, the retaining projection becomes the inner peripheral surface of the screw hole. Therefore, there is an advantage that the guide sleeve can be prevented from being pulled out and the sleeve can be prevented from being accidentally removed.

  FIG. 1 is an exploded perspective view showing a joint structure between a vertical frame member and a horizontal frame member in a door frame or the like according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the joint structure.

  As shown in both figures, the joining structure of the present embodiment includes a horizontal frame member (10) as a first member and a vertical frame member (20) as a second member, as well as a positioning guide sleeve (30) and a wood screw. Screw (40) is used.

  In the present embodiment, the horizontal frame member (10) and the vertical frame member (20) can be preferably made of a wood-based member, and in particular, plywood, LVL (wafer board), medium fiberboard, particle A board, an oriented strand board, a laminated board, a solid wood, etc. can be used more suitably. Moreover, as a frame material (10) (20), these wood type members may be used independently, or a plurality of types may be used in combination.

  Further, the horizontal frame member (10) and the vertical frame member (20) may be made of the same material or different materials.

  In the present invention, out of both frame members (both members) that are bonded and fixed to each other, at least the member to be screwed may be made of a wood-based member. Only the frame member (10) may be a wood-based member.

  The positioning guide sleeve (30) has a cylindrical shape with both ends open, and the diameter (inner diameter) of the tube hole is set larger than the outer diameter of the shaft (41) of the screw (40) described later. The length is set shorter than the shaft portion (41) of the screw (40).

  The material of the positioning guide sleeve (30) is not particularly limited. For example, the positioning guide sleeve (30) is made of a metal such as iron or aluminum, or a synthetic resin such as ABS resin (acrylonitrile / butadiene / styrene copolymer). Can be preferably used.

  The screw (40) has such a length that the shaft portion (41) reaches the bottom of the bottomed screw hole (15) through a through screw hole (25) described later, and the head (42) A thing larger than a through screw hole (25) is used.

  In this embodiment, when the horizontal frame member (10) and the vertical frame member (20) are joined and fixed, first, as shown in FIG. 1 and FIG. And forming a bottomed screw hole (15) having a predetermined depth in the end face (11) of the horizontal frame member (10), and corresponding to the screw hole (15), the vertical frame member (20) A through screw hole (25) penetrating from the inner surface (21) to the outer surface (22) is formed.

  Subsequently, as shown in FIGS. 1 and 2 (b), one half (31) of the positioning guide sleeve (30) is press-fitted and fixed into the bottomed screw hole (15) of the horizontal frame member (10), The other half (32) of the sleeve (30) is disposed so as to protrude from the end face (11) of the horizontal frame member (10). In addition, if an adhesive etc. are apply | coated to the half part (31) of a guide sleeve (30), a guide sleeve (30) can be more stably inserted in a horizontal frame material (10). .

  Next, the other half portion (32) of the positioning guide sleeve (30) is fitted into the through screw hole (25) of the vertical frame member (20), and the end surface (11) of the horizontal frame member (10) is fixed to the vertical frame member. Abutting on the inner surface (21) of (20), the frame members (10) and (20) are temporarily assembled.

  Here, in this embodiment, the bottomed screw hole (15) formed in the horizontal frame member (10) has an inner diameter guide sleeve (30) so that the guide sleeve (30) can be press-fitted into the hole (15). It is preferable to form substantially the same as the outer diameter of 30). However, in the present invention, the inner diameter of the bottomed screw hole (15) is not particularly limited, and may be set to any size as long as the guide sleeve (30) can be inserted. .

  In addition, the depth of the bottomed screw hole (15) is set to be substantially the same as the insertion depth of the guide sleeve (30), that is, the length of the half (31), in order to stabilize the insertion amount of the guide sleeve (30). Is preferred. As will be described later, the bottomed screw hole (15) may be formed deeper than the insertion amount of the guide sleeve (30). In short, the screw (40) is screwed into the bottom of the bottomed screw hole (15). Any depth can be used.

  Further, the through screw hole (25) needs to be formed so that its inner diameter is larger than the outer diameter of the positioning guide sleeve (30) and smaller than the head of the screw (40). In this embodiment, the inner diameter of the through screw hole (25) is set to be substantially the same as the inner diameter of the bottomed screw hole (15) so that the same hole drilling tool for forming the bottomed screw hole can be used. is doing.

  After performing the temporary assembly in this manner, as shown in FIGS. 1 and 2B and 2C, the screw (40) is inserted from the outer surface (22) side of the vertical frame member (20) to the through screw hole (25) and The vertical frame member (20) is brought into contact with the horizontal frame member (10) through the cylindrical holes of the positioning guide sleeve (30) and screwed into the bottom of the bottomed screw hole (15) in the horizontal frame member (10). Fixed to each other.

  Thereby, the joint structure of this embodiment is formed.

  As described above, according to this joint structure, one half (31) of the guide sleeve (30) is inserted into the bottomed screw hole (15) of the horizontal frame member (10), and the other half (32). Is inserted into the through screw hole (25) of the vertical frame member (20), so that the frame member (10) (20) can be aligned by the insertion and can be assembled with high accuracy. .

  Furthermore, since the screw holes (15) and (25) formed in the frame members (10) and (20) can be set to the same size, the screw holes (15) and (25) are formed with the same drilling tool. Can be formed. For this reason, it is not necessary to perform the troublesome work of properly using different drilling tools such as drills and drills having different diameters, and the workability can be improved accordingly.

  Since the screw holes (15) and (25) are also used for positioning, the number of holes can be reduced as compared with the case where the positioning holes and the screw holes are provided separately. Therefore, the hollow part of both frame materials (10) and (20) decreases, and sufficient intensity | strength can be ensured. Furthermore, since it is not necessary to consider the positional relationship with the positioning holes, the hole-piercing operation can be performed easily.

  Furthermore, since the screw (40) is inserted into the vertical frame member (20) and screwed into the horizontal frame member (10), the screw (40) is not required to be screwed into the vertical frame member (20). The screwing operation is completed only by screwing the material (10). Therefore, troublesome screw screwing work is reduced, the burden on the operator is reduced, and the joining work can be easily performed.

  Moreover, in this embodiment, even if a gap is formed between both frame members (10) and (20) in the temporarily assembled state, by screwing the screw (40), the gap is eliminated and both The frame members (10) and (20) are fixed in a strongly pressed state. That is, the screw (40) screwed into the bottomed screw hole (15) of the horizontal frame member (10) is merely inserted into the through screw hole (25) of the vertical frame member (20). (20) is not fixed to the shaft (41) of the screw (40). Therefore, by screwing the screw (40) into the horizontal frame member (10), the vertical frame member (20) can be securely sandwiched between the head (42) of the screw (40) and the horizontal frame member (10). The horizontal frame member (10) and the vertical frame member (20) can be strongly pressed against each other, and both the frame members (10) and (20) can be sufficiently pressed together.

  Moreover, in this embodiment, since the positioning guide sleeve (30) has a simple structure, a female screw is formed on the inner peripheral surface, or a male screw is formed on the outer peripheral surface, for example, like a conventional demon nut. Therefore, it can be manufactured easily and inexpensively, and cost reduction and production efficiency can be improved.

  Moreover, in this embodiment, since each frame material (10) (20) is connected and fixed by the screw (40), if the screw (40) is removed at the time of disassembly, each frame material (10) (20) is removed. Each part can be reused because it is not damaged. For this reason, for example, when moving the storage furniture etc. to which this joining structure is applied, after disassembling the furniture, each disassembly part can be moved, and it can assemble and install again on the spot. Accordingly, the degree of freedom of conveyance is increased and the transfer operation can be easily performed. Needless to say, it can be reused as long as the present joining structure is applied to a fitting such as an opening frame and a door frame.

  On the other hand, in the present invention, as shown in FIGS. 3 (a) and 3 (b), by forming the flange portion (36) on the outer periphery of the intermediate portion of the positioning guide sleeve (30), the lateral frame member (10) Even when the bottomed screw hole (15) is formed deeper than the insertion amount of the sleeve (30), when the sleeve (30) is inserted into the bottomed screw hole (15), the collar portion (36 ) Is locked to the peripheral edge of the screw hole opening of the horizontal frame member (10), so that the amount of insertion of the sleeve (30) can be appropriately controlled. Therefore, the amount of insertion of the sleeve (30) can always be kept appropriate, and assembly can be performed more easily and reliably.

  In the present invention, as shown in FIG. 4, when the retaining projection (37) is formed on the outer periphery of one half of the positioning guide sleeve (30), the guide sleeve (30) is attached to the horizontal frame member (10). Since the retaining protrusion (37) bites into the inner peripheral surface of the screw hole (15) when being inserted into the bottomed screw hole (15), the sleeve (30) is prevented from being removed, and the sleeve (30) Can be prevented from inadvertently exiting.

  Further, in the present invention, as shown in FIG. 5, when the horizontal frame member (10) is a material that is easily broken, the bottom portion of the bottomed screw hole (15) can be effectively prevented. A pilot hole (15a) may be formed in the bottom. Further, even when the pilot hole (15a) is formed in this way, it is only necessary to form the pilot hole (15a) on the bottom surface of the bottomed screw hole (15). The pilot hole (15a) can be formed with high positional accuracy.

  Moreover, in this invention, it is preferable to comprise so that the head (42) of a screw (40) may not protrude from the outer surface of a vertical frame material (20). Therefore, as shown in FIG. 6A, the insertion length of the positioning guide sleeve (30) with respect to the vertical frame member (20) is at least the screw head (42) than the plate thickness of the vertical frame member (20). The portion (L) that can be embedded is preferably set short. However, as shown in FIG. 5B, when the bottomed screw hole (15) of the horizontal frame member (10) is formed deeper than the insertion amount of the screw (40), the screw (40) Simultaneously with the screwing, the guide sleeve (30) is pushed into the inside so that the screw head (42) can be embedded. Therefore, when the bottomed screw hole (15) is deep like this, the guide sleeve (30) You may make it set the insertion length with respect to the vertical frame material (20) to the board thickness grade or more.

  In the above embodiment, the end face (11) of the horizontal frame member (10) and the inner side surface (21) of the vertical frame member (20) are joined as the joining surface, but the present invention is not limited thereto, The side surface of the horizontal frame member (10) may be abutted and joined to the end surface of the vertical frame member (20). In this case, needless to say, the bottomed screw hole (15) is formed on the end surface of the vertical frame member (20). And a screw may be screwed into the bottom of the hole.

  Furthermore, in the present invention, as shown in FIGS. 7A to 7C, one or both of the horizontal frame member (10) and the vertical frame member (20) are appropriately cut out into shapes corresponding to each other. Then, the joining surfaces (11) and (21) may be formed, and both the frame members (10) and (20) may be joined and fixed.

  In the above embodiment, the case where the frame materials of the joinery such as the sliding door frame, the opening frame, and the folding door frame are joined is described, but the present invention is not limited thereto, for example, a side plate in furniture or the like, The present invention can also be applied to joining between the top plate and the bottom plate, joining between the side plate and the shelf plate, and joining between the top plate or the bottom plate and the partition plate.

It is a disassembled perspective view which shows the joining structure of the wooden frame material which is embodiment of this invention. It is sectional drawing which shows the joining structure of the wooden frame material in embodiment, Comprising: The figure (a) is an exploded sectional view, The figure (b) is sectional drawing which shows a temporary assembly state, The figure (c) is assembly | attachment. It is sectional drawing which shows a completion state. It is sectional drawing which shows the joining structure as a modification of this invention, Comprising: The figure (a) is an exploded sectional view, The figure (b) is sectional drawing which shows the state in the middle of an assembly. It is sectional drawing which shows the positioning guide sleeve applicable to the joining structure of this invention. It is sectional drawing which shows the horizontal frame material applied to the junction structure of the other modification of this invention. It is sectional drawing which shows the junction structure as another modification of this invention. It is sectional drawing which shows the junction structure as another modification of this invention. It is a disassembled sectional view which shows the joining structure of the conventional wooden frame material. It is sectional drawing which shows the joining structure of the other conventional wooden frame material, Comprising: The figure (a) is sectional drawing which shows a temporary assembly state, The figure (b) is sectional drawing which shows an assembly completion state. It is sectional drawing which shows the joining structure of the other conventional wooden frame material in the state in which the clearance gap was formed between frame materials, Comprising: The same figure (a) is sectional drawing which shows a temporary assembly state, The figure (b) It is sectional drawing which shows an assembly completion state. It is a disassembled sectional view which shows the joining structure of another conventional wooden frame material.

Explanation of symbols

10 ... Horizontal frame material (first member)
11 ... End face (joint face)
15 ... Bottom screw holes 20 ... Vertical frame material (second member)
21 ... Inner surface (joint surface)
22 ... Outer surface (outer surface)
25 ... Through screw hole 30 ... Positioning guide sleeve 31 ... One half 32 ... Other half 36 ... Collar 37 ... Retaining protrusion 40 ... Screw

Claims (1)

A method for joining wood-based members, in which the joint surfaces of the first members of the wood system are fixed to each other in a state where they are in contact with the joint surfaces of the second members,
A bottomed screw hole having a predetermined depth is formed in the joint surface of the first member, and a through screw hole penetrating from the joint surface to the outer surface is formed in the second member so as to correspond to the bottomed screw hole. Forming,
Subsequently, one half of the cylindrical positioning guide sleeve having both ends opened is pressed into the bottomed screw hole of the first member and fixed, and the other half of the sleeve protrudes from the joint surface of the first member. Placed in
Next, the other half of the positioning guide sleeve is fitted into the through screw hole of the second member, and the temporary assembly of both members is brought into a state where the joint surface of the first member is abutted against the joint surface of the second member. Done
After the temporary assembly in this way, the shaft portion of the screw whose head is larger than the through screw hole is formed from the outer surface side of the second member, and the through screw hole and positioning guide sleeve larger than the outer diameter of the shaft portion. The second member is fixed to the first member in a state of being inserted into the cylindrical hole, screwed into the bottom of the bottomed screw hole in the first member, and screwed into the bottom of the first member. A method for joining wood-based members.

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