EP2643122B1 - Shim-mask stencil - Google Patents
Shim-mask stencil Download PDFInfo
- Publication number
- EP2643122B1 EP2643122B1 EP11805114.3A EP11805114A EP2643122B1 EP 2643122 B1 EP2643122 B1 EP 2643122B1 EP 11805114 A EP11805114 A EP 11805114A EP 2643122 B1 EP2643122 B1 EP 2643122B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stencil
- abrasive
- abrading
- slicing
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 238000000034 method Methods 0.000 claims description 13
- 238000005299 abrasion Methods 0.000 claims description 9
- 230000000873 masking effect Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000003486 chemical etching Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 11
- 230000008439 repair process Effects 0.000 description 8
- 239000003082 abrasive agent Substances 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/06—Stencils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
Definitions
- the present invention relates to a method of abrading or slicing-off a high point of a surface, for example in the vehicle refinishing trade.
- a high spot as previously mentioned may be removed by selecting a stencil with a suitable size and shape of hole, placing this hole over the high spot (the stencil maybe taped into position or hand-held against the surface to be worked on), so that the high spot is exposed and then slicing the excess material with a very sharp blade e.g. a one sided razor blade over the stencil held at near to horizontal to the stencil, before abrading either by hand with an abrasive wrapped around a suitable sanding block, or by means of a sanding machine.
- a very sharp blade e.g. a one sided razor blade
- the material within the selected hole in the stencil will stand as high as the thickness of the stencil, if a hard block or backing plate is employed, which may then be finished with a fine abrasive once the stencil has been removed, so minimising risk of damage to the surrounding surface.
- the area inside the stencil shape will be abraded and can be feathered by placing successively larger sized shapes over the repair spot and abrading with successively finer abrasives.
- Masking stencils US6099388 and US5399421 are cited as they perform the function of protecting the surrounding area while an abrasive process is carried out.
- the key difference is that the current application is designed for protection of a surface on which undesired high spots need to be eliminated by abrasion and to a precision that is as close as possible to the surface surrounding the high spot, including the exposed area inside the stencil hole, without causing damage to it.
- the current application is not intended to eliminate low spots.
- mask 20 would resist an abrasive being passed across its surface nor is it designed to be as thin as practically possible and so would not permit the abrasion of a high spot to near flush with the surface.
- US 6099388 shows a protective mask whose characteristics are:
- Abrasion is carried out "with radial strokes relative to the compact disc” column 7, line 30 "the radial strokes extending from side to side IN the localised area” column 7, lines 31 and 32.
- the hole to localise the "area is cut in the mask” column 7 line 3
- this suggests that the material is not sufficiently resistant to withstand sanding with a mechanical sander. If the hole were cut by a mechanical method e.g. scissors or a sharp knife, this would lead to burring or at least an inexact edge which would result in the stencil not lying perfectly flat on the surface, if the mask were made of a sufficiently resistant material. If the mask did lie flat after manually cutting a hole, this would suggest that the material would not be resistant enough to serve the purpose of the current invention.
- patent US5399421 designed to abrade undesired high spots to a level near flush with the surface, but rather to protect the surrounding area only outside the stencil hole while the abrasive process removes material from the surface to a level lower than the remaining surface.
- a method of abrading or slicing-off a high point of a surface comprising the steps of a) providing a stencil comprising a sheet of flexible, abrasion-resistant stainless steel, the masking stencil having a plurality of apertures therein, the apertures having been formed by chemical etching and the stencil having a thickness from 0.03mm to 0.05mm, b) locating the stencil with the high point being positioned within a selected aperture, and c) passing a blade or abrasive tool over the stencil, until the high point is reduced to the height of the stencil thickness.
- FIG. 1 a top view of a stencil (1) is shown, manufactured from 0.05mm to 0.03mm hard quality stainless steel shim in a sheet measuring 12cm by 12cm, with holes (2) designed to expose typical spot repairs, namely lacquer runs, imperfections and paint-filled chips or scratches, and created by a process to ensure that edges are flush with stencil body, for example an etching process.
- the etched holes are calculated to be of a dimension that will not allow the abrasive block, sanding machine pad or blade, when held horizontal to the surface, to make contact with the surface to be protected at any point, i.e.
- the stainless steel employed to make the stencil offers high durability to the abrasion process so that the surface to be protected is so, prevents the stencil from oxidation, which would affect its uniform positioning on the surface, and allows the stencil to be re-used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
- ing And Chemical Polishing (AREA)
Description
- The present invention relates to a method of abrading or slicing-off a high point of a surface, for example in the vehicle refinishing trade.
- When a technician is performing a repair for example abrading excess material after filling a stone chip or scratch with paint or needs to remove a run as a result of incorrect lacquer application, the area surrounding the area to be abraded must be protected if damage is to be avoided. This is commonly done by applying adhesive masking tape, the disadvantages of which are that the tape is easily abraded by the abrasive material employed and is too thick to be near flush with the surface so that when the abrasive is passed over the tape, the area under repair is still considerably higher than the remaining surface, meaning that the repair must be finished without masking tape if a flush repair is to be achieved, increasing the risk of damage to the surrounding area.
- By using a protective stencil having the properties of being very thin whilst being resistant to abrasive materials, a high spot as previously mentioned may be removed by selecting a stencil with a suitable size and shape of hole, placing this hole over the high spot (the stencil maybe taped into position or hand-held against the surface to be worked on), so that the high spot is exposed and then slicing the excess material with a very sharp blade e.g. a one sided razor blade over the stencil held at near to horizontal to the stencil, before abrading either by hand with an abrasive wrapped around a suitable sanding block, or by means of a sanding machine. The result will be that the material within the selected hole in the stencil will stand as high as the thickness of the stencil, if a hard block or backing plate is employed, which may then be finished with a fine abrasive once the stencil has been removed, so minimising risk of damage to the surrounding surface.
- If a softer block or backing pad is employed the area inside the stencil shape will be abraded and can be feathered by placing successively larger sized shapes over the repair spot and abrading with successively finer abrasives.
-
- The key difference is that the current application is designed for protection of a surface on which undesired high spots need to be eliminated by abrasion and to a precision that is as close as possible to the surface surrounding the high spot, including the exposed area inside the stencil hole, without causing damage to it.
- The current application is not intended to eliminate low spots.
- Although application
US6099388 cites a mask 20, this mask is not designed to be used in conjunction with a sanding block being used across its surface, but rather to limit the repair area, the abrasion being carried out inside the stencil shape to eliminate a scratch which is lower than the surrounding surface. - There is no evidence that mask 20 would resist an abrasive being passed across its surface nor is it designed to be as thin as practically possible and so would not permit the abrasion of a high spot to near flush with the surface.
-
US 6099388 shows a protective mask whose characteristics are: - "Preferably the mask is of a plastics material" Column 4 line 40
- "The material of the mask has electrostatic cling" Column 4, line 41
- Neither of the above features suggest that the mask would withstand a mechanical sander being passed over the top whilst still protecting the area underneath, in fact quite the contrary is suggested. This is because the mask is not intended to be sanded across, but rather to limit the repair area, the mild abrasion process being carried out within the limits of the exposed area
- Abrasion is carried out "with radial strokes relative to the compact disc" column 7, line 30 "the radial strokes extending from side to side IN the localised area" column 7, lines 31 and 32. Also if the hole to localise the "area is cut in the mask" column 7 line 3, this suggests that the material is not sufficiently resistant to withstand sanding with a mechanical sander. If the hole were cut by a mechanical method e.g. scissors or a sharp knife, this would lead to burring or at least an inexact edge which would result in the stencil not lying perfectly flat on the surface, if the mask were made of a sufficiently resistant material. If the mask did lie flat after manually cutting a hole, this would suggest that the material would not be resistant enough to serve the purpose of the current invention.
- The reason that the current invention lies perfectly flat is that stencil holes in a very abrasion-resistant material are chemically etched so no burring of edges occurs.
- Neither is patent
US5399421 designed to abrade undesired high spots to a level near flush with the surface, but rather to protect the surrounding area only outside the stencil hole while the abrasive process removes material from the surface to a level lower than the remaining surface. - There is no evidence that the vinyl material proposed would allow an abrasive sheet with block to be passed over it with little resistance nor that the surface is as flat and regular as the stainless steel proposed in the current application to allow the precision of sanding required, nor indeed that the stencil is thin enough to allow slicing and sanding to near flush as is the objective of the current application.
- According to the present invention, there is provided a method of abrading or slicing-off a high point of a surface, comprising the steps of a) providing a stencil comprising a sheet of flexible, abrasion-resistant stainless steel, the masking stencil having a plurality of apertures therein, the apertures having been formed by chemical etching and the stencil having a thickness from 0.03mm to 0.05mm, b) locating the stencil with the high point being positioned within a selected aperture, and c) passing a blade or abrasive tool over the stencil, until the high point is reduced to the height of the stencil thickness. Preferred features are described in the dependent claims.
- A preferred embodiment of the stencil included in the method will now be given. Referring to
figure 1 , a top view of a stencil (1) is shown, manufactured from 0.05mm to 0.03mm hard quality stainless steel shim in a sheet measuring 12cm by 12cm, with holes (2) designed to expose typical spot repairs, namely lacquer runs, imperfections and paint-filled chips or scratches, and created by a process to ensure that edges are flush with stencil body, for example an etching process. The etched holes are calculated to be of a dimension that will not allow the abrasive block, sanding machine pad or blade, when held horizontal to the surface, to make contact with the surface to be protected at any point, i.e. the dimensions of the holes are too small to allow the sanding block, machine pad or blade to fit completely inside. The stainless steel employed to make the stencil offers high durability to the abrasion process so that the surface to be protected is so, prevents the stencil from oxidation, which would affect its uniform positioning on the surface, and allows the stencil to be re-used.
Claims (4)
- A method of abrading or slicing-off a high point of a surface, comprising the steps of:a. providing a stencil comprising a sheet of flexible, abrasion-resistant stainless steel, the masking stencil having a plurality of apertures therein, the apertures having been formed by chemical etching and the stencil having a thickness from 0.03mm to 0.05mm,b. locating the stencil with the high point being positioned within a selected aperture, andc. passing a blade or abrasive tool over the stencil, until the high point is reduced to the height of the stencil thickness.
- A method of abrading or slicing-off as claimed in claim 1, further comprising the steps of:d. locating a larger sized shape, having a larger aperture than the first stencil, with the high point being positioned within the aperture, ande. passing a blade or abrasive tool over the larger sized shape.
- A method of abrading or slicing-off as claimed in claim 2, in which an abrasive is used in steps (c) and (e), and in which a finer abrasive is used in step (e) than in step (c).
- A method of abrading or slicing-off as claimed in any one of claims 1 to 3, in which the apertures through the stencil are smaller than the dimension of the blade or abrasive tool.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1019690.5A GB2485594B (en) | 2010-11-22 | 2010-11-22 | Shim-mask stencil |
PCT/GB2011/001610 WO2012069777A1 (en) | 2010-11-22 | 2011-11-16 | Shim-mask stencil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2643122A1 EP2643122A1 (en) | 2013-10-02 |
EP2643122B1 true EP2643122B1 (en) | 2015-11-04 |
Family
ID=43467037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11805114.3A Not-in-force EP2643122B1 (en) | 2010-11-22 | 2011-11-16 | Shim-mask stencil |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130244543A1 (en) |
EP (1) | EP2643122B1 (en) |
JP (1) | JP2013544661A (en) |
CN (1) | CN103282161A (en) |
BR (1) | BR112013012470A2 (en) |
CA (1) | CA2818456A1 (en) |
GB (1) | GB2485594B (en) |
WO (1) | WO2012069777A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2556102A (en) * | 2016-11-21 | 2018-05-23 | Wilkinson Alan | Improved method of abrading or slicing off a high point of a surface |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9614815B2 (en) * | 2013-12-30 | 2017-04-04 | Vasco Data Security, Inc. | Authentication apparatus with a bluetooth interface |
DE202014007284U1 (en) | 2014-09-12 | 2014-09-30 | Kwk Holding Kg | Cover template for sanding protruding unevenness of paint surfaces |
JP6449840B2 (en) * | 2016-12-27 | 2019-01-09 | 株式会社Mhiエアロスペースプロダクション | Aircraft skin repair method, power tool and attachment |
DE102017219110A1 (en) | 2017-10-25 | 2019-04-25 | Onsystem Technic Gmbh | masking template |
CN111843837A (en) * | 2019-04-29 | 2020-10-30 | 北京铂阳顶荣光伏科技有限公司 | Sand blasting machine and solar substrate production line |
KR102656383B1 (en) * | 2024-01-11 | 2024-04-11 | 씨티씨 주식회사 | Polishing auxiliary device for steel coating and method using the same |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US315472A (en) * | 1885-04-14 | Art of ornamenting glass | ||
US680227A (en) * | 1901-06-08 | 1901-08-13 | Virginia I Copland | Erasing-shield. |
US742445A (en) * | 1903-03-09 | 1903-10-27 | James M Keep | Erasing-shield. |
US1431917A (en) * | 1920-09-11 | 1922-10-17 | Hrant G Antaramian | Ornamenting process and apparatus |
US1720568A (en) * | 1928-09-14 | 1929-07-09 | Cross Brothers Company | Sand-blast carving and method of making the same |
US1720569A (en) * | 1928-09-18 | 1929-07-09 | Cross Brothers Company | Sand-blast carving and method of making the same |
US1769599A (en) * | 1929-03-13 | 1930-07-01 | Samuel A Neidich | Method of etching celluloid and the like |
US1940539A (en) * | 1932-06-08 | 1933-12-19 | Fritsche Rudolf | Device for making corrections on lithographic printing surfaces |
US2005456A (en) * | 1932-06-11 | 1935-06-18 | Rca Corp | Variable resistance device |
US2251646A (en) * | 1939-05-25 | 1941-08-05 | Minnesota Mining & Mfg | Sandblast stencil |
US2466890A (en) * | 1945-01-15 | 1949-04-12 | Honeywell Regulator Co | Method of soldering to a nickel alloy coil |
JPS57156169A (en) * | 1981-03-20 | 1982-09-27 | Nippon Columbia Co Ltd | Metal mask for sandblast |
JP2679467B2 (en) * | 1991-09-06 | 1997-11-19 | 豊田合成株式会社 | Masking coating method for molded products |
US5399421A (en) * | 1991-11-12 | 1995-03-21 | Gaska Tape, Inc. | Vinyl film stencil |
US6099388A (en) * | 1997-08-06 | 2000-08-08 | Fritsch; Joseph F | Method and apparatus for repairing a damaged compact disc |
JPH1187287A (en) * | 1997-09-05 | 1999-03-30 | Fujitsu Ltd | Planarizing polishing method for substrate |
US6629877B2 (en) * | 2001-02-21 | 2003-10-07 | Leon A. Cerniway | Precision glass grinding |
CN2726802Y (en) * | 2004-09-17 | 2005-09-21 | 朴文锡 | Sand blasting die block |
US7367869B2 (en) * | 2006-05-02 | 2008-05-06 | U.S. Technology Corporation | Method of masking and a hot melt adhesive for use therewith |
CH700883A1 (en) * | 2009-04-22 | 2010-10-29 | Alstom Technology Ltd | Method for producing a with a slot as test plan provided body. |
-
2010
- 2010-11-22 GB GB1019690.5A patent/GB2485594B/en not_active Expired - Fee Related
-
2011
- 2011-11-16 CA CA2818456A patent/CA2818456A1/en not_active Abandoned
- 2011-11-16 BR BR112013012470A patent/BR112013012470A2/en not_active Application Discontinuation
- 2011-11-16 EP EP11805114.3A patent/EP2643122B1/en not_active Not-in-force
- 2011-11-16 WO PCT/GB2011/001610 patent/WO2012069777A1/en active Application Filing
- 2011-11-16 US US13/988,368 patent/US20130244543A1/en not_active Abandoned
- 2011-11-16 CN CN2011800642101A patent/CN103282161A/en active Pending
- 2011-11-16 JP JP2013539330A patent/JP2013544661A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2556102A (en) * | 2016-11-21 | 2018-05-23 | Wilkinson Alan | Improved method of abrading or slicing off a high point of a surface |
WO2018091932A1 (en) * | 2016-11-21 | 2018-05-24 | Alan Wilkinson | Apparatus and method for abrading or slicing-off a high point of a surface |
Also Published As
Publication number | Publication date |
---|---|
GB2485594B (en) | 2012-10-24 |
EP2643122A1 (en) | 2013-10-02 |
US20130244543A1 (en) | 2013-09-19 |
GB2485594A (en) | 2012-05-23 |
WO2012069777A1 (en) | 2012-05-31 |
CN103282161A (en) | 2013-09-04 |
BR112013012470A2 (en) | 2016-09-06 |
GB201019690D0 (en) | 2011-01-05 |
JP2013544661A (en) | 2013-12-19 |
CA2818456A1 (en) | 2012-05-31 |
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