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Forums10
Topics38,579
Posts546,661
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Most Online1,344 Apr 29th, 2024
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Joined: Aug 2013
Posts: 973 Likes: 23
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 973 Likes: 23 |
What methods do folks use to file out pits in a smooth concave rubs?
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Joined: May 2010
Posts: 1,533 Likes: 91
Sidelock
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Sidelock
Joined: May 2010
Posts: 1,533 Likes: 91 |
A great deal of care as you do not know how thin they can be.
Two ways I can suggest , make a wooden block the profile of the concave and either wrap a piece of emery cloth round it . Or , take a half round file cut off the tang and adhere it to a block of wood say two inches deep as a handle and use as a float . Shaped scrapers can also be used but again with caution and some practice .
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Joined: Dec 2001
Posts: 7,000 Likes: 402
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 7,000 Likes: 402 |
Round mold makers stones or soft stones work great as well.
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Joined: Jan 2002
Posts: 1,570 Likes: 75
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 1,570 Likes: 75 |
Bill. I heat up a chainsaw file to red just ahead of the handle then bend to about a 45. You can now lay the file flat on the rib. I do same with a rod slipped inside some rubber tubing to make a backer for low tack PSA abrasive.
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Joined: Aug 2013
Posts: 973 Likes: 23
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 973 Likes: 23 |
The bent chainsaw file is working great, Mark. I bent it to provide a handle, and also bent the nose up slightly so it doesnt dig in anywhere.
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Joined: Aug 2013
Posts: 973 Likes: 23
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 973 Likes: 23 |
I do same with a rod slipped inside some rubber tubing to make a backer for low tack PSA abrasive. What is PSA abrasive?
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Joined: Jan 2002
Posts: 13,203 Likes: 1178
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,203 Likes: 1178 |
Peel and stick adhesive. (PSA)
SRH
May God bless America and those who defend her.
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Joined: Jan 2002
Posts: 1,570 Likes: 75
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 1,570 Likes: 75 |
The bent chainsaw file is working great, Mark. I bent it to provide a handle, and also bent the nose up slightly so it doesnt dig in anywhere. Bill, I just grind a radius on the end to prevent scratching . Hear is the paper I use. It sticks but does not bond so it removes easily . I also use Norton A275 sheets as well. https://www.nortonabrasives.com/en-us/a275op-ao-fine-grit-paper-psa-roll
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Joined: Aug 2018
Posts: 305 Likes: 7
Sidelock
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Sidelock
Joined: Aug 2018
Posts: 305 Likes: 7 |
What a great place to hang out. You guys and your willingness to share are truly inspirational.
Many Thanks
Travis
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Joined: Aug 2013
Posts: 973 Likes: 23
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 973 Likes: 23 |
Thanks Mark. Ive been using various diameters of heater hose, split lengthwise. It will flex nicely as the barrel taper changes. I think that paper would well for that use as well.
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