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The Woodturning Forum - Woodturner's Resource › Woodturning Forum › Finishing › When To Stop Sanding?

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When To Stop Sanding? (Read 524 times)

Don Stephan

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When To Stop Sanding?
Nov 9^th, 2022 at 7:40pm

Another wood turning article I read described sanding through I believe 600. Years ago I was going to prove my finisher friend wrong, carefully handplaned a piece of cherry, then hand sanded one end with 600 and the other end with 220. Then applied shellac via french polish. I couldn't tell the difference.

And for those applying a film finish (Nitro cellulose, acrylic, poly, . . .) the label instructions often say do not sand beyond 220. If wanting to sand beyond, make some adhesion tests on scrap wood is a good idea.

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Ed Weber WR Administrator WR Patron Offline Posts: 8,985 Wilton California USA Gender:	Re: When To Stop Sanding? Reply #1 - Nov 10^th, 2022 at 10:57am Speaking only for myself, I never had an adhesion problem with top coats. I frequently sand well beyond what is called for.
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Glenn Jacobs WR Addict Offline JC L&S Posts: 2,077 North DFW, Texas Texas USA Gender:	Re: When To Stop Sanding? Reply #2 - Nov 10^th, 2022 at 1:44pm The biggest thing I've found is to sand fine enough to not have any sanding marks show. And they always show up after finish is applied and part taken out into the sun. Does sun shine cause scratches? Glenn J.
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David Moeller Senior Member Offline Old chiseler Posts: 330 Linden Michigan USA Gender:	Re: When To Stop Sanding? Reply #3 - Nov 10^th, 2022 at 2:23pm Yes, a chemical reaction occurs when the finish is exposed to sunlight triggering a change in the alignment in the floget string. This is carefully splained in duh specksheet but can only be read when exposed to direct sunlight overnight.
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Glenn Jacobs WR Addict Offline JC L&S Posts: 2,077 North DFW, Texas Texas USA Gender:	Re: When To Stop Sanding? Reply #4 - Nov 11^th, 2022 at 12:26pm Glenn J.
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Simon Zimmerman WR Noob Offline WR Rocks! Posts: 2 Ulster Park New York USA Gender:	Re: When To Stop Sanding? Reply #5 - Mar 4^th, 2024 at 9:06pm I use 240grit. This is Camphor laurel finished to 240.
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Bill Neff

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Re: When To Stop Sanding?
Reply #6 - Mar 5^th, 2024 at 10:34am

When I started turning, someone told me turners sand beyond 220 because we aren't doing flatwork. The grain helps "hide" scratches since flatwork is sanded with the grain. Lathe has the wood going cross grain, side grain, every which way grain, you need to sand to finer grits to help "hide" and remove scratches from being visible.

Some people are like slinkies... totally worthless but it puts a smile on your face when you push them down the stairs.

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Ken Sherwin WR Noob Offline WR Rocks! Posts: 11 lafayette Indiana USA	Re: When To Stop Sanding? Reply #7 - Mar 5^th, 2024 at 1:00pm If you do segmented turning, all the grain runs around the circumference again so just switch to segmenting then sanding is easy. Of course you'll spend 5 times as much time cutting and gluing.
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