Klarinet Archive - Posting 001176.txt from 1999/05

From: Jim Lande & Joyce Mason <lande@-----.com>
Subj: [kl] Re: klarinet Digest 26 May 1999 17:25:03 -0000 Issue 1431
Date: Wed, 26 May 1999 17:46:54 -0400

>From: "Mark Weinstein" <cpaok@-----.net>
>Query for the Sand paper experts out there. Is 220 the FINEST ? When I went
>to Wal-mart recently all I could find was 180.

YES! finer grits are easily available to 600. (roughly comparable to coarse steel wool) and is made up to something like 3500 (used, for example, to polish plexiglass airplane windows.) The best general purpose papers (80 grit up to 600) I have found are belt types (4"wide by however long you want it) made in Switzerland, identified as "SIATUR JJ" and SIA, and carried by woodcarving supply places. (I have dealt with Little Mountain carving supplies at 800-752-7573.) 800 to 1200 papers can be bought at any place that sells auto paint & related supplies. Some places (Woodcraft Supplies)
also carry fiber pads that are roughly comparable.

A fun exercise is to take a small hardwood board (say, 2" by 2" by 2 feet of oak) and sand completely with 80 grit. Cut off a few inches and then sand what is left with 120 grit. Repeat up to 600 grit. The 80 grit sample will seem smooth, but you will be able to see a difference all the way up. At 600 grit the color of the wood will appear to change, as if you had oiled the wood. (Oiling the wood, so some degree, changes the color by making a smoother, more continuous surface.)

Play with grit
jim

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