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hung load said:
I'd like to experiment with homemade patches. I'm going to go the pillow ticking and crico route. I understand that for a .54 it is advised to use patches in the range of .015 to .020 thickness. Are these measurements standard for pillow ticking? Will they be written on the package? Will I need to convert a measurement somehow?
(1) You really do need a micrometer for measurment. You can buy them for very little at places like Harbor Freight or Sears. Why a micrometer? You can get a better "feel" for the thickness. You will get used to applying the same amount of pressure each measurment using just your finger tips. This is important: Take
two measurments and write them down, then attach a tag with the measurments to the cloth that you end up buying. The two measurments are the "light measurment" when the micrometer has first made firm contact with the cloth. The second is the "crushed" measurment that is taken when the micrometer is cranked down fairly tight on the cloth. Why do this? It makes sense that the crushed measurment is going to give you a closer estimate of how thick the cloth is in actual use.
Another tip: When you wash the cloth in a washing machine, the edges usually fray and you end up with a lot of strings and threads in your tub that used to be woven cloth. So, either sew a hem, or zig zag stitch around the edges of the cloth OR get a bottle of waterproof wood glue like Elmers and run a bead around the edges of the cloth. Now you can wash and rinse the cloth as much as you care to and it won't fall apart in the washer.
For a fairly tight fitting ball, say .05 under bore, Wal-Marts' Ticking works pretty well. Don't assume that all the ticking will be the same size. If you need to take up more room tween the ball n barrel, you can use unbleached denim or drill cloth. Again, measure and record the crushed thickness. When you find something that works, you'll want to be able to duplicate the results.
One other thing: make sure you use only 100% cotton, unless you like the idea of cleaning melted plastic from your barrel.