Just tossing this out there for thought... HDPE. I was going to get a couple of sheets of this, one 1/4" and the other 1/2" for making jigs and fixtures. A local farm store (Orscheln) carried it but they badly managed themselves out of business. The chain is still in business in other locations. I don't know if they still sell it or not, I need to find out. I also never tried checking to see if the thickness was exact. I'm posting a link to a page with information and prices but I noticed that these prices are almost double what the farm store was selling them for when I was looking at it.
Farmers use a good bit of this stuff for sliding surfaces because mud etc. does not stick to it. Water will never affect it. It is also used in food processing areas. I had (still have) a small piece about a foot square and about 9/16" thick that I used for probably 16 years in the shoe repair shop as a self healing cutting surface when using an Exacto-knife. https://www.usplastic.com/catalog/item. ... emid=23869
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farmer
Francis Robinson
I did not equip with Shopsmiths in spite of the setups but because of them.
1 1988 - Mark V 510 (bought new), 4 Poly vee 1 1/8th HP Mark V's, Mark VII, 1 Mark V Mini, 1 Frankensmith, 1 10-ER, 1 Mark V Push-me-Pull-me Drillpress, SS bandsaw, belt sander, jointer, jigsaw, shaper attach, mortising attach, TS-3650 Rigid tablesaw, RAS, 6" long bed jointer, Foley/Belsaw Planer/molder/ripsaw, 1" sander, oscillating spindle/belt sander, Scroll saw, Woodmizer sawmill
The chain is still in business in other locations. I don't know if they still sell it or not, I need to find out. I also never tried checking to see if the thickness was exact. I'm posting a link to a page with information and prices but I noticed that these prices are almost double what the farm store was selling them for when I was looking at it.