Dura-Block the hand sand block caught on very quickly when it came out about 2 years ago.
It's no wonder they are affordable and if you have spent any time hand sanding you have thought there ought to be something like this. Dura-Block is made from EVA Rubber. The Ruey Lung Rubber Co tells us that: EVA Rubber is durable plastic foam material made of EVA (Ethylene Vinyl Acetate) resin.
There is actually no rubber in the EVA foam material. The word rubber was misused for the similarity of some characteristics of EVA foam and rubber foam materials.
The foam is fairly rigid (the technical spec is 20 PCF). It does have some give to it and will conform to say the curve of a roof. The blocks take stickit long board paper.
There are three new sizes 10 7/8" teardrop shape and two new long blocks.One of the blocks is 24 inches and the other is 30 inches. Tne best web link I could find is Trade Associates Inc. If any one has a better web site please let me know.
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