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Sets like this one https://www.amazon.com/dp/B092D4CV56 https://www.amazon.com/dp/B092D4CV56 are also sold in U.S. hardware stores https://www.harborfreight.

by avhon1 2y ago

Sets like this one https://www.amazon.com/dp/B092D4CV56 https://www.amazon.com/dp/B092D4CV56 are also sold in U.S. hardware stores https://www.harborfreight.com/needle-file-set-10-piece-69876.html https://www.harborfreight.com/needle-file-set-10-piece-69876... https://www.menards.com/main/tools/hand-tools/files/tool-shop-reg-diamond-file-set-5-piece/ts-dg-5fs/p-1642874299975480-c-1550852385008.htm https://www.menards.com/main/tools/hand-tools/files/tool-sho... They are very cheaply made, but as far as I can tell are actually diamond. They're good for shaping glass and ceramics. For metal, you're better off using hardened steel files, but these ones will work, just slowly and with less precision.

godelski 2y ago
I actually have that exact set. Yeah, they aren't high quality, but as far as I can tell they are diamond. They have that hardness and the filing is omnidirectional as one would expect. Of course you can get much better sets that will last longer and are much more expensive. But I remember as a kid that trying to buy a diamond bit was quite expensive but most Dremel kits come with one and a wheel now