Polish Blank Question
Recently ordered a couple of Polish Blanks for an AK build.
Both were heavily Belt Sanded on all the flat surfaces and the ends were visibly curved as the part was obviously not applied or removed from the Belt Sander evenly.
Measured random parts and some spots were as low as .024".
I for one would not use a Belt Sander on sheet metal. In particular on Firearm components and especially on thin Sheet Steel.
Has anyone else who bought these Blank receivers had Belt Sanded ones ?
The ones I got from Curtis, at AK Builder were perfectly clean, unsanded and pristine, as is typical of his stuff, but he ran out of stock at one point, so I ordered a couple elsewhere.
Advice/opinion please . Go ahead and Heat treat or return ? , or get a refund. Safety is paramount.
why would you dismiss the belt sanded ones? What is your concern? What is the issue w/ safety?
There are a couple of threads regarding the different polish blanks out there. We came up with at least 3 different versions being sold right now. The one with the sanded surface was deemed least desirable. They are apparently made from a different grade of steel than the others and there have been some heat treating issues with them.
Stick with the ones from AK-builder or Copes.
Thank 7.62X39 for heads up. I'll return them .
sovblocgunfan: I have concern with dimensionally challenged Steel, it's prone to failure.
I DONT THINK COPES HAS ANY LEFT??????
Member here Dark Knight sells some blanks that are hardened.
Parts For Sale
Right! I remember those threads pretty well. I only ask because I got mine from Curtis, and it was one of the ones that looked sanded and had chicken feet. It seems like a really nice one.
Originally Posted by 7.62x39
Order some earlier today from Dark Knight.