Hello guys, I'm sorry to bring a old thread back, but I have some info that can contribute to the discussion. If I post something wrong or simply stupid, feel free to correct it or even delete the post.
First of all, I'm impressed with the amount of content in this forum!!! The best, IMHO!!!
I'm nowhere near in knowledge concerning K98k collection in comparation with the pros here, but my father is a experienced machinist (45+ years), same with my brother, who worked 10 years as a EDM machine operator(called here in Brazil eletro-erosion), among other things.
First point: jack944, in post #19, mentioned metal build up. IMHO, this is the case with the bolt. Look at the marks around the 4, and 3. Also, at the bottom of the pic the "slope" where the handle jois the bolt body are way different.
View attachment 24333View attachment 24334
Second point: George R., in post #23, talked about the use of EDM for the engravings. IMO, this is not possible. Firstly, because EDM "burns" the metal around, altering the color of the finish, if not removing it. This would require touch-ups that would be "spottable" a mile away, IMO. And secondly, it would be impossible to fake curved surfaces well, like receivers. The EDM electrode can not compensate for curvature, being it applied "flat" to the surface, leaving a uneven depth, unlike the "stamped" original, where the receiver is "rolled" to leave a even depth.
I hope my points make sense. I reposted the pics of the bolt in page 1 for reader's comodity.
Michael