johnho
05-18-2007, 09:39 PM
Following suggestions I beagle my 4 cavity 40 cal pistol mold i got some shim stock from work-2 and 3/1000. Did a search on the site to find out how. Found several threads and some from Veral Smith. Veral recommended using JB weld over the silicone copper.
Tried JB weld. The larger piece i placed on the bottom of the block has held well so far. the smaller ones on the edges of the top of the blocks and the one between the middle cavities would never stay on. Tried bending a larger shim around the edge of the block for better holding. Held better until mold got hotter and then they fell off too. The JB Weld had softened up.
am going to try the silicone copper next but what I did get out of the casting time until the shims fell off were great. No flashing and good fill out. I do think some of the bullets were not as concentric however but think that will correct itself when I can get the shims to stick better.
Any comments or suggestions would be appreciated. I know, I think i know, it's just a matter of properly positioning and sticking the shims securely.
John
Tried JB weld. The larger piece i placed on the bottom of the block has held well so far. the smaller ones on the edges of the top of the blocks and the one between the middle cavities would never stay on. Tried bending a larger shim around the edge of the block for better holding. Held better until mold got hotter and then they fell off too. The JB Weld had softened up.
am going to try the silicone copper next but what I did get out of the casting time until the shims fell off were great. No flashing and good fill out. I do think some of the bullets were not as concentric however but think that will correct itself when I can get the shims to stick better.
Any comments or suggestions would be appreciated. I know, I think i know, it's just a matter of properly positioning and sticking the shims securely.
John