What about Chem-milling to remove the burrs?
Quote from: OTmachine on October 09, 2022, 06:45:08 PMWhat about Chem-milling to remove the burrs?I’ve considered something like this. I need to study on what kind of mask and etchant would be effective. I thought of only using it for removing the burr after machining the port. Dave
A ball end carbide bit with diameter just less than the hole. Insert through the hole. A delicate maneuver.
My plan was to fill the last three or four inches with cerrosafe / cerrometal to minimize burrs. After drilling the ports simply hold the barrel in 200° oil to melt the cerrometal.
I want to do it to relieve some of the pressure at the projectile base so it doesn’t interfere with the bullet upon exit. Dave