3D printed .38 special
Posted: Fri Jan 15, 2016 3:03 pm
http://weaponsman.com/?p=28671
At the end of life, the cylinder is expected to fail between layers at the front edge of the fired casing. If it behaves anything like the Washbear, then gas will vent harmlessly from the crack and the cylinder will bind. The vented gas is expected to be no greater than the gas that escapes between the cylinder and barrel of a traditional revolver.
While the .38 Special has a lower chamber pressure than the .22LR, it does produce a greater recoil. To compensate for this, I modified the front of the grip so it mates more securely with the frame. I replaced the main fillets with chamfers, which are easier to print. I also increased the space available for the trigger band so that a heavier elastic band can be used. More importantly, I redesigned the striker assembly: