PILMAN
Member
I'm just wondering if it's possible to crack a milled receiver by accidently hitting it with a steel punch or a hammer say if someone misses the retaining pin?
Seems to me if the metal was soft enough to get dinged, it wasn't hard enough to crack from a punch blow. Maybe by expansion from trying to drive a tapered pin out the wrong way, but not from just a zot from a punch or a hammer.
Yes?
No?
Challenge me.
One thing you can do is spread some light oil over the area, wipe it off, and wait to see if any oil from any crack bleeds out again and darkens the blueing around a possible crack over a period of time... ten-twelve hours, more or less. Analogous to the lighter fluid method, but a little more reliable since the oil doesn't evaporate like lighter fluid.
Terry, 230RN