The goal is to turn this pile of scrap into a semi Auto MG34. The parts are from 3 different receivers. There is overlap on some of the parts, these will be cut and milled square for welding. The extra sections will be used as fillers where there is a big gap between sections. The gaps are to big to just fill in with weld, since the receiver is a precision machined part shrinkage and warping will be to great.
Strength is not to much of an issue as the bolt locks up into the barrel, however it needs to be straight and precise as all the parts fit closely. The receiver seems to be made from ductile Iron. I have done some welding tests on scrap pieces and found a mild stainless alloy rod works well. Using a post black will hide the welds.
The first step is to make a jig to hold the parts securely and in perfect alignment. The top plate of the jig will set the inside length of the receiver from front to back.
Questions and comments can be posted here.