bob2 posted:I am most likely repeating myself.
There are lots of investment casting businesses in the US. Even your dentist does it. Take a reasonably good set of sideframes and make a non-shrinking mold. Then make waxes and have new sideframes in lifetime brass.
Jay C is a participant on the 2-rail side, and is an expert in this area - all you need is a complete set of relatively undamaged sideframes and some postage - and a reasonable pile of $ for the work. Ask him nicely.
My concern is how big a pile of money is required, and what the part cost ends up being. If they're $200/ea, it's pointless to proceed.