a friend brought 2 brass cups to me last night from an antique milk shake mixer. these cups are what the glass parts set in and you crank a handle to agitate the milkshakes. at any rate the sheetmetal brass cups are cracked sevierly and someone has tried to solder one back already. so he asked me if I could machine something and I said yes I could but would be expensive in brass and a huge amount of wasted stock. I know that I cannot silver braze these back because my skills are not good enough on silver soldering. so he asked if I could find a company or someone who does this type of repair and get a quote. I really don't know who to ask so I'm asking here if anyone knows of a company or person I could get a quote for him to repair these.