Here are the metal parts for the boom system
The actual A frame is brass rod that comes in the kit is pre soldered. The rest of the parts are cast white metal to be glued in place.


I have experience with soldering white metal to brass at low temps so I decided to solder some of the parts, the X brace in the middle has to be cut to fit and its ends filed with a round file tapered to fit. Then I soldered it in place.



I then tinned the boom end and soldered the funny bracket on the boom. Unfortuneately my toddler came into the garage while I was doing this and I lost focus worried about him next to me with torches and soldering irons out and I slightly melted the pointed end of the bracket, mostly the strap brace over the top of it. I could leave it and call it bent damage but I think I will cut that piece off and solder a piece of brass strip stock in place to repair it.



Next is the triangle gussets that go in the boom corners, but I might make them out of brass instead of the supplied white metal and silver solder them in place.