when u cut the steam pipe on a angle cut the side of the steam pipe (wall) cuting str8 down the steam pipe at a sharpe angle is very hard
the gap between will be filled up with weld
once u have all ur runers cut and tacked all together u will need to remove the runers of the flange which means grinding of the tacks which hold them to the flange plate then weld each runner one by one, the reason why u cant weld every thing together on the jig is because u just dont have enough room to get the tig in there so u weld each runner together on there own and then once they are all done join them all together on the jig
raw materials
cylinder head flange = $40
turbo flange = $20
steam pipe bends = $4 each
thats wat most poeple pay retail