welding day

jc motorsport sent me some aluminum pieces to weld.
the tube for blow off valve and a F20 manifold designed by him.

the manifold has some design mistakes.  need more working angle for the tig. the oem manifold piece is

3mm thick and the new flange is 12mm. i need a lot of amperage to work with de 12mm piece but not that much for the 3mm side.  best solution is to cut the 12mm sheet to 3-4mm. i think this is enough thick for a custom aluminum manifold.  waiting for customer decision.