How thick is that base, looks like you might have an issue with mass load to heat trasnfer there! Also what path is the ref going inside the evap? Does look good dude. Please say your going to purge it with nitrogen when brazing it up!
Base is about 7mm thick iirc. Path is from bottom to top. Last one went top to bottom and quite frankly, sucked. So I'm trying the other way. And if this way sucks even more I'll just build another. Although a maze was my next in line to try :-/.