Evap base thickness?

[Bundles]

I've been building my own evap, which for a first attempt, I think is coming along nicely

Anyway, there is a few things i am stuck on, main one is the base.

I have 2 sheets of copper plate, one is 3mm thick, and one is 5mm thich, I want the base to have pins sticking up from it, and was planning in drilling into the base a little, and making the pins an interference fit into the holes, but i wouls struggle (a lot) to drill into, and lap, a 3mm base.

So in an ideal world, which would be better, a 3mm thick base, or a 5mm thick base? The 5mm would be a heck of a lot easier for me, but how easy it is comes second to performance tbh

I would have soldered the pins to the base, but think they will just fall off when it comes to brazing the block shut.

Any help is much appreciated

[redleader]

Honestly i'd do whatever is easiest. I mean if you're already going to be running ~50C below ambient, do you really care if its -51C verses -50C?

My priority is just building something that can return oil to the compressor and doesn't leak

[Bundles]

Nice one, cheers mate

I ended up deciding on a 5mm thick base with holes drilled 2mm into it, then getting 1mm machined off the face of it after it was brased (because it will warp during the brasing process), leaving me with a 4mm thick base with cascade style holes (pits?) allowing the freon to get to within 2mm of the heat source.

Should be good ( i hope)