By the way, my primary use of the butane iron is hot air for heat shrink away from power.

Yes it works great for that too.... comes with an attachment for it specifically.

I am impressed with jlcpcb - very good quality.

 

I printed a few SMD enclosures. The dovetails are a little tight but this might work. The lids use a pin made from a paper clip and the clear lens is from a cd case.