These are much darker than the filters used for most kinds of welding,” NASA wrote in an eclipse guide published ahead of the 2017 total solar eclipse. “If you have an old welder’s helmet ...
A PTFE liner is inexpensive and will work fine with the aluminum wire. If you want to do normal welding later, you’ll need to put the original liner back in. The other thing you’ll need is ...
If you’re printing with ABS, the general wisdom is that solvent welding with acetone is the best bet. You put some acetone on the printed parts, rub them together, and the plastic fuses together.