I already have been using garMo's Solder Stand at my workbench for a while now, but I wanted to modularize my soldering setup with Gridfinity. I couldn't find any other solder stand I liked so I remixed garMo's design onto a 2x2 Gridfinity blank in Blender. I had to shorten the distance from the solder spool to the solder guide to make it fit within the 2x2 layout but it works great. You will need to download the rod model from garMo's original thing:

https://www.thingiverse.com/thing:569589/files