What printer are you using?

I love the utility of mine(Airwolf3D Prusa variant), but FDM has serious limitations and takes forever. But still it enables a ridiculous amount of DIY prototype designs when you can work around the limitations.
Working around in my case mostly means printing in parts and then using acetone surface prep and ABS/acetone goo glue to then fuse the parts into a complete assembly. I have a guy I have worked with though who uses 3D printed parts, plaster, and low temp melting metal to make injection molds and then for some applications even one off parts are at full strength.