This insert is sized to fit the Virtjoule heat-set insert soldering iron tips. I can't confirm if it will fit tips by others. As modeled, there is very little extra height available to fit anything longer than these. These tips are about 40mm long.

I see now why people say figuring new models out eats up a lot of filament. So if you'd like to buy me a cup of coffee or, more likely, contribute toward another roll of filament you can Paypal me here. Thank you!

This is based on the empty insert boxes by Willi 3D.