4040 extrusion profile solid with 10mm hole and connectors

I made these for people who want to experiment with 3d printed extrusions....
I included 10mm, 20mm, 30mm, 40mm, 50mm, 10mm with connectors.
50mm, 100mm, 200mm, 400mm without....

Please leave feedback if there are problems.
If you create a printer or anything else with them, please share it with me.

You can get more help or info in our facebook group.
https://www.facebook.com/groups/1843740479205162/