socket rail inserts
thingiverse
socket rail inserts if they dont fit your rails then adjust the size or remix the stl in tinkercad adjust the infill to your liking if you got big sockets just go up to 7 0%
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With this file you will be able to print socket rail inserts with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on socket rail inserts.