Rectangular tube endcap
thingiverse
This is a rectangular take on this other customizer: http://www.thingiverse.com/thing:1654016 Press the 'CUSTOMIZE' button, launch the customizer app and start creating your own customized endcap in seconds ! You can also download the .scad script and use it standalone with OpenSCAD just in case the customizer is stuck
Download Model from thingiverse
With this file you will be able to print Rectangular tube endcap 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 Rectangular tube endcap.