Note: Several of my designs for my CNC plasma rig are available here for free, and several others are exclusively for my supporters on Patreon that support for any amount, even if only a dollar a month. https://www.patreon.com/design8studio
For when using 1.5" Square Tube (1/8" wall) in projects such as the LowRider v3 CNC, this end cap protects against snags and scrapes (v1.0). Prints with no supports. PLA. Can be scaled a bit as needed in your slicer to get a tight fit. Mine fits tight just as it is. Also, a bit of painters tape around the stub can help tighten a loose fit. Enjoy!
PS: photos show some of my build progress on a CNC plasma cutting table based on LowRider v3 platform.
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Various LowRider 3 CNC remixes:
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The author marked this model as their own original creation.