M3 nut to T-slot nut adapter
thingiverse
This adapter is designed for use with a 2020 aluminum profile featuring a 5mm gap. It's modeled after Motedis' T-nut, which includes a springball within its design. A picture of the product can be viewed online at http://www.motedis.se/shop/images/product_images/popup_images/99999572_0.jpg. I haven't yet printed this adapter, but it's planned for use in a future rebuild of my 3D printer.
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