GrabCAD
corner20
## Summary
► Design For: Corner mounting bracket for 2020 extrusion.
► Created by David Malawey, 2026.06
► use M6 x 12mm fastener * 2
► compatible with most 20mm extrusion manufacturers
► 3d printable design (recommended ABS 30% infill)
## Description:
This corner bracket mounts aluminum extrusions of 20mm or 2020 at 90 degrees. The design is open source, installs with two M6 fasteners, and requires the extrusions to be tapped with M6 threads. This part is printable with no supports, has less strength than common cast aluminum corner brackets, but it is designed for improved aesthetics. If strength is desired, you can include aluminum brackets at the interior corner with this bracket at the exterior corner of a joint.
All my models are free and open source. Explore the feature tree to examine how it is designed and easily make changes to suit your needs. Visit https://qr.net/openlabproject for more design resources!
Direct link to the original creator's page
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Frequently Asked Questions
Where is corner20 published?
This model is published by its creator on GrabCAD. STLFinder only indexes it: the "View on GrabCAD" button above opens the original page, where the creator shares the RENDERING, SOLIDWORKS, STEP / IGES, STL, TEXT FILE files under their own license.
What 3D printer can I use for this model?
This model is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Is this 3D model free?
Yes, the creator shares it at no cost on GrabCAD. Some creators accept tips or donations.
Can I modify this file?
Check the license (see original page) on the original GrabCAD page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.