2028 Aluminum Extrusion Joint for 3D Printed Workshop Tools

Design preview. Rendered from the file, not a photo.

The maker says it fits: 2020 T-slot aluminium extrusion. See the proof

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What it does

Connects two 2020 T-slot extrusions at right angles, so you build sturdy frames fast
Reinforced load areas hold heavy parts steady, preventing wobble during assembly
Designed for plastic strength, so it works just like metal joints at lower cost
Perfect for workshop rigs, machine frames, and custom tool stands you build yourself

You get rock-solid joints that hold your workshop builds together. This 2028 extrusion joint locks two 2020 T-slot pieces perpendicular to each other, so your frame stays square and stable.

The design puts extra material where stress hits hardest. You get the same joint shape as aluminum or iron versions, but made tough for 3D printing. The thickened sections keep your build from flexing when you load it up.

Use this for workbench frames, machine bases, or custom tool holders. Snap it into T-slots, tighten the bolts, and you have a joint that takes real weight without bending.

1.2k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: 2020 T-slot aluminium extrusion

That is the maker's word, not a fit we measured. Check the size below against your own.

2020 T-slot aluminium extrusion (model 2020)From the maker's own listing notes, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PETG. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.