Tetrahedron Gantry Concept

by coelestinian, published

Tetrahedron Gantry Concept by coelestinian Oct 31, 2012


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This is just an idea. I don't know how feasible it is, or whether it's worth building or calibrating. In fact, I don't know almost anything about it...

It's a somewhat different 3D gantry design based around a tetrahedron. There are three axes, belt-driven or what-have-you, and each is connected by a sarrus linkage to the end platform.

I like it because it's extremely stable (tetrahedron) and every axis is exactly the same.

However, (1) it needs complex maths, (2) there's a large footprint, and (3) nobody's actually tried it.

Any thoughts?


1) Make it more of a tetrahedron instead of a right-angled pyramid thing.

2) Design actual files.

3) Print and assemble.

4) Be astonished (hopefully) at amazing stability and resolution!

(As for the OpenSCAD file, open and animate it at around 20 FPS, 180 steps)

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You're right; it kind of is like the Rostock. There is a smaller printing area (it would get larger as you lessened the angle between the axes - right now it's 90 - Rostock is at some infinite zero angle), but, because of the shape, it would hopefully be more stable.

as I see it is Rostock converted to tetrahedron. And the higher head the smaller printing area