Mini Stewart Platform (6dof Motion Platform) by SF3DPrint

Last crawled date: 3 years ago

I drew this up and printed it to be able to experiment with 6 DOF platform control.
The servo mounts fit Futaba S3003 and compatible servos. The bolt holes in the base to hold the petals together fit M3x8 screws. The bolts that hold the Traxxas links to the upper frame and also hold the upper frame together are M3x20, and the bolts that hold the Traxxas links to the servo arms are M3x12.
You'll need support to hold the shelf overhang where the base pieces bolt together during printing. Same for the top pieces. The top pieces are a bit more sensitive to good cleanup of support material to get good alignment of the parts.
The pieces are drawn to fit in a 4x5x5" print volume when printing so pretty much any printer should be able to print it.
You just print three base pieces and three top pieces, and bolt them together to get a respectable-sized platform. The links I'm using are Traxxas 3645 Turnbuckles / Toe Links, 61 mm (pair) (http://a.co/0WOcN2x). They fit an M3 bolt just about perfectly.
The Traxxas links are 2 for $10 so $30 total. The servos are $11 each at Tower Hobbies.
I’m really impressed by the Traxxas links. They swivel totally freely but have virtually no slop. I need to get this wired up now but can already tell it’s going to be precise as all heck.
I added two versions of center plate - one that's just blank and another one with a pedestal for a 65% scale version of https://www.thingiverse.com/thing:1341481. The pedestal version is shown in the photos.