Parametric spider axis coupler in OpenJsCad

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Published on April 5, 2012

Description

Here's a spider coupler for coupling two axes. Includes a cutout for a nut and a screw for attachment.

It's fully parametric, 16 parameters can be edited straight in your web browser.

Instructions

Try the online version at:
joostn.github.com/OpenJsCad/couplerdemo.html

Or download the .jscad file and use the OpenJsCad parser:
joostn.github.com/OpenJsCad/processfile.html

A recent Chrome or Firefox is required (for WebGL support).

For each side of the coupler the axis diameter, inner depth and outer size can be configured, as well as the size of the tightening srew and nut. The 'spider tolerance' parameter slightly reduces the spider size, allowing the thing to absorb some wobble.

OpenJsCad is a javascript and browser based solid 3D CAD tool. For more information see:
joostn.github.com/OpenJsCad/
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This coupler looks awesome and I'm looking forwards to using OpenJSCAD in the future.

Unfortunately, when I tried to print this model, Slic3r complained that the part was not a manifold and had overlapping/intersecting faces and the output tool path was complete garbage. Possible bug in OpenJSCAD's exporter?

Probably the problem is due to the fact that these tools expect a 2-manifold mesh. This is now exported by the STL exorter of OpenJsCad, so the problem should be fixed.

I fixed something about 2 weeks ago, did you generate the STL recently?

I don't use slic3r; does the file open in Meshlab?

It looks like you are printing them top-down. Wouldn't it be easyer to print them bottom-up?

Did that on purpose: this way the support material is easily removable. Printing them the other way round would fill the holes with support material.

That's fantastic, thanks for making me discover OpenJsCad :)

You're welcome :)

Here are my other OpenJsCad designs:

http://www.thingiverse.com/joo...