Worm Gear In SketchUp (3D Printable)
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There is some things that could be done better and more exact, but the gears were tested to roll quite well. Except if you are making a swiss clock. Where is the "face width fixed" SPgears plug-in download location (I fixed it as shown on Sketchucation Forum)? It's very late... more tomorrow.
So, again. These are non-enveloping gears. Perhaps it's not hard to make double throat/double globoid? The worm wheel I had to fix in NetFabb basic (free version), but it's very easy, shown at the end of the video. The worm itself is done quite fast and solid.
Make a better shaft for your needs if you want. I used just M5 bolt as an axle.I started calculations from: http://www.mechguru.com/worm_gear_basic.htm
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