OficineRobotica has good content in particular showing what can be done with the “Realthunder” branch which has lots of stuff that hasn’t made it to the official release. Between Joko Engineering, Flowwie, and MangoJellySolutions there are a lot of learning opportunities. Lately, there have been enough good videos for new users that it’s becoming a lot more accessible. But a few years ago, my then-middle-school child watched a few videos and was able to use it, and even look over my shoulder and help me out with a few things, including pointing out when I needed to use a datum plane. It seemed inscrutable when I first tried it, in January 2016. Just two different representations of a shape.įusion isn’t available for Linux, either for pay or gratis.įreeCAD has been growing by leaps and bounds the past few years. A STEP file here wouldn’t be meaningfully different from the. That doesn’t give you any ability to adjust parameters to change a design. If you would like larger teeth (and, naturally the resulting size), change the base property module from 2mm to 3mm for both the Ring and the Gear and regenerate all the rings and gears you wish to use.Īll the files, both the ten OBJ files and the two FCStd files, are available at GitLab: GitLab Michael K Johnson / HypotrochoidGraph (If you want a Gear with fewer than 15 teeth, you might need to edit the Drawing Holes Pocket sketch and delete (or change to construction geometry) some holes that collide.)

In FreeCAD, select the gray InvoluteGear in the Gear, or the gray InternalInvoluteGear in the Ring, and then change the base property teeth to the number of teeth you want. You will need the FCGear Workbench installed to make modifications. If you want to make other size rings and gears, the FCStd files were created with FreeCAD 0.20.1 and the FCGear workbench. The racetrack on the ring is to assist gripping the ring solidly to hold it in place during use. The upper tips of the gears are chamfered to keep them from catching on the flange. The flange helps hold the teeth of the gears down so they don’t jump out. To use, flip the rings over, so that the flange is above the teeth. Choose slicer settings for high quality artifacts from roughness on the teeth will make the set work poorly and/or be visible in the drawings. This is good because the print takes 3 hours and I’m going to be making six sets this weekend.

Freecad slicer