Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.
First time visiting? Here are some places to start:- Looking for a certain topic? Check out the categories filter or use Search (upper right).
- Need support? Ask a question to our Community Support category.
- Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
- Be respectful, on topic and if you see a problem, Flag it.
If you would like to contact our Community Manager personally, feel free to send a private message or an email.
Question about a spiral fidget
tim_schubach
Member Posts: 5 ✭
I've been playing with the idea of introducing a spiral fidget toy into my 3D printing curriculum, but thought I should probably figure out what kinds of things my students might want to model. I've had great success using hexagon and hourglass shapes, but I wanted to try something different. So, I traced a chess pawn and followed the same steps. But for some reason, the two pieces don't want to slide together all the way down. I insert the outer piece into the inner piece from the bottom and they go together just fine until that last 3/8". The assembly does not show any interference.
A link to my model is included here ( https://cad.onshape.com/documents/59096fe74b866ad2cdc5a2d5/w/3e1836307df9295626bd7edd/e/54188cf0a10ccd8be75b6830?renderMode=0&uiState=67fea5ccfde2130a24d8cfc2 ) - I'm hoping someone can tell me where I took a wrong turn.
Thanks,
Tim
Answers
Stay in your one main part studio this way it's a multi part studio, then Transform copy the main revolved part. At the end of the tree, use Boolean subtract and subtract the main part from the copied part. Ensure you use an offset in the boolean settings so that the parts have a loose tolerance.
Learn more about the Gospel of Christ ( Here )
CADSharp - We make custom features and integrated Onshape apps! Learn How to FeatureScript Here 🔴
+1 to Michael's technique. I made this fidget cone thingy that basically does that: https://cad.onshape.com/documents/631e99f6640ba9bc74ec80f1/v/d0eaafad835f2cc5a47fce08/e/44a17cf49805a6768f325fe1
In my experience, a 0.4mm clearance is good for FDM-printed parts, though that may vary between printers. Even with that, you may still see badness if you haven't tuned your seam settings and part cooling and elephant's foot compensation and probably other parameters. I've vetted that fidget cone design pretty well, so you can try to print it and see if comes out okay on your machine.
Separately, I recommend redrawing and greatly simplifying the source sketch. You could get away with a handful of arcs and line segments. That would also make it easier to think about the design.