Alternative method of creating the Gyrosphere Tutorial for High School Students and below

jack_aiello

I ran into a problem using the tutorial provided by OnShape for the Gyrosphere.  In particular, the Shell tool didn't seem to work on a sphere. As a workaround, I created a half-sphere and Shelled it. I then Mirrored the hollow hemisphere and continued the tutorial from that point on.  I have found several other tools that don't seem to work as advertised and don't know if it is because of my lack of experience since I am new to Onshape, or a software glitch with Onshape. I have attached a complete tutorial to this document should anyone else want to use it.  I am interested in working with any other teachers working with Onshape since we will be on distance learning in the Fall.  Most of my students do not have a computer powerful enough to run other CAD programs.

bruce_williams

@jack_aiello

First you are to be commended for finding and using a tool that works for the extra-ordinary circumstances we are in.

Then - the Shell feature should work, in fact I tried different methods and can not get it to fail.  Could you share the URL of a document in failed state?

See these instructions: https://forum.onshape.com/discussion/9107/forum-post-checklist-read-this-first#latest

jack_aiello

Hi Bruce,
Thanks for offering to help.
Below is the link to the document I was working on. The Sphere was made from putting fillets on to a cylinder, but it would not shell.  I used the 4.00-inch thickness as per the tutorial.
https://cad.onshape.com/documents/90f8b0dae5400b0dbf3b8485/w/453e1bd9aea751b0fc8123f2/e/1c6dd74ed1cd75f488c1a6ca

Sincerely,

Jack

NeilCooke

It's a little bit crazy to add fillets to a cylinder to create a sphere - revolving a semi-circle would be quicker and more robust - however, you need to select the Hollow option in the Shell feature dialog.

jack_aiello

Hi Neil,
Thank you for the comment. Yes, my way of approaching a sphere is from revolving a half-circle. I don't know why but I must have overlooked the HOLLOW option in the SHELL feature.   Coming from a different CAD system (Autodesk Inventor) I am left wondering why a SHELL feature would need a HOLLOW checkbox? But in any event, learning can happen when we make mistakes and improve upon them.

Jack

NeilCooke

I just took a look at a couple of Inventor videos and they all require face selection? Hollow just lets you shell it without removing a face.

jason_dixon

Where do I find the Gyrosphere Tutorial?

Domenico_D

@jason_dixon
Here! https://cad.onshape.com/documents/0a4fc9d3dc2356bcd0b9d0ab/w/16bd56e0983e873c298e17eb/e/0b1d160b529c467d2b588bcd

Just make a copy and follow the instructions!

quinn_renehan

@Domenico_D
Cool thanks! I like this format with the tutorial inside the document.

When I find the exercise via google I see this url ( https://www.onshape.com/academic/curriculum-resources/gyrosphere-modeling-final.html ), which leads me to believe this is an offering created by Onshape.

Do you know if there are more of these curriculum resources? And/or whether they are compiled in a certain place?

Domenico_D

@quinn_renehan Yep this was created by the PTC education team.

There are two more!

Eyeglass Editing

Molecule Assembly