Regen problem

chris_butcher076

I'm interested in 3D printing model cars of 1930's vintage, Starting from the ground up I have modelled a wire wheel (1937 Jaguar SS100); 80% through I got a warning re regen times, don't know how I overcame that but now the wheel rim is not displaying as round. I know from my AutoCAD days (22 years ago now) there was a way of changing the configuration to improve performance during design, then reverting back for printing etc.

https://cad.onshape.com/documents/07f228ed8e442b3efa77db18/w/6019d4b87aea21ad1b4f5592/e/59e4c899156211116a0ff631

Thanks for any help

Love CADemist tutorials

Jed_Yeiser

If you look at your regen times, I'm seeing some HUGE pattern features (24 sec, 15 sec) for circular patterns. You're modeling some fairly involved geometry in a single part studio. My recommendation would be to break this design into multiple part studios, version, and then derive the versioned geometry into a single part studio. In other words, create a part studio for the Tire (which is taking more than 24s to regenerate), a second part studio for the rim, etc. This should really help regen times. It's worth noting that you can select 'View in high quality' from the view menu on the right, and this fixes the tessellated view issues.

For what it's worth, one of my first OS models had some similar issues. Once you get used to using Derive in your workflows, it can make a massive difference - not only from a regen standpoint, but also from a design and workflow clarity standpoint. I'm not sure if you've come across Greg Brown's YouTube channel, but most of his videos (especially this one as well as this) really helped me understand how to break my models down a bit more and leverage the power of Derives.

NeilCooke

Coincidentally, a tyre is used as my example in this https://www.onshape.com/en/resource-center/tech-tips/tech-tip-how-to-create-faster-patterns-in-onshape

chris_butcher076

Thanks for help - it answered my question, do remember turning high quality view off when the performance lagged but I couldn't remember where.

I'll try following the derived alternative on another wheel.

Jed_Yeiser

If you look at your regen times, I'm seeing some HUGE pattern features (24 sec, 15 sec) for circular patterns. You're modeling some fairly involved geometry in a single part studio. My recommendation would be to break this design into multiple part studios, version, and then derive the versioned geometry into a single part studio. In other words, create a part studio for the Tire (which is taking more than 24s to regenerate), a second part studio for the rim, etc. This should really help regen times. It's worth noting that you can select 'View in high quality' from the view menu on the right, and this fixes the tessellated view issues.

For what it's worth, one of my first OS models had some similar issues. Once you get used to using Derive in your workflows, it can make a massive difference - not only from a regen standpoint, but also from a design and workflow clarity standpoint. I'm not sure if you've come across Greg Brown's YouTube channel, but most of his videos (especially this one as well as this) really helped me understand how to break my models down a bit more and leverage the power of Derives.

NeilCooke

Coincidentally, a tyre is used as my example in this https://www.onshape.com/en/resource-center/tech-tips/tech-tip-how-to-create-faster-patterns-in-onshape

chris_butcher076

Thanks for help - it answered my question, do remember turning high quality view off when the performance lagged but I couldn't remember where.

I'll try following the derived alternative on another wheel.