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Surface offset, thicken and shell

Surface offset, thicken and shell

When offsetting or thickening surfaces by a value greater than the minimum radius of the surface, the feature just fails. It should display a warning and absorb the intersecting surface creating a sharp edge where the radius drops below zero. The automatic offset is a poor solution. For example, the simple revolve of a spline shown below and attached (Creo 2) fails if the thickness is increased so the radius drops below zero.


A thicken or offset feature that constantly fails when the parent surface is modified is extremely frustrating and significantly diminishes the value of many of the surfacing enhancements and features such as freestyle.


170310151134_1.jpg


Catia has been able to do this for years and even Autodesk Inventor can do it.


It might be a good idea to have equal wall thicknesses for many manufacturing processes, but surely that is up to the user? - They might add a round at the sharp edge to give a reasonably constant wall thickness, or perhaps add a boss feature or cutout where the problem is. With 3D printing capabilities meaning the thickness is less critical, this becomes even more of a software shortcoming.

7 Comments
Tmetcalf
Emeritus

Moving to Creo.

Tmetcalf
Emeritus

PS Sam Worthington‌ et all,

The PTC Community Help Group is for questions about Jive features and reporting issues with PTC Community.

To give your product related question, issue, or idea the most exposure, please post it within that product's community.

Please keep the input coming.

Best,

Toby

esallingboe-2
11-Garnet

Hello

It's certainly a good idea, for sure

Until PTC comes up with a solution, which can take a long time, there are some alternative solutions in Creo

You can use a surface offset with the option "Automatic fit"

07-04-2017 14-11-50.gif

SamWorthington
11-Garnet

Does anyone know if Creo 5 can offset with intersecting surfaces?

PTCModerator
Emeritus
Status changed to: Acknowledged
 
SamWorthington
11-Garnet

As shown below, Onshape can do it and PTC did of course buy the company back in 2019, but I'm now running Creo 7, and PTC still haven't manged to sort this out for what is supposed to be market-leading software.

 

SamWorthington_0-1613642184325.png

 

SamWorthington
11-Garnet

@esallingboe-2 Thanks for your input and sorry I didn't acknoledge it earlier.

 

I've never found the Automatic Fit option to be any practical use. Are there situations where you find it helps?

 

Sam