The Chamfer and Blend tools in the app are directly calling ACIS SDK procedures from Spatial Dassault.

Some of the more common issues for an edge not blending includes:

--tolerance/topo issues along an edge: You can see if there are any tol/topo issues with a part by using Verify : Check Object

--curvature constraints : the radius is to high for the given curvature and it's impossible to create a "rolling ball" blend at the radius value

--order of blends : try switching the oder of blend edges if you have shared vertices among separate edges

--split your part and blend the splits. this also helps locate shelling issues.

Alternatively I have seen fixed width blends work where rolling ball blends fail. The fixed width algorithm is completely different and sometimes more forgiving than rolling blend. And import/export your part to STEP and sometimes repair tolerances.

Tim

Edited by user Tuesday, November 21, 2023 12:46:48 PM(UTC)  | Reason: Not specified

If you can provide a file with steps to repeat, I will send that to Dassault for response.

I can also try the part in TurboCAD and see if that handles it differently. I have access to source code and can compare with ViaCAD/Shark blend.

Tim

Tim here is a simple example of the issues I've had with blends from all versions beyond v8 . In v8 I can push a blend between both ellipses quite easily and quite far where the latest v14 version can barely make a blend . This was saved as a v8 file so it can be tested on both the old and new versions . This issue seriously cripples the designs I try to accomplish
I can often accomplish what I need with the newer version depending on the design , but for the most part I need to rely on v8 which isn't perfect but it is much stronger for creating oddball blends .
I've talked with Todd once before about this and though there was some improvements made at the time because of this (v12) it was still weak

Edited by user Tuesday, March 19, 2024 1:29:39 PM(UTC)  | Reason: Not specified

Not sure what is happening, but first few times I tried using "10mm radius"?** SharkCAD locked up, so had to Force Quit, when I reopened file, defaults was 0.39" for radius, which then locked up again, so another force quit... re-opened test file, tried 1.9 inches and it worked using build 1652

Mike

Edited by user Tuesday, March 19, 2024 3:32:16 PM(UTC)  | Reason: added build number **10 was probably inches on import, but last saved setting was 10mm

Yes Tim please supply that to them , that is only a test example to show you and not anything of importance . I just downloaded the latest build last night and this is always the first type of test I do .
If you try v8 you'll find you can push it much further than 1.4" . The below I pushed it to 1000" rad . It's not often I can get near that without the software freezing and locking up but it seems to like it this time

As I mentioned previously - I had talked to Todd about this in version 12 I believe but it could have be one before . Some improvement was made at the time but it never got back to being near the same strength as version 8 . With similar stuff can easily freeze v8 on small blends , so it wasn't perfect

I used to do similar blends in mastercam , and with that I was always able to push blends into blends to an extreme . Even v8 could never keeps up to what I was able to do , but it is the strongest version for this .
I don't expect the power of what I was used to with mastercam , but picking up viacad afterwards was beautiful because it had a similar feel to what I was used to .

I have to say that this is my only gripe with the software and if this feature can be resolved and possibly made strongest of all other versions then you'll have made at least one guy super happy

Edited by user Tuesday, March 19, 2024 8:35:12 PM(UTC)  | Reason: Not specified

Thanks i appreciate this .
I totally understand if it can't be added to the current version but it would be great if it can be done for v15 .
As mentioned before v8 had it's weakness's as well and I've had freeze ups on what should have been simple blends . I was quite surprised with how far I was able to push the example I provided , normally I'd never be able to create a blend as large .

I create a lot of organic shapes , most of this involves joining and blending a bunch of geometries together to get the shape I want . I think with normal every day parts the blend works perfectly fine , but it's with the oddball shapes where the struggle is

Edited by user Wednesday, March 20, 2024 11:10:21 AM(UTC)  | Reason: Not specified

that's an interesting approach and if it works as you say then it's a good solution for the time being . Is this something that could be implemented into a v14 build or would this be more into v15 ?

Tim , I see that your blend fix has been added to v15 . How many versions back does the drop down menu offer . Your example shows v10 and I'm hoping it goes back further