topic Re: Trouble Patching area on design in Fusion Design, Validate & Document Forum

Trouble Patching area on design

danotranto — Sun, 15 Mar 2026 19:45:24 GMT

Having a bit of trouble patching this area of a guitar neck design I'm working on. Dunno how to trouble shoot it, program is constantly crashing when trying to figure it out too.

Re: Trouble Patching area on design

TheCADWhisperer — Sun, 15 Mar 2026 19:55:22 GMT

@danotranto

Given all of the unresolved issues highlighted in the Timeline - if this were my design I would start over from scratch and use what was learned in this attempt.

Are you trying to follow a tutorial?

If yes, what is the link?

This arc has an illogical radius, and I would expect it to be tangent.

Or have a straight line between the curves.

Re: Trouble Patching area on design

danotranto — Sun, 15 Mar 2026 20:26:21 GMT

I did follow a tutorial for one part that seems to be working out:

I'll start this one over.

Re: Trouble Patching area on design

TrippyLighting — Sun, 15 Mar 2026 23:12:03 GMT

You missed a few loft settings to get that area patched. In my surfacing work, I almost never loft or patch between sketch entities, even it might be OK. I'd rather have a few unnecessary helper surfaces, but I never accidentally pick a sketch object when I need an edge, and if I need to change loft settings, I have options with a surface edge I don't have with a sketch object.

(view in My Videos)

Re: Trouble Patching area on design

TrippyLighting — Mon, 16 Mar 2026 00:24:45 GMT

Here is another video explaining how to create better surface quality on the other end. This requires a workaround for a bug I reported a year ago.

(view in My Videos)

Re: Trouble Patching area on design

johnsonshiue — Mon, 16 Mar 2026 17:10:59 GMT

Hi! I am wondering if it would be easier to create the clear intersection (without the blend) and then use Asymmetric Fillet to create the blend faces.

Many thanks!

Re: Trouble Patching area on design

TrippyLighting — Mon, 16 Mar 2026 17:40:28 GMT

Nope! I just tried it and it can't create a fillet, which isn't unexpected.

Re: Trouble Patching area on design

danotranto — Mon, 16 Mar 2026 18:43:08 GMT

Thank you!

I did re-do the sketch, had forgotten to use the helper surfaces.

Do you have recommendations for best practices when creating stuff like this? My projects always get incredibly messy with tons of sketches trying to bodge things together.

Re: Trouble Patching area on design

TheCADWhisperer — Mon, 16 Mar 2026 21:03:43 GMT

@danotranto wrote:

Do you have recommendations for best practices when creating stuff like this? My projects always get incredibly messy with tons of sketches trying to bodge things together.

@danotranto

Are you ready to start over from scratch?

Re: Trouble Patching area on design

danotranto — Tue, 17 Mar 2026 16:15:06 GMT

Hi,

I did re-do the project, wound up getting pretty messy again.

Having trouble going back into the project to make some of the patched areas tangent. When I go back in the timeline and unstitch everything it doesn't have any drop down menu for the edges to make them tangent (or curvature, etc).

My program is having a really difficult time with the timeline, it's not behaving as intended where you select an operation in the timeline and it will highlight that on the part, this only works like 1 out of 30 times.

Re: Trouble Patching area on design

TheCADWhisperer — Tue, 17 Mar 2026 17:47:37 GMT

@danotranto

You are working too hard. This can be simplified.

Also, your tool is going to break through here...

Re: Trouble Patching area on design

danotranto — Thu, 14 May 2026 17:17:45 GMT

Hi,

I wound up getting this part made, some issues with the file I'd like to adjust but can't seem to figure out how to go back in and change things.

In this picture you can see some strange ghosting or very subtle ridge in the part right at an area of patching. There is also a sort of sharp ridge going lengthwise, another area that had been stitched. I believe this was caused from not using the correct type of patch, and I should have used tangent, I'm having some difficulty going back in to do this, any advice on how to unstitch, change patch type and then re-stitch easily? My timeline is quite messy. I've unstitched the part but it will not allow new patching to be changed to tangent or curvature.

https://a360.co/3RE348m

Re: Trouble Patching area on design

TheCADWhisperer — Thu, 14 May 2026 18:14:00 GMT

@danotranto

Why did you use a mirrored spline rather than an arc?

Should Sketch12 be symmetrical (I added the horizontal construction line)

Re: Trouble Patching area on design

danotranto — Thu, 14 May 2026 18:58:12 GMT

Hi,

Thanks for taking a look at this. Sketch 12 probably should be symmetric, but I'm just using these arcs as helper surfaces and I believe how long they are doesn't matter as long as the radius of the arc is the same (which I believe it is).

For some reason my program is not going to the timeline position when I select to edit a feature.

When I go to switch to tangent in patch it gives me this error.