Cannot patch holes in surface body! Why?:

[ctbram]

https://imgur.com/a/UJtqe4R

From the image above you can see I have a surface body with three holes in it.  I have spent a day trying every conceivable thing and I cannot fill these holes and I am about to go to the garage and get a sledgehammer and pound my computer into a pile of rubble!!!!

Can someone please help me and tell me what the hell I have to do to simply patch these holes?

[FrodoLoggins]

Oh man been there before....

[HughesTooling · Accepted solution]

Edit Attached file, don't know why it didn't the first time.

See attached file. Bit of a bodge, Fusion's untrim doesn't work well so had to use extend on a set of trim surfaces which makes a mess.

But ended up with a closed body. See attached file. In the future if you have a distributed design, break the links and export as a f3d and you'll get more people likely to help.

Mark

[ctbram]

I am having the same problem with the left side of the handle now. I have
three holes and I cannot patch them!!!! What am I not understanding about
patch in fusion 360? THIS IS MADDENING!!!!!

It actually shows me the correct patch for an instance and then pops up a
useless error to the affect - Error I failed. No **** maybe tell me WHY
you failed????

Uploading the model again. If you could fix this I would be very grateful.

[ctbram]

Having the same issue with the left side of the handle.  Could you please repair these holes for me?  I am not clear what you did for the right side.

I REALLY HATE FUSION SURFACE MODELLING.  There are no good tutorials.  The only ones I can find are from Mr. Padantic from Autodesk.  Who stretches what should take 15 seconds to explain into 5 minutes and the videos are two hours long and maybe teach 3 new things.

[TrippyLighting]

---

@ctbram wrote:
What am I not understanding about
patch in fusion 360? THIS IS MADDENING!!!!!

---

Just like The One Ring, the patch command is to be used only at the uttermost end of need.

Thats where the metaphor breaks down. The one ring was to be avoided because it is powerful. The Patch command is to be avoided because it isn't. It creates pretty terrible surfaces.

Here you go:

 

[HughesTooling · Accepted solution]

I'm not too sure of what you were modifying on this part. Where you just increasing the diameter of the hole through the 2 parts? Are you sure it would not have been easier to defeature both parts in the solid workspace then build a single body for the new bore and combine cut from both?

Quite easy to defeature to this all in the solid workspace.

Mark

[TrippyLighting]

I don’t think a lot of people are aware of that functionality!

[ctbram]

Yes, this would be a good solution.  I just keep trying to make fusion 360 surface modelling useful for something.

[TrippyLighting]

Both, @HughesTooling @and I solved your modeling problems using surface modeling techniques. I find surface modeling in Fusion 360 can use improvements, but that does not mean that I don’t find it useful!

[ctbram]

I thank you both especially for including the fixed file.  I was under a crunch to try and make the channel roomier without disturbing the edges.  My solution did add undercuts though so I might revisit the whole thing and just defeature and then make a new positive of the channel needed and boolean out the region.

I do appreciate everyone's help and input on this though.  I am really trying to learn surfacing techniques and I have come across the need on several occasions and find I avoid them as I always get wrapped around the axle due to no good tutorials explaining complex surfacing problems and fusion peculiarities. (as an example centerlines breaking surface trim operations)

Cheers and thanks again to all.  I appreciate the helpfulness of the forum.