topic Re: Need help combining two objects in Meshmixer Forum

Need help combining two objects

Anonymous — Tue, 14 Apr 2020 15:06:58 GMT

I am at a loss as to how to do this. I need to wrap the mesh onto the face of the quarter round cylinder. I need it centered and to stand out about 1/4" from the rounded surface. The cylinder should be 6.75" tall and the mesh should be about 2" wide. Sorry for all the detail, didn't know what you would find when opening the stl.

appreciate any input on how to wrap this onto the cylinder

Re: Need help combining two objects

hfcandrew — Tue, 14 Apr 2020 18:40:44 GMT

Yep this can be done. I have a few questions, and let me make sure we are on the same page.

What is a quarter rounder cylinder face?
Do you want that emblem warped/wrapped/curved/molded around a cylinder?
And if so should that cylinder should be 6.75" tall with a diameter of 2"? Or the emblem should be 2" wide?
What orientation?
And should the emblem also be embossed onto that cylinder?

Re: Need help combining two objects

Anonymous — Tue, 14 Apr 2020 20:23:11 GMT

The face would be the rounded portion of the 1/4 round. A complete round cylinder would be 3.5” in diameter, it only need 1/4. I need the emblem to match long direction to long direction. The emblem would be 2” wide and wrap around the face. And the emblem would be embossed to the cylinder.

i hope that makes sense. I plan to take into vcarve pro and carve on my cnc out of wood.

thanks for the help

Re: Need help combining two objects

hfcandrew — Wed, 15 Apr 2020 14:48:29 GMT

This is should be easy but something strange with your emblem's mesh is not allowing the standard workflow to happen. Typically all you want to do is plane cut a cylinder to your dimensions and then make your emblem into a drag and drop meshmix part, then just drop on it the cylinder... but it keeps failing.

Creating meshmix parts to wrap these parts onto other objects was the original purpose of Meshmixer: https://help.autodesk.com/view/MSHMXR/2019/ENU/?guid=GUID-9B48D29A-C62F-4E13-8AB4-54E19F1F9875

https://www.youtube.com/watch?v=N8V9UnaD0Hc

To make a custom part

Import your emblem
Select All>Convert To>Open Part
Go to Meshmix>My Parts
Drag and drop it and position your part onto the 1/4 cylinder

However this keeps failing, sometimes this happens if the mesh density is too big (my processing time for this was like 10 mins, I thought my computer was frozen and crashed, but no just took a long time). So I cleaned it up a bit: reduced the mesh density, remeshed, smoothed it, and plane cut some noise off from the boundary...

but it still failed. I'll play again with it later. But for now you give that a try, maybe its just my slow laptop. Just practice/experiment with some basic low density parts first.

Re: Need help combining two objects

Anonymous — Wed, 15 Apr 2020 20:06:32 GMT

I managed to get the part drug over and it embedded into the curved surface, however the edges are still sticking out. Did i miss something? really appreciate the help.

Re: Need help combining two objects

hfcandrew — Thu, 16 Apr 2020 03:11:18 GMT

That does not look warped at all, as a meshmix part should contour the surface. I think you did 'convert to solid' rather than 'open part'.

Open parts are what you need, but they often fail as there is something wrong with it that MM can't handle. I can make any other shape and get it to work, just not that one.

Gonna have to call in the big guns... @Anonymous ?

Re: Need help combining two objects

Anonymous — Thu, 16 Apr 2020 03:29:23 GMT

Tried it again, made sure that it was converted to open part. Same result. Bugs in the machine?

Re: Need help combining two objects

hfcandrew — Thu, 16 Apr 2020 03:31:21 GMT

I think some artifact in the mesh that is blocking MM from running its processes. I donno!

Re: Need help combining two objects

Anonymous — Thu, 16 Apr 2020 13:50:00 GMT

Several issues on the mesh you're trying to convert to an open part.

1. Too high mesh density. You need to reduce the mesh density drastically. Otherwise dropping and dragging the part on the target mesh will be sloooow.

2. There are interior open boundaries. MESHMIX open parts do not support interior open boundaries. You need to fill the interior boundaries (e.g. using Inspector clicking the blue spheres pointing to the interior boundaries one by one)

3. There's a non manifold issue at the exterior open boundary (Inspector shows a red issue). To repair this do a PlaneCut next and parallel to the boundary. Use SELECT/Extrude on the infill surface to give the needed height again.

4. To avoid distortions its a good idea to add some surrounding brim. Run BooleanUnion to weld it to a plane object e.g. a MESHMIX/Primitives object.

I attach an OBJ to convert it to a part.

Re: Need help combining two objects

hfcandrew — Fri, 17 Apr 2020 02:55:28 GMT

You are so good. Ya I got your's working for me too (on a quarter cylinder):

I was trying the exact same steps too but I could never get the boolean union on the plane to work, was failing and distorting and I tried like 50 different boolean settings and extruding the emblem and smoothing, reducing, remeshing etc etc etc.... I just need to work on my magic touch.

Re: Need help combining two objects

Anonymous — Sat, 18 Apr 2020 01:25:04 GMT

Would you be willing to send me the file? I am quite new to Meshmixer and am having a hard time working through this. TIA.

Re: Need help combining two objects

hfcandrew — Sat, 18 Apr 2020 02:12:16 GMT

Yep np. See attached

Re: Need help combining two objects

Anonymous — Sun, 19 Apr 2020 03:30:00 GMT

Thank you both for the help. Greatly appreciated.