loft did not regenerate properly cannot use faces or regions with inner loops as profiles

tom_jelly

I'm trying to loft a shelled (tube) to a smaller diameter circle .  I get the error  "loft did not regenerate properly cannot use faces or regions with inner loops as profiles" probably because I am unable to select just the OD of the tube as the profile to loft.  I am able to select the OD in all other functions EXCEPT loft.  is this a bug or feature, and what am I doing wrong.  (I initially was trying to shell a formed solid into a tube but was not able to see some internal segments to select them to shell so had to roll back and shell my way out)  Also, how do I make all the segments of this the same color:
https://cad.onshape.com/documents/0c0abff3e620cfd6f7687db0/w/63f09bb442585f39287cb605/e/0cd0fd5d5c3b448ea1fc593f

mahir

Your document link is view only, so I can't make a working copy, but I did manage to recreate part of your geometry. I don't see the same problem. Did you remember to create the loft as a surface body instead of solid?

https://cad.onshape.com/documents/22121e19f0b44192dd827fc3/w/9b38613ad8f2222d4f5c1020/e/ca86418511ed52840bfc4768

tom_jelly

thanks, that works great.  I started out as all solids then shelled it to get the correct wall thickness.  The shell function is looking for a face to remove- with a surface there is no face.  I was able to do it via thicken though, so all is well

caroline_beard787

I am attempting to make a loft but receive the error message: cannot use inner loops as profiles. I have tried many ways to fix this and am stuck. I have attached a copy of my document, as well as what it is meant to resemble. Thank you!

Thingiverse:
Customizable Cube Gears by emmett - Thingiverse

My doc:
https://cad.onshape.com/documents/455938b08b626a0a124e8512/w/03acb07e6f50bce12dc60f8c/e/e949e09c2b009df459c3ce63?renderMode=0&uiState=665770995a3276680b8e9468

mahir

caroline_beard787 said:

I am attempting to make a loft but receive the error message: cannot use inner loops as profiles. I have tried many ways to fix this and am stuck. I have attached a copy of my document, as well as what it is meant to resemble. Thank you!

I tried fixing your model, but something is up with the sketch you imported. The line segments don't form a closed profile, even after trimming and joining the odds and ends to make the profile a connected chain. It's also better modeling practice to create the gear teeth with a pattern vs cutting them all at once with a complicated sketch. I'll try doing that next if I get around to it.

caroline_beard787

It would be amazing if you would be able to create with a pattern, I attempted them originally using the circular pattern tool however importing them onto the sides did not format correctly. My partner did it using a normal sketch, but he didn't do it very well, hence the difficulties. I greatly appreciate your input and would be grateful for any further advice.

mahir

I'm sure the dimensions are off. But here's one way to do it.
https://cad.onshape.com/documents/4017fe3a26f0c01b8ece2718/w/072738ce01c50f61ca864bf0/e/a0c07e9b77fdb2b4df9ad301

caroline_beard787

That is so great, thank you so much! You have no idea how helpful that is, I greatly appreciate it!

mahir

No problem. You're welcome 👍🏼