18+ scollado, French
@scollado@framapiaf.org avatar

Are there any @FreeCAD gurus around here ?
I'm looking for advice/help on how to apply a subtractive pipe to create a groove in a (weirdly) curved surface.
The surface is green in the pictures below.

This is a support for an electronic device and I'm trying to "hide" the power cable by "clipping it" in one of the 3 legs.

Happy to share a FCStd file if needed.
0.21

image/png

mfraz74,
@mfraz74@mastodon.social avatar

@scollado @FreeCAD Could you use sketch on surface in the curves workbench?

scollado,
@scollado@framapiaf.org avatar

@mfraz74 @FreeCAD
I never tried this workbench, at least as of now, maybe it's time to discover it 😁
Thanks for the suggestion 👍🏼

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado @mfraz74 @FreeCAD I finally got a chance to mess with some techniques this morning, and Mark’s suggestion of the CurvesWB is a good one. I used a PipeShell with two circle cross-sections and one of the helical edges as the spine. Then, I did a Boolean cut in the PartWB and applied a fillet to the edges of the channel (optional).

Does this capture what you’re after? There are some considerations for non-circular cross-sections.

Screenshot from FreeCAD showing a hidden-line view of a model. One of the spiral legs has a groove following the spiral.
Screenshot from FreeCAD showing a shaded view of a model. One of the spiral legs has a groove following the spiral.

scollado,
@scollado@framapiaf.org avatar

@chrishuck @mfraz74 @FreeCAD wow nice, that totally looks like what I'm trying to achieve!
I'll definitely have to try out this workbench.
Thanks for the time you put in this and also putting me on track with the solution.
I'll get my hands on the Curves WB as soon as I'm back home 👍🏼

scollado,
@scollado@framapiaf.org avatar
chrishuck,
@chrishuck@fosstodon.org avatar

@scollado @mfraz74 @FreeCAD That’s badass! Glad to help you out!

scollado,
@scollado@framapiaf.org avatar

@chrishuck @mfraz74 @FreeCAD In case that can be of any use, while this is printing I continued to explore possible solutions with the Subtractive Pipe operation of PartDesign (I'm a bit stubborn), and found out an alternative solution that use a setting that I never fully tested out : Orientation Mode = Auxiliary.

Now I have 2 choices for the next time I have to model this king of feature, nice!

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado @mfraz74 @FreeCAD So, I presume that worked? I’d like to see a screenshot of the result of the auxiliary orientation mode. My initial thought was to use a Subtractive Pipe in PartDesign, but I couldn’t get it to maintain the orientation correctly. I didn’t try the auxiliary.

scollado,
@scollado@framapiaf.org avatar

@chrishuck haa it seems that my screenshot didn't get attached to my last message. Here it is again:

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado I saw that screenshot of the feature being edited. What I was curious to see was the final output shape.

scollado,
@scollado@framapiaf.org avatar

@chrishuck Here is the result

image/png

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado That looks great! I’m going to have to experiment with that Auxiliary orientation feature. It’s way easier than the method I proposed. I prefer keeping my work within one WB when I can. Great work!

scollado,
@scollado@framapiaf.org avatar

@chrishuck I'll have to fiddle a bit with the thickness constraints and printing settings but Il looks pretty good for a first try 😁

scollado,
@scollado@framapiaf.org avatar

@chrishuck test fit, Looks like I have a little margin to adjust and it'll be good

image/jpeg

scollado,
@scollado@framapiaf.org avatar

@chrishuck last picture and I'll stop spamming you 😂:
Test fit with target device

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado That is super cool, Seb! You’re not spamming me at all. Love seeing stuff people are making with . Your initial question really tested my modeling skills to try and provide a solution for you. Glad we could all learn something together from your cool project!

chrishuck,
@chrishuck@fosstodon.org avatar

@scollado @FreeCAD How did those slots get in there in the first place? It seems to me like you could modify the sketch of the cross section to include the channel you want? Even modifying the sketch that produces the “positive” portions would yield the groove you want.

  • All
  • Subscribed
  • Moderated
  • Favorites
  • random
  • modclub
  • DreamBathrooms
  • InstantRegret
  • magazineikmin
  • everett
  • Youngstown
  • mdbf
  • Durango
  • slotface
  • rosin
  • thenastyranch
  • kavyap
  • GTA5RPClips
  • cubers
  • JUstTest
  • tester
  • osvaldo12
  • tacticalgear
  • ethstaker
  • ngwrru68w68
  • khanakhh
  • Leos
  • normalnudes
  • cisconetworking
  • provamag3
  • megavids
  • anitta
  • lostlight
  • All magazines