Help - How to create a custom 3D curved surface
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Help - How to create a custom 3D curved surface
Hi all
I am hoping to get some pointers on how to do a custom 3D curved surface. I am only a basic enthusiast user of Freecad, currently using version 0.20 on windows 10 (base build).
Would anyone have any suggestions on how I should go about this?
Description:
My application is to replace a Driveway Bollard Light Base Plate that has been inadvertently dismembered by an inattentive learner driver. I have generated the basic top-down shape easy enough and have 3D printed a test piece to validate fitment to existing bolt locations and the curve of the bollard itself. I am ready to expand this now and attempt to prototype the final item.
I was thinking that I could just increase the heights of my various extrusions, add some internal cuts, and get the volume and strength needed. My nemesis though is the custom slanted curved surfaces on either side. I was hoping there might be a way to create solids with the custom curved surfaces needed, and cut away that curve from the base body? Or could there be a way to do it during the extrusion?
I'd thought at first a top and bottom sketch with a loft might do it, but that bottom curve is itself not on a flat plane so I don't yet have the skill to know how to draw it. I also thought perhaps a large Tube could be used, and slanted such that the inner surface of the tube cuts it away - but placing that would seem to be hit and miss and lacking in accuracy. Are there any Gui based approaches for creating custom curved surfaces as described? I am no Python-ista I'm afraid. I have attached some images to show my rudimentary efforts and the reconstituted (thanks super glue) base plate that I am trying to replicate.
Luke
I am hoping to get some pointers on how to do a custom 3D curved surface. I am only a basic enthusiast user of Freecad, currently using version 0.20 on windows 10 (base build).
Would anyone have any suggestions on how I should go about this?
Description:
My application is to replace a Driveway Bollard Light Base Plate that has been inadvertently dismembered by an inattentive learner driver. I have generated the basic top-down shape easy enough and have 3D printed a test piece to validate fitment to existing bolt locations and the curve of the bollard itself. I am ready to expand this now and attempt to prototype the final item.
I was thinking that I could just increase the heights of my various extrusions, add some internal cuts, and get the volume and strength needed. My nemesis though is the custom slanted curved surfaces on either side. I was hoping there might be a way to create solids with the custom curved surfaces needed, and cut away that curve from the base body? Or could there be a way to do it during the extrusion?
I'd thought at first a top and bottom sketch with a loft might do it, but that bottom curve is itself not on a flat plane so I don't yet have the skill to know how to draw it. I also thought perhaps a large Tube could be used, and slanted such that the inner surface of the tube cuts it away - but placing that would seem to be hit and miss and lacking in accuracy. Are there any Gui based approaches for creating custom curved surfaces as described? I am no Python-ista I'm afraid. I have attached some images to show my rudimentary efforts and the reconstituted (thanks super glue) base plate that I am trying to replicate.
Luke
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- Posts: 79
- Joined: Tue Jan 21, 2020 1:11 pm
Re: Help - How to create a custom 3D curved surface
The same way is possible in Part workbench.
- papyblaise
- Veteran
- Posts: 7998
- Joined: Thu Jun 13, 2019 4:28 pm
- Location: France
Re: Help - How to create a custom 3D curved surface
one idea without dim
- Attachments
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- base.JPG (26.5 KiB) Viewed 1371 times
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- base.FCStd
- (196.79 KiB) Downloaded 18 times
- Shalmeneser
- Veteran
- Posts: 9558
- Joined: Wed Dec 23, 2020 12:04 am
- Location: Fr
Re: Help - How to create a custom 3D curved surface
I think the round face is just a part of a sphere :
You need to give us some dimension and a picture where WE will be able to find the radius and the center (orientation like in my picture).
You need to give us some dimension and a picture where WE will be able to find the radius and the center (orientation like in my picture).
- Attachments
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- Capture du 2022-09-28 17-22-03.png (4.39 KiB) Viewed 1344 times
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- BadDriver_SHALM.FCStd
- (55.68 KiB) Downloaded 20 times
Re: Help - How to create a custom 3D curved surface
Hello,
@demonlibra How do you finish this item?
@demonlibra How do you finish this item?
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- Posts: 79
- Joined: Tue Jan 21, 2020 1:11 pm
Re: Help - How to create a custom 3D curved surface
Hi Lukeyson, hello to the Community!
One of the many modeling flows, the attached example (obviously always improvable and can also be modeled with the wb "Part") was created using the wb "Part design", "Sketcher" with the "collaboration" of the wb " Draft ", regardless of the measures but simply to show the modeling phases.
- Attachments
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- Driveway_Bollard_Light_Base_Plate.FCStd
- (920.03 KiB) Downloaded 34 times
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- Driveway_Bollard_Light_Base_Plate.gif (668.96 KiB) Viewed 1204 times
Re: Help - How to create a custom 3D curved surface
Hello,
@domad Very nice achievement.
I'm going to do this exercise again following your method.
Cordially
@domad Very nice achievement.
I'm going to do this exercise again following your method.
Cordially
Re: Help - How to create a custom 3D curved surface
Hi Bernard19, greetings to the Community!
Thanks, I'm glad you appreciated even more for wanting to try to reproduce the modeling, however, I warn you of possible problems with the "Create Thickness" function, depending on the thickness chosen, intersections are created that will inevitably lead FreeCad to failure, in this case it could be possible to opt for an internal subtractive modeling, then create the conformed seats for the screws.
- papyblaise
- Veteran
- Posts: 7998
- Joined: Thu Jun 13, 2019 4:28 pm
- Location: France
Re: Help - How to create a custom 3D curved surface
A bit faster to do the half moon in one chot
- Attachments
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- base2.FCStd
- (554.46 KiB) Downloaded 20 times