Applying the Draft operation in Part Design WB removes a face.
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Applying the Draft operation in Part Design WB removes a face.
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24291 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: Dutch/Belgium (nl_BE)
See attached project file. All operations are done in the Part Design WB in order to make use of the Draft operation (see screen print 3).
Screen print 1: 2 sketches. Sketch 1, the one with the drill hole, is in the YZ plane and symmetrically padded. Sketch 2 is in the XY plane and padded normally.
Screen print 2: boolean cut operation
Screen print 3: result after the Draft operation (reverse pull direction checked) on both sides. This side is OK.
Screen print 4: the other side is not OK. The face has disappeared and the drill hole has been closed.
It would be great if someone could contribute to one of the following questions:
1) Is the disappearance of the face due to wrong manipulation? What would be the correct approach?
2) Is there an alternative operation in other WB's?
3) Keep it as is but restore the face (and open the drill hole). How do I do this.
Thanks.
- Shalmeneser
- Veteran
- Posts: 9475
- Joined: Wed Dec 23, 2020 12:04 am
- Location: Fr
Re: Applying the Draft operation in Part Design WB removes a face.
* Boolean ???
* PartDesign_Draft is prone to problem
* PartDesign_Draft is prone to problem
- Attachments
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- Cut_Grip_SHALM.FCStd
- (18.59 KiB) Downloaded 17 times
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- Capture.PNG (18.07 KiB) Viewed 691 times
Re: Applying the Draft operation in Part Design WB removes a face.
Draft is problematic with holes. You could make the draft before making the hole with another pocket though. Draft is still affected by the topological naming problem, so it is better to use a pocket instead. It is recommended anyway to use the simplest tool possible, and the simplest PartDesign features are Pads and Pockets.
Edit: Added the file.
Edit: Added the file.
- Attachments
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- Cut_Grip_cb.FCStd
- (21.05 KiB) Downloaded 12 times
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- SnipScreenshot-2b185d.png (7.04 KiB) Viewed 668 times
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Re: Applying the Draft operation in Part Design WB removes a face.
Hello Shalmeneser,
Thank you for your attachment. I studied it. The Pocket operation works much nicer than the boolean Cut. Thanks for the tip.
The screen print shows 2 objects from a much bigger project where the Part Design WB Draft operation has been successful. So I didn't expect a problem in using the Draft once more.
I don't understand the triangle like lines in your screen print. Can you please explain what you did to succeed in drafting both faces?
Probably due to the Pocket operation the Draft operation doesn't work at all on your file/object.
Thank you.
Thank you for your attachment. I studied it. The Pocket operation works much nicer than the boolean Cut. Thanks for the tip.
The screen print shows 2 objects from a much bigger project where the Part Design WB Draft operation has been successful. So I didn't expect a problem in using the Draft once more.
I don't understand the triangle like lines in your screen print. Can you please explain what you did to succeed in drafting both faces?
Probably due to the Pocket operation the Draft operation doesn't work at all on your file/object.
Thank you.
Re: Applying the Draft operation in Part Design WB removes a face.
Hello chrisb,
Thank you. I studied your file. Very nice solution indeed!
You are right about the holes. Without holes the Draft operation works fine.
It is bizarre though that in my big project the Draft works as expected, including the holes (see screen print previous post). Maybe it is because these objects were in the XY plane whereas here it is in the YZ plane.
Thanks.
Thank you. I studied your file. Very nice solution indeed!
You are right about the holes. Without holes the Draft operation works fine.
It is bizarre though that in my big project the Draft works as expected, including the holes (see screen print previous post). Maybe it is because these objects were in the XY plane whereas here it is in the YZ plane.
Thanks.
- Shalmeneser
- Veteran
- Posts: 9475
- Joined: Wed Dec 23, 2020 12:04 am
- Location: Fr
Re: Applying the Draft operation in Part Design WB removes a face.
Boolean operations are seldom used.
.
.
The lines are from the sketch (select and space-bar to show).I don't understand the triangle like lines in your screen print. Can you please explain what you did to succeed in drafting both faces?
I've done the same than ChrisB but in 2 sketches (not wanting to modify too much your sketch).
- Shalmeneser
- Veteran
- Posts: 9475
- Joined: Wed Dec 23, 2020 12:04 am
- Location: Fr
Re: Applying the Draft operation in Part Design WB removes a face.
I've downloaded the bad file !
Here the right file.
Here the right file.
- Attachments
-
- Cut_Grip_SHALM.FCStd
- (30.97 KiB) Downloaded 11 times