PartDesign Mirrored Question

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bernard_01
Posts: 47
Joined: Sun Mar 24, 2019 9:22 am

PartDesign Mirrored Question

Post by bernard_01 »

Hi,

I started reverse-engineering the base of a rat trap as an exercise, to align myself with the way things work best in FreeCAD. FreeCAD looks beautiful to me so far. I am mainly using Sketcher with Part Design.

Now I am failing to apply the PartDesign Mirrored tool which responds with an error "Recompute failed! Please check report view."

The idea is to mirror a feature, or features that make the small double bearing protruding from the center of the main body.

The mirror plane should be "latchBearingMirrorPlane"

I can see what the problem could be. There might be an issue with mirroring that key hole feature "PocketCenterBearingHole" (that also cuts into the base) while the features that this cuts into are not yet mirrored.

I don't want to push things too far. Is there perhaps an easier way of doing this? I am confused.

Many thanks!

OS: Windows 7 Version 6.1 (Build 7601: SP 1)
Word size of FreeCAD: 64-bit
Version: 0.20.29177 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: 68e337670e227889217652ddac593c93b5e8dc94
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.2
Locale: English/New Zealand (en_NZ)
Attachments
Illustration
Illustration
mirror.png (9.73 KiB) Viewed 619 times
RatTrapBase.FCStd
My test file
(129.12 KiB) Downloaded 26 times
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NewJoker
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Re: PartDesign Mirrored Question

Post by NewJoker »

You can't apply a mirror feature to another mirror feature. For that you need this tool: PartDesign MultiTransform
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Shalmeneser
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Location: Fr

Re: PartDesign Mirrored Question

Post by Shalmeneser »

:idea:
Attachments
Capture d’écran 2022-08-18 133839.jpg
Capture d’écran 2022-08-18 133839.jpg (83.14 KiB) Viewed 596 times
RatTrapBase_SHALM.FCStd
(115.34 KiB) Downloaded 23 times
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thomas-neemann
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Re: PartDesign Mirrored Question

Post by thomas-neemann »

Gruß Dipl.-Ing. (FH) Thomas Neemann

https://www.youtube.com/@thomasneemann5 ... ry=freecad
bernard_01
Posts: 47
Joined: Sun Mar 24, 2019 9:22 am

Re: PartDesign Mirrored Question

Post by bernard_01 »

Shalmeneser wrote: Thu Aug 18, 2022 11:40 am:idea:
Thanks for the quick reply.

I still can't learn from it. I can't make it work. I don't know how to enter the right features and transformations.

Your transformations are not equivalent. The original is modified (feature PocketCenterBearingChamfer missing).

Please see the illustrations.

Could you please explain how to enter the data into the MultiTransform tool? I know it is a lot to ask for and I appreciate your help.

I could not create a MultiTransform based on PocketCenterBearingChamfer which is the best I could find to bypass / replace the first mirror transformation.

Many thanks.
Attachments
ChamferTransformed.png
ChamferTransformed.png (2.94 KiB) Viewed 520 times
ChamferOriginal.png
ChamferOriginal.png (3.71 KiB) Viewed 520 times
user1234
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Re: PartDesign Mirrored Question

Post by user1234 »

bernard_01 wrote: Thu Aug 18, 2022 2:07 pm Your transformations are not equivalent. The original is modified (feature PocketCenterBearingChamfer missing).
Just add it.
2022-08-18_17-25.png
2022-08-18_17-25.png (109.44 KiB) Viewed 479 times

Greetings
user1234
bernard_01
Posts: 47
Joined: Sun Mar 24, 2019 9:22 am

Re: PartDesign Mirrored Question

Post by bernard_01 »

Thanks. Works.
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