Drawing a corner overcut

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rascalito
Posts: 55
Joined: Sun Oct 17, 2021 12:46 am

Drawing a corner overcut

Post by rascalito »

Hello!

I would like to make a corner overcut. Apparently it's also known as dogbone.

https://wiki.freecadweb.org/Path_DressupDogbone/en

Well, what I mean is that I need to make a rectangle with some Mickey Mouse ears at each corner, like this:
Screenshot from 2021-10-24 11-38-38.png
Screenshot from 2021-10-24 11-38-38.png (14.7 KiB) Viewed 959 times
The doc says that I should select Path -> path dressup -> Dogbone dressup.

My problem: where are these menus?
I have checked all the menus from the sketcher, none seems to correspond to this drill-like icon.
I have also check in the application menus, but found no paths.
Exit from sketch, no such menu either.
I thought it might be similar to fillets and I have checked the menus after selecting the corner line
in part view as below... nothing seems to do it.
Screenshot from 2021-10-25 15-30-05.png
Screenshot from 2021-10-25 15-30-05.png (9.24 KiB) Viewed 959 times
Thanks for any hint!
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Forthman
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Location: Tarn-et-Garonne (82)

Re: Drawing a corner overcut

Post by Forthman »

Hi,
The Dogbone function is only available in the Path workbench, and it is not intended to model the part but to generate g-code.
(they will not be visible in the modelled part)
Capture d’écran_2021-10-25_09-14-06.png
Capture d’écran_2021-10-25_09-14-06.png (49.26 KiB) Viewed 934 times


If you want to model these dogbones on your part, you have to do it manually, in a sketch with 4 circles for example
Capture d’écran_2021-10-25_09-19-11.png
Capture d’écran_2021-10-25_09-19-11.png (19 KiB) Viewed 934 times
Capture d’écran_2021-10-25_09-19-26.png
Capture d’écran_2021-10-25_09-19-26.png (19.45 KiB) Viewed 934 times
rascalito
Posts: 55
Joined: Sun Oct 17, 2021 12:46 am

Re: Drawing a corner overcut

Post by rascalito »

Hello!

Thanks for your reply!
Very interesting and unexpected info about GCode generation. I have a small CNC
in the lab, and it will certainly be useful.
As for the sketch, I noticed there are some ways to record macros, so I will check if it's feasible
without too much effort. It should be feasible with the rectangle position, size and corner diameter.

Thanks!
rascalito
Posts: 55
Joined: Sun Oct 17, 2021 12:46 am

Re: Drawing a corner overcut

Post by rascalito »

Hello again!

By the way another question: I'm trying to create a mickey mouse rectangle. From the geometrical point of view,
it should be feasible with only width, height and radius. And its position of course.
Screenshot from 2021-10-25 21-12-20.png
Screenshot from 2021-10-25 21-12-20.png (23.63 KiB) Viewed 837 times
Now there is only one constraint missing (position aside). If I could either constrain the angle (in green in the
attachment) to 45 degrees, or if I could constraint the green A and B distances to be equal, It would be done.
I could of course constraint both distances by r*sqrt(2)/2, but they just have to be equal.
I also plaid with the angle, without success, it cannot be done with points, apparently.

Is this possible?
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Shalmeneser
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Location: Fr

Re: Drawing a corner overcut

Post by Shalmeneser »

:idea:
Attachments
Mickey.FCStd
(16.17 KiB) Downloaded 7 times
Capture du 2021-10-25 19-02-23.png
Capture du 2021-10-25 19-02-23.png (12.59 KiB) Viewed 786 times
Capture du 2021-10-25 18-50-17.png
Capture du 2021-10-25 18-50-17.png (22.85 KiB) Viewed 791 times
Capture du 2021-10-25 18-41-43.png
Capture du 2021-10-25 18-41-43.png (8.38 KiB) Viewed 794 times
Capture du 2021-10-25 18-36-48.png
Capture du 2021-10-25 18-36-48.png (13.55 KiB) Viewed 799 times
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