Help creating curved edge on part (not fillet)

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vocx
Posts: 1856
Joined: Thu Oct 18, 2018 9:18 pm

Re: Help creating curved edge on part (not fillet)

Postby vocx » Tue Nov 12, 2019 5:59 pm

rocky3d wrote:
Tue Nov 12, 2019 12:03 am
...They are different and there isn't a measurement for the corner to edge, the radius should compute that dimension. ...
Is this what you want? You only have to use three-point circular arcs. Once you anchor the arc to the sides, and to the center line, you can control the curvature with the radius of the arc.
Sketcher_3point_arcs.png
Sketcher_3point_arcs.png (9.63 KiB) Viewed 63 times
freedman
Posts: 1023
Joined: Thu Mar 22, 2018 3:02 am
Location: Washington State, USA

Re: Help creating curved edge on part (not fillet)

Postby freedman » Tue Nov 12, 2019 6:50 pm

Maybe we need a side profile of the cutout.
rocky3d
Posts: 8
Joined: Mon Nov 11, 2019 8:32 pm

Re: Help creating curved edge on part (not fillet)

Postby rocky3d » Tue Nov 12, 2019 7:28 pm

vocx is right on track but I can't seem to use an of the model to anchor or constrain the sketch to. I will admit I am fairly new to FreeCAD but have been using various CAD tools for nearly 30 years, which in some cases clutters the thinking a bit from program to program...

Side view would just show the one curved edge and then the hidden line that represented the other curved edge inward. Something like the attached.
Attachments
sideedge2.jpg
sideedge2.jpg (16.59 KiB) Viewed 56 times
Bance
Posts: 212
Joined: Wed Feb 11, 2015 3:00 pm
Location: London

Re: Help creating curved edge on part (not fillet)

Postby Bance » Tue Nov 12, 2019 8:13 pm

Have you tried using the link to external geometry tool Image
rocky3d
Posts: 8
Joined: Mon Nov 11, 2019 8:32 pm

Re: Help creating curved edge on part (not fillet)

Postby rocky3d » Tue Nov 12, 2019 8:13 pm

Thanks vocx

I think you are showing exactly what I need. The others seem to think I want to create a shape inside of my current shape when I was just trying to add that large radius to my edges. Can you tell me more about how to anchor to the edges of the model? This is where I am lacking experience with FreeCAD, unable to define the sketch properly, or only to the main left edge and center point, rather than define based on the actual model. I am in part design mode currently, which might be another issue.?

I really appreciate you taking the time to assist, thank you!
chrisb
Posts: 19562
Joined: Tue Mar 17, 2015 9:14 am

Re: Help creating curved edge on part (not fillet)

Postby chrisb » Tue Nov 12, 2019 9:19 pm

Both PartDesign Tutorials include the usage of the "link to external geometry".