New Lines Don't Constrain To Existing Lines

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Helmanfrow
Posts: 16
Joined: Tue May 05, 2020 5:21 pm

New Lines Don't Constrain To Existing Lines

Post by Helmanfrow »

Hi, there. First time listener, first time caller.

I'm pretty new to FreeCAD. Still bashing my head against the desk a lot.

Here's what I'm dealing with:

I export a floor plan from Sketchup as DXF.
I import the DXF into FreeCAD.
I select all the 'Shape" objects in the Tree View
In the Draft workbench I click the button marked "Convert bidirectionally between draft objects and sketches"; A Sketch appears in the Tree View
I delete the shape objects.
I switch to the Sketcher Workbench and open the sketch for editing.
I attempt to draw new lines but the "Fix a point" constraint symbol doesn't appear when I hover over the edge of an existing line.
I draw lines elsewhere in the sketch but those lines don't activate the constraint, either.

I smash my head against my desk in frustration.
I open a new sketch and draw some lines; the constraint works.

I turn to the forum for technical and emotional support.
chrisb
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Joined: Tue Mar 17, 2015 9:14 am

Re: New Lines Don't Constrain To Existing Lines

Post by chrisb »

Switch on Auto constraints.
And you can check your DXF import options. You can create a sketch including coincidence constraints right away.
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Helmanfrow
Posts: 16
Joined: Tue May 05, 2020 5:21 pm

Re: New Lines Don't Constrain To Existing Lines

Post by Helmanfrow »

chrisb wrote: Thu Dec 16, 2021 12:40 am Switch on Auto constraints.
And you can check your DXF import options. You can create a sketch including coincidence constraints right away.
Aha... where do I find Auto Constraints?
Bance
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Posts: 4186
Joined: Wed Feb 11, 2015 3:00 pm
Location: London

Re: New Lines Don't Constrain To Existing Lines

Post by Bance »

In the sketcher task panel, in edit mode for the sketch.
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