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What's the best way to sketch a shape like this outline? (lemmy.ml)
submitted 1 week ago by to c/freecad@lemmy.ml
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I've tried using a B-Spline, using eliptical arcs, and making a polygonal approximation and then filleting it but none of them worked well and both were very hard to figure out how to measure for.

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[–] [S] 3 points 1 week ago (1 child)

I'm only trying to make the top down projection right now because that's the only part that needs to be dimensionally accurate to the original

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  • [–] 2 points 1 week ago*

    For just the top-down view I don't think you should have any trouble with just the regular sketcher with splines and/or arcs. Sounds like you're mostly having trouble measuring the part rather than actually sketching it?

    If top-down is the only plane you care about then you could try tracing the outline of the part on a sheet of paper and scanning that in using a normal document scanner, or even just scanning the part directly if it fits in the scanner. You can then bring that scan into FreeCAD and use it as a reference and it'll already be at the correct scale.

    For making the sketch, make sure you make use of the fact that the part is symmetric and you only have to sketch half of it.

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