Hi all,
I'm modeling dovetail-like joinery and after messing around with objects created in part design workbench and then fusing them with the functions in the part workbench I kind of realized that I was making my life more difficult than needed, so I decided to re-create all the parts using part design only (specifically the loft functionality).
Sketch of half of the subtractive loft:
I suspected that there might be an issue with the drawing at (0,0) and sure enough I can't pad this sketch and get a TopoDS:Face error, presumably because that point has no actual dimensions to pad. I suspect that when I create the second sketch for the loft and then try and use the subtractive loft functionality to create the male portion of the dovetail out of a solid cube, I will have similar issues.
I know that I can break this into 4 sketches and do two subtractive lofts (one for each side, bisected at the intersection), but I'd kind of like to keep it all contained and easier to adjust dimensions if possible.
Any tips on how to make this work with just two sketches/a single loft, or do I need to break it up?
Edit: I know in this particular case just doing an additive loft with the inverse sketch would work, but the dovetail geometry needs to work on other shapes (like a cylinder) and I'm not quite good enough at freeCAD to do that yet.
Example:
Part of what I'm trying to accomplish is completely get rid of boolean/fusing operations and just do a simple subtractive loft on any solid where I need joinery, with the two sketches changing depending on whether or not I want a male or female end - hope that makes my goals more clear.
Thanks in advance.
Version Info:
OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24291 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/United States (en_US)
Subtractive loft issue
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Re: Subtractive loft issue
You can lift the upper line by a mm or so.
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- Shalmeneser
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Re: Subtractive loft issue
Small fillet at the tip.
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Re: Subtractive loft issue
Both great answers that work well - thank you!