Sketcher has to follow a bunch of rules to place something, copy/paste is too vague, I think you will need to draw it.
You can copy the entire sketch:
https://forum.freecadweb.org/viewtopic.php?f=3&t=40273

Infill is set by the slicer but if your willing to work at it you could model it with some inner material removed. Something like start with a hollow tube, then add material where you want to get your final solid.

No bug report required. That being said, maybe you found something but to report an issue we need to analyzed what was done. Sometimes the user is the bug :). Chamfer is FreeCADs weakest tool. We always add those features last so they are easy to fix. Once a model is complete they are fine but if yo...

Op wrote:

Freecad starts normally, but opening of any example project immediately crashes.

I don't know much about this; How about a different file?

If anyone does have a moment though, I'd appreciate some feedback on my implementation of that slope on the side and whether I could've done it a better way...if not, don't worry about it How about this (see pic). :D Just joking around. Nice work. Maybe not the best design but cantilever stuff sags...

This does work (see below), it closes sketcher, and switches to tree mode. It doesn't work in my macro but I will look into that. Thanks. import FreeCAD import FreeCADGui import time from pivy import coin import FreeCAD as App, FreeCADGui from PySide import QtGui,QtCore Gui.ActiveDocument.resetEdit(...

@openBrain, I tried that line of code and it does not want to work. I researched the functions and I can't see why. It's no big deal cause I have code that works but there is something not right. If I run from the console: >>> FreeCADGui.getMainWindow().findChild(QtGui.QDockWidget, "Combo View").fin...

Or, use your original sketch edge and cut around the bottom. I like the approach from chrisb better but both might have a usage.

@openBrain, thanks, I was thinking about that. I didn't have the findChild in my mental toolbox, got it now.

This also slows down refresh so with lots of circles it can be better to use a lower resolution.