Hopefully this will save a few newbies from some pain. I have a new lesson to learn, infills and outer wall thickness. The parts prototype I designed a few days back came to some grief. It printed beautifully with Simplify3D with the normal default settings.
Well, one of the cylindrical pegs snapped off where it joins the main body…my fault. However I had not applied much force to it when this happened. On closer inspection you can see the infill pattern and the wall thickness. For scale the peg is 8mm in diameter. The peg wall would be less that 1mm (by sight)
I am now looking into improving the strength of the peg, with infill and or wall thickness. learning, learning, learning.
I hope my exploits save you from some grief.
Keep having fun