Wall thickness
Wall thickness is simply how thick your printed object is from side to side. Wall thickness directly applies to the strength of that section of the piece. Technically, you could have walls as thin as your extrusion width. You could have your printer print a single line of plastic thread for your entire piece and there are many examples of beautiful vases printed in that manner.
Depending on your application, that may not be the best plan of attack. A thin wall of 0.42mm is easy to break. Our first model in this book is a pendant based on the profile of one of my sons. This is a sentimental piece. Surely, I would not want the clasp to break during my daily activities. I would want to give the hook for the pendant enough strength ...
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