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Old 07-05-2019, 09:07 AM
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teflonrocketry1 teflonrocketry1 is offline
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It depends on the body tube diameter and the relative diameters of the shoulder and nosecone. I like to 3D print with at least 2 layers of overlap between the nosecone body and shoulder. For smaller cones about BT-30 and below that amounts to 3 layers at 0.4mm width; for larger diameters above about BT 30, 4 layers seems to work good. It is best to do a layer by layer view in your slicing software and look for the amount of overlap. A single layer of overlap will be weak at the transition point unless you are doing a post treatment like isopropyl alcohol for PLA and acetone for ABS; but even then the one layer of thickness will still be the weak point. For cones wider than BT-60, I use 5 or more layers as indicated by the amount of overlap shown in the slicing software. This becomes a problem as body tubes get thicker and the difference in cone and shoulder diameter becomes greater. There are some tricks you can use to get sufficient overlap between the cone body and shoulder to get the structural integrity required.
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