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About hardchina

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  1. Hi all, I'm looking for help with drawing some paper plans for an inflatable boat. the problem i have is working out the curves for a tube mitre joint, that can be drawn on a 2d pattern that relates to its 3d shape- is there an easy mathematical formula for drafting this? I'm really bad at explaining things so have taken a couple of pics.... the cut in this pic below is an s shape, doesn't show up well. when in 3d the cut is a perfect straight line. the only method i can think of is to use a 3d template (piece of pipe) cut to the required angle and mark out the fabri
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