Originally Posted by MAD777
Steve, here is a link to a method to create a hex tarp with all sides being equal, which means you only have to figure out one cat curve to use for all edges.
As to the amount of curvature, you will want more for silnylon that tends to stretch and less for spinnaker or cuben type materials that don't. I have used 3/4' foot for silnylon and was happy. For instance, a side of 6 feet would have a 4 inch deep bow in the middle.
Although for non-stretch material like cuben I have found as long as it is cut straight and you have 90* angles I have found no need for cat cuts as the tarp pitches perfectly. If it isn't cut straight then the addition of cat-cuts almost in a sense counters the non-straight edges to allow for a tight pitch.
JMO and YMMV
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