I've done some searching on catenary curves, and I'm wondering if anybody could explain, or link to a good explanation of how to set up a proper curve on a cat tarp? Any help you could provide would be much appreciated. Thanks!!
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 David Cohen (TheNewGuy) - F I've done some searching on catenary curves, and I'm wondering if anybody could explain, or link to a good explanation of how to set up a proper curve on a cat tarp? Any help you could provide would be much appreciated. Thanks!! on 05/21/2011 11:15:59 MDT I've done some searching on catenary curves, and I'm wondering if anybody could explain, or link to a good explanation of how to set up a proper curve on a cat tarp?Any help you could provide would be much appreciated.Thanks!!
 te - wa (mikeinfhaz) - F Locale: Phoenix cat curve the easy way on 05/21/2011 11:35:58 MDT let's say the ridgeline of your tarp is 10 feet long. you'll want to take both of your tarp pieces, before sewing together at ridge obviously, and hang it on a wall (garage?) with push pins. you want to make sure that both sides of your hung tarp are even and level. for this you'll maybe need a line level, and string, as your floor is certainly not perfect and measuring up from there could be off by a bit.this does not have to be precise, and only takes a few minutes. now, get 11' of ball chain from your pocket that you've previously purchased from Ace hardware and hang it even on the tarp ridgeline ends, so that the chain hangs about 1.5-2 inches below the straight ridgeline edge. this is the only hard part. you have to trace the ball chain (without moving it too much) with a sharpie. now take both pieces down to the machine and while holding each edge together, sew along your sharpie mark. that is the ghetto way. it works tho.. as the definition of a catenary curve is the sag in a chain hung from two points. Edited by mikeinfhaz on 05/21/2011 11:38:33 MDT.
 John Nausieda (Meander) - MLife Locale: PNW I've done some searching on catenary curves, and I'm wondering if anybody could explain, or link to a good explanation of how to set up a proper curve on a cat tarp? Any help you could provide would be much appreciated. Thanks!!" on 05/21/2011 12:00:08 MDT I agree with your method . I've used it in carpentry to lay out arches. I use spray paint to get the outline. If you could use a tempera paint in a sprayer it would probably wash out. Edited by Meander on 05/21/2011 12:01:02 MDT.