Im trying my first DIY catenary cut hex tarp and i was wondering what is the best way to make the cat cuts? I was thinking using cardboard but i dont really know. Thanks.
Im trying my first DIY catenary cut hex tarp and i was wondering what is the best way to make the cat cuts? I was thinking using cardboard but i dont really know. Thanks.
I used packing tape and hung the fabric on the wall and traced a string hung to the desired depth. I did this for all cuts of the tarp, but upon further investigation I learned that gravity was not playing along nicely. So I took the tarp halves and folded them in half and lined up the cuts , one half on top of the other, and cleaned them up with a roller cutter.
Your idea of using cardboard sounds like it would be easier.... And more uniform
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I used an old woodworkers trick of taking a thin strip of wood and tying a string to the ends to make a bow shape. Here's my post with pictures on it http://www.hammockforums.net/forum/s...0&postcount=43
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Cardboard will work fine, needs to be length of ridgeline. Put string on each end, drop it in the middle to desired length as stated above. Trace and cut...
I have some fiberglass rods for fishing wires in walls.... It takes two people but one can flex a rod so it touches all three points and someone else can trace it. If you have something flexible like a piece of matchbox car track or something I like that method.
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I have used the string trick. Just put a piece of cardboard up on the wall and pin a piece of mason line with the desired droop to the cardboard. Then carefully trace and cut. Worked on 4 tarps so far.
If all else fails free hand it by marking some points on your fabric. Ends, Midpoint, and a few points in between. This works great on stacked Silnylon. You just need to get the fabric taught or at least flat before cutting.
I have not used this technique with hammocks but I've done something like this in my **** Yankee Workshop. This link shows a way to do it.
I've asked other hammockers how they made their cat cuts and many say they use the "string trick" but I am not sure it is the same as this. Hope this helps.
-Sarge
http://www.mathopenref.com/constellipse1.html
DIY gear supply has full plans for a hex tarp including a technique for establishing the cat cut. I have never tried it to vouch for it, but it might give you a good idea.
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