Cat cuts needed on RBTR SilPoly 2nd Gen?

[Spaceman]

I'm making a tarp using Ripstop By The Roll's Winter Tarp Kit. I ordered it with their 1.1oz. Silpoly 2nd Gen fabric. Has anyone made a tarp with this fabric, and if so, would you recommend incorporating the cat cuts or leaving the straight edges? It's supposed to have less stretch than Silnylon, so I'm thinking of skipping the cat cuts. Thoughts?

[sarge]

I'd take the "better safe than sorry" route.

My Epsilon tarp needs cat cuts---but that starts out as 1.1 nylon.

[Scuba]

from everything i have read cat cuts are not necessary for the silPoly. The reason silNylon needs it is the inherent "stretchiness" of the material. SIlPoly does not have that as an issue so the cuts are not needed.

[Ksbcrocks]

I didn't put it on my first silpoly tarp, I don't think it needed it, and I'm putting them on my next tarp anyways. Catenary cuts look better and get rid of some somewhat unnecessary pieces of fabric.

[Baby Huey]

I like my new rectangle cut wit no cat. It seems to make the doors come out straight. I did not make it and have not made one yet.

[V_Allen]

The Silpoly is the reason I went to a rectangular tarp. With the silnylon cat cuts help keep it tight as it stretches. Huey is right - the doors on his tarp come out really straight. If I had a winter tarp kit from RSBTR I personally would not use cat cuts with silpoly. That kit is a great deal.

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