I am working on my first rain fly/tarp with that material I got from wally world. This is also my first sewing project EVER. I have a few questions for you guys.
I am going to use grossgrain webbing to make line loops on the corners. With the stuff folded double over what size needle would you use in a machine??
Second, I am looking at the black cat style tarp instructions in a different topic and see that some guys trim the edges with grossgrain as well. When doing this are you laying it on top of the pre- hemmed rip-stop, or are you folding it in half and wrapping it around both sides. (what I mean is will you see it on both sides or only one?)
Third question, if you do not trim the edges with grossgrain how are you doing your edges? are you doing a single fold and hemming it where the cut edge can be seen on one side or are you folding it twice so the cut edge is not seen? If folding twice is it for a reason or just looks?
I have both halves spliced together and made the cat cuts to the body today. Need to get stronger material for the corner reinforcements and grossgrain tomorrow.
I did my cat cuts a lot different method than most I guess. I just laid a long piece of cardboard on the driveway and figured out that with a X wide piece of cardboard I needed a 7 inch drop on the ends of the cardboard edge when I swung a radius. I then had the wife hold an end of a string and kept swinging an arc with the other end starting at the center line and had her go further out until the arc swung past the lines I had marked as 7" down from the corner edges of the cardboard. I used the felt cracks in the driveway to keep everything squared up. Then held a marker on the end of the string and swung my radius, cut out the arc, then laid it on my rectangle tarp and adjusted the cardboard until it was anywhere across the marks I had on the tarp to be my desired corners. After all, it is a radius, so it really did not matter as long as the edge of the cardboard crossed the corner marks on my tarp.