Putting strechers on the side is a very good way to reduce wrinkles. Besides SeeraAvas springclip idea you can also use 2 pieces of 1x4 < i like to use
CVG for this application> set them up like clamps, let me explain that. set the pieces on top of each other. looking at the
face of the board divide it into thirds lengthsways, in your mind. There is an onstage third an offstage third and a middle third. Get some 1/4" by 2"
machine screw eyes and some 1/4" T-nuts. Drill all the way through the boards on the "off
stage" third of the board. place the t-nuts into the backside of the bottom boardrun a 1/4"
nut up the shaft of the screw-eye about 1 1/2", put a
flat washer on then push thescrew eye through the top board and screw it into the t-nut. do this once about every
foot of the board ( 6' is about the most I will go for 1 strectcher, if you have a very tall
cyc you made need more) Now, making sure you board is nice and sanded, has no splinters or burrs sticking out, heck you can even
shellac it if you want, place the onstage 2/3' on the
edge of your
cyc. Tighten down the screw eyes once you bottom out on the washer use a box wrench to tighten a little more so the boards are really squished together on the
cyc material. Now you can set up a Pipe and 50 pound
base or some other offstage vertical
boom device. Get some 1/4" or larger Bungee material < you can usually buy it in bulk at a hardware store.> Tie one end onto the eye of the screw eye on each end of the board. tie the other end of the bungee around the offstage
boom pipe. Pull the bungee a
bit, tie it off, go to the other side and repeat, When you wrinkles are gone, you're done pulling.
Using Bungee helps eliminate the need for nightly re-strechtings.
Another good trick is to simple fill a Clean
hudson sprayer with hot clean distilled water and lightly mist the
cyc. this will essentially act like size on a
flat and cause it to draw up. It's important to use distilled water so you don't wind up getting mineral stains on the
cyc when the water dries up.
Hope that helps.