Allan,

I never had any luck with the saran wrap, I have also tried masking tape and other things.

However, the Peel-Ply technique works great.. Search here on RCU and there are several detailed threads. I recently posted the following information in another build thread:

I wanted to suggest the Peel-Ply method when it comes time to glass the center of your wing. I have tried several different techniques and did this the first time during my last build with a Global Skyraider kit.

Take a look Here: [link=http://www.rcuniverse.com/forum/m_7276786/mpage_3/key_/tm.htm]Global Skyraider Build[/link]on posts numbers 62 and 68.

This technique was very easy to learn and gave me a great smooth surface over the fiberglass. I have tried several techniques of thinning epoxy, layering Saran Wrap over the fiberglass and glue, even using masking tape to smooth down the finish... The Peel Ply technique worked GREAT.

Also, I had often fought with the folded fiberglass or nylon tape provided in the kit wanting to leave fold marks in the center. I did some experiments with ironing the material and reported it on the [link=http://www.rcuniverse.com/forum/m_6496478/tm.htm]King Kobra Build[/link], post # 68. It really helped keep things flat.. BTW, the Peel-Ply technique was used over the entire plane in this thread: King Cobra Build I think Mikes use of Peel Ply starts on Post #49.

Just something to check into. I use the poly dress lining cloth for my "peel ply".. I think the material is better described in the King Kobra thread.

Good Luck