Several people mentioned the "selvage" edge of the fiberglass tapes. Notice that the "straight" edge has extra thread in it, and therefore sticks up higher than the rest of the tape, leaving a noticeable ridge. I always try to put that edge on the side that's either doesn't matter if it sticks up, or is easiest to sand away. As for part number, see http://www.wicksaircraft.com/catalog/product_cat.php/subid=298/index.html . I've been through several rolls of this stuff of all different widths, because it's strong (the equivalent of 9 ounce glass), and so convenient to roll a little off, wet it out, and stick it in place. The plastic method that Dan talked about works great too, and even allows you to stagger the thinner 5 oz. glass into a taper that requires almost no sanding.
For you guys that have never tried the "plastic layup" method, you don't know what you're missing. I learned it from the folks at Task Research when I was working on the Lionheart project. I've done my whole plane that way. For big stuff like wings, it gives you the ability to get it all layed up a lot faster than dorking around trying to get everything in the right place, and with the weave still straight. You can see me using the tapes and plastic layup at http://home.hiwaay.net/~langford/owings.html . The plastic I use is just 4 mil "construction plastic" from Home Depot. Unfortunately it's 10' wide folded into a 3" roll, so if you can find some without folds, it's even easier to work with. Maybe that's what Dan has with his 3 mil stuff. I've been known to iron mine flat for critical jobs. I noticed that some of those pictures from the outer wings are from 1998. I was probably thinking I was close to flying then! I know there are those of you that are wondering what my problem is with flying my plane. The truth is that I simply haven't had time to do much more than walk by it and wish I had time to work on it. It's been one thing after another lately, mostly traveling on business (including weekends) or working 12 hour days. With some people, building the airplane is number one priority, but I just haven't had the time lately. One thing about work lately though is it DOES involve building an airplane, as well as engines! I guess I'll finish my plane when I finish it. I am at home this weekend, so maybe I'll get something done. I have a little Champ time scheduled for tomorrow to keep the rust away... Mark Langford, Huntsville, Alabama see homebuilt airplane at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net