RE: sheeting a foam wing
Well Gray, you and Minn would be welcome in my workshop anytime. In fact the more I think about it, the more I realize that the odds are pretty good that I have crossed paths with one or both of you. In the early 90's I spent a couple years in the twin cities area. Flew at the 3M site, Alexandria and a place towards Shakopee. Used to buy from Maury at R/C City in St Paul and Hub Hobby Center in Little Canada. Up until about 4 years ago I was at every IMAC event at the North Vegas and Bennet fields.
Goirish asked for a pic of my vacuum system. Nothing fancy here but shows all the components and their location