ORIGINAL: Pa-18cub150
Ok maybe I have some unrealistic expectations for my first covering project with Momokaot.
I have managed to burn a hole in my elevator with the heat gun
, and now I cant get the patch to pull up tight[:@].
Don't patch. Remove the covering, and start on a fresh, clean surface.
It also seams that every time I apply heat with the heat gun,I get more wrinkles that run the long way of the parts (like a washboard). Am I getting things pulled to tight lengthwise, or not tight enough the short direction when I am tacking down the film?
Another good reason to use an iron for shrinking, after getting the edges ironed down without wrinkles. Avoid the gun.
Is it possible I have gotten things two hot and they will not shrink up correctly?
Yes
Is it possible to over work the covering or can I keep going over it to work out the washboards?
Yes, it is possible, no, you probably need to do something else to get rid of the washboards.
Should I work the heat gun from small area’s to larger area’s, or from the center out?
Get the edges down smooth, slowly, a bit at a time, then slowly go over all the wood, getting the covering stuck down everywhere with minimal wrinkles over the open bay areas. Then tighten the covering up gently with heat from your iron.
I would like to get this figured out before I start on the fuselage and wing[sm=confused.gif].
I have one more question but I am reluctant to ask for fear of starting the old Ford, VS Chivy, VS Chrysler argument.
Are all plastic film covering created equally? Do some coverings have advantages or disadvantages over a competitor’s product? I am not asking what the best product is. I am just wondering if some products work better for some situations and not as good in others.
Low temperature film (Ultracote, Oracover) uses an adhesive that doesn't gas. You can put covering over covering, iron it down and no bubbles appear sandwiched between the film. Monokote uses a high temperature adhesive that gasses when heated to the recommended temperature. I find that problematic when putting Monokote over film or sealed wood.
Good luck,
Dave Olson