Finishing the Acro
Just another progress picture. Covered the Acro wing last night with Polycover transparent yellow covering from Hobby Lobby. This stuff is great! It is low temperature and high temperature. You tack (laminate) it onto the bare balsa (no Balsarite required) around the edges, and then shrink with high heat. No heat gun required-just an iron with a temperature dial. But here is the thing. I am lame at covering. Monokote drives me crazy because it is always full of sags and wrinkles when I use it. I realize there are some people out there that can accomplish a perfect covering job with Monokote, but I am not one of them.
I bought a roll of Oracover a few years ago on sale-probably at a swap meet. It was fluorescent orange. I finally used it to cover my Skyray 32. And it was great. But it was first generation Oracover made in Germany and no longer in production. And I ran out of it halfway through covering the wing on my Clowniac.
So I went to the Hobby Lobby website to find some more. It turns out the name has been changed to Polycover. Polycover is the third generation of Oracover. And now it is made in England.
Well I covered my Acro wing last night with Polycover. It is fantastic! This is the covering I have been dreaming of all these years. It actually looks like I know how to use iron-on coverings. And it is a very light finish because there is no paint under or over the covering. And the covering itself is very light.
I had to change my finishing plans for this plane. The instructions for the Polycover state that aircraft dope will not adhere to it. One must use epoxy, polyurethane, or auto acrylic paints to get adhesion to the Polycover. So I am using Olympic (I bought it at either Home Depot or Lowe's) water based gloss clear indoor polyurethane for the sealing coats for this finish. Two coats should do it.
I am posting a picture of the Acro with the Polycover on the wing and a coat of polyurethane on the balsa and the edge of the covering inside the masking tape.
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