Spraying Varnish

[wapelhj]

Hi,

I've read all the previous posts on Varnishing and how miserable a job I have in front of me.

If you spray the stuff it will also coat the spars. Is this a good thing? What kind of prep for the spars.

I hate sanding and painting.

Jim

[Dave S]

Jim,

Asuming you are using Poly Fiber products...

A long time poly fiber rep I bought my covering materials expalained to me that the epoxy varnish is entirely compatible with the epoxy primer and overlap between the two is a good thing as it best insures a good seal over both the aluminum and wood in the case of the wing.

I prepped the spars, varnished ribs next then sprayed the spars with white epoxy primer overlapping on the ribs..results attached. Maybe not the identical scenario you are considering, but the theory is the same on overlap.

A person needs to keep in mind prep of the surface (whatever the surface material) is essential to assure the epoxy sticks well whether it is epoxy primer or epoxy varnish but the two products are not all that different functionally except for the titanium dioxide in the white primer which gives it the white color.

Sincerely,

Dave S

KF 7 Trigear Flying
912ULS Warp Drive
St Paul, MN

[TahoeTim]

I have one coat on one half a wing left to do. It becomes a sort of zen activity.

I have wondered if it could be airbrushed on?

[Esser]

I didnt find the varnishing that bad. Grab a buddy, pick an interesting topic of conversation and have at er. Do it outside.

[n85ae]

It's an afternoon project with a brush, no big deal. It's easy. You do not need
to be neat, once the fabric goes over, you will NEVER see the varnish again.

Jeff

[wapelhj]

Thanks for the replies.

I guess what I was really trying to say is that if both the varnish and primer are epoxies will spraying the varnish on the spars act as enough protection?

Yes I am lazy.

Jim