flap

Even worse than Id expected, fiberglassing the inside of my Cub cowl, used 4 pcs fiberglass as opposed to the reccommended 2 and still a pain. Landing gear or other simi-flat surfaces are a breeze compared to this.
Good thing this is hidden
Perhaps $34 is a bargain afterall, for a fiberglass cowl.

Live Wire

I use dry wall fiberglass tape. Can be applied in more than one layer has an adhiesive on one side that sticks to mold or inside of cowl. Cut smaller peaces for conture parts then put on resin. Will not sag or raise.

jcflysrc

My Feedback: (50)

Great tip!

rcalfred

Another option is to get a glass fabric called "E Glass". It has a weave the allows it to follow the contours, either concave or convex, very well. A source is www.fiberglast.com. Regards.

MinnFlyer

My Feedback: (4)

Flap, next time try a light shot of spray adhesive on the cowl to stick the cloth to before applying the resin.

flap

Maybe thats where I went wrong, the instructions said to apply the resin before the cloth.
Will there be as good adhesion by applying the resin through the cloth??

JetAwithPrist

Not sure what you were using but a lighter wieght (as in thinner and finer) is a lot easier to apply around small spaces and tight contours. Fiberglass that resembles something you'd get from autozone is tough in small spaces.

Live Wire

Plastic cowls , Glass cloth will stick with small amount o acetone applied to surface . Apply cloth rub cloth to stick. Cloth will stick as long as material has full penetration changes from white to clear or transparent. To much adhesive will act as releasing agent.

Phil69

I want to glass a plastic cowl for my Cub too but the fit is already a little tight and I was wondering about glassing it externally.
Would that be somewhat easier ?
I would then sand/prime and paint.

P.

flap

Phil69, I really wouldnt advise trying to glass the outside, it would take a great deal of work to make it look decent, after you glass inside, youll see what I mean,
Mine fits snug also, just use a thin coat of resin where it joins the fuse, should be ok, if not, you can touch it up with sandpaper fairly easily.

Phil69

Flap, thks for the advice.

Another question: do you recommend cutting the holes for the shaft, exhaust, cylinder head, etc... prior to glassing ?

P.

Live Wire

Since you are glassing the inside . Precut all openings before glassing . Will be easier to trim and finish. No extra material to cut through. Can finish edges after final cut.