I've done a lot of fillets with epoxylite, it's strong and hard to sand, some micro balloons added helps some. But I've got some of this blue superfil and would like to use it if it's as strong as epoxylite, and maybe easier to sand....and lighter. Anyone have experience in this area?
Thank you,
dale gleason

Night and Day. SuperFil, hands down. It's easy to work with. easy to level. easy to sand and more compatible with finishes. Lower rate of bubble in paint over the fillets, too.

Who sells the Superfill ?

I've used both and always found Epoxilite difficult to sand and sometimes problematic if the material has been around the shop for awhile.  Heating the components and making sure they are stirred well is important.  Superfil works really well and the point about making sure it is well mixed before blending the two together is a must.  The only problem i have with Superfil is the somewhat dryness of the mixed components.  Add Aeropoxy Lite to the list of products to use for fillets.  Strength is between the two previous products and the working texture of the mix is just right.  Here is one that it is absolutely imperative that the two components are thoroughly mxed prior to measuring and mixing.  The reddish brown component is especially good at seperating and really nneeds a good mix prior to use.  Available from Aircraft Spruce and other sources.
Alan Resinger

I don't understand why people still struggle with epoxy for fillets.  Leather is ever so much easier to use, and it comes in several sizes.

Floyd

I don't understand why people still struggle with epoxy for fillets.  Leather is ever so much easier to use, and it comes in several sizes.

Floyd

Because it provides very little strength. You end up have to epoxy the wing in anyway and then add the leather fillets just for appearance. Epoxy fillets are very strong and look great with a little practice.

Besides, leather is for holsters and saddles, not model airplanes.

>>Who sells the Superfill ?<<

It's made by PolyFiber.

http://www.polyfiber.com/epoxy/

I agree that getting a good fit is important. I usually run some glass or something along the wing/fuse joint on the inside just as SOP. I like Superfil because is goes on easy, is easy to get the fillet looking very good before it cures, it's easy to sand compared to other fillet products and accepts finishing materials very well. Just one less headache to worry about.

I'm still not making myself clear, I guess.  My question is.....which is structuraly the stronger of the two? I've always used epoxylite, no worries there, mate, except if superfil is about the same strength, it is somewhat lighter so I might give it a go.

I was a little concerned yesterday as the stuff wasn't curing, but the destructions said it should be at least 72F, so I placed the machine in a warmer environment and it cured nicely. Sands much easier than epoxilite.

I've decided to do the wing fillets as in the past, with epoxolite, and the fillets on the tailfeathers shall be superfil. Time will tell.

Again, thanks,
dale g