edgeflyer

My Feedback: (15)

Can I use super77 to bond thin aluminum to fiberglass ? Should I take the primer back down to bare glass ? Thanks

cutaway

Is this a structural or cosmetic bond? If it just something like gluing aluminum foil fake panels on, gluing to the primer will probably work fine. If it has to take any load, maybe not...

Hydro Junkie

I have to agree, if you're talking a structural bond, strip the primer. What you have to remember is that the glue will only hold as much stress as what it's attached to. If the primer bond is weaker than the glue, the primer will let go and the bond will fail. If it was me in that situation, I'd strip the primer and scuff sand the glass to get a better bond

soarrich

My Feedback: (98)

I agree with what the others said, plus this:
Fiberglass and aluminum will vibrate in different ways, no glue bond will really work. You want to mechanically tie the parts together,rivets, bolts come to mind, but you can use fiberglass to do it too. If you wanted to bond a aluminum rod to the inside of a fuse you could drill a hole across the rod so that glass and resin would get in the hole. Now if the resin bond fails you have the mechanical bonding still holding the rod to the fuse.

invertmast

My Feedback: (23)

super77 has a tendency of relaxing its hold when subjected to high heat as well....

sensei

3M 77 spray adhesive is a temporary spray adhesive only, I don't know what your application is, but if you do decide to go with a spray, brush, or roll on adhesive, you might consider 3M 30NF, it is much better suited for for permanent bond lines.

Bob

ARUP

Do a test with lacquer based contact cement. Methinks it would work well for light structural (your call!) and cosmetic work. That stuff really sticks to itself! I have used it to stick 1/64 ply skins to balsa and ply open structure. You can't get the pieces apart without breaking something.

edgeflyer

My Feedback: (15)

Gluing fake aluminum turkey feathers to the tailcone of my jet.

soarrich

My Feedback: (98)

Go to HomeDepot and get DUCT Tape, not Duck Tape, it's in the heating and air conditioning section. I scratch-built this plane and made a fiberglass cowl for it then used Duct Tape to make it look like aluminum panels.

khelsea

I glue lithoplate to whatever with contact cement. Use a roller to get full contact where you can. Just make sure you scratch it up on the backside and clean well with lacquer thinner and wait for the contact cement to dry " weldwood" when they touch together they arn't comin apart. Just put 4 louvers on each side of my Concept Fleet, came out great. Lanny Khelsea

tenacious101010

My Feedback: (97)

I have found the best adhesive for securing aliminum sheeting to composite is Ganopy Glue. The worst part is it takes a while to try but it works great. I just completed a 100 inch wingspan plane completely covered with aluminum roof flashing from home depot. I was amazed how well the canopy glue worked after testing many different adhesives.
Denny