Extending glue setup time (or alternatives to hot-glue)

[Inq]

I need to glue down DT foamboard wing skins onto ribs. Skin is about 30"x8". There is about 130" of hot-glue path. I'm pretty sure with my marginal dexterity and aiming to hit 5mm thick ribs that I can't lay down that much hot glue before it has already cooled on the starting end. Are there any tricks? Different glue maybe?

 

[luvmy40]

I would think Gorilla Glue would be better than hot glue in this scenario. Brush a light coat on the spars and the peeled foam board in the contact areas, mist the peeled foam board lightly with water, wrap the skin and clamp the leading and trailing edge with light weight spring clamps and scrap FB. I've not tried this before, but I know quite a few people here use the Gorilla Glue instead of hot glue for their builds.

 

[Piotrsko]

There are hot glues that work with extended dwell times like up to 2-3 minutes. They are heavy and very pricey. Gorilla glue or any polyurethane based glue is lighter and cheaper. Some times I use the cheap tube of liquid nails. There is also contact adhesives, but you get one shot to be correctly aligned.

I suggest the gorilla glue, but you'll need to hold the assembly in place during cure

 

[Inq]

I'll do the Gorilla glue. I'll have need to adjust trying to put some wing twist in it. It'll give plenty of time.

 

[Inq]

I would think Gorilla Glue would be better than hot glue in this scenario

I suggest the gorilla glue, but you'll need to hold the assembly in place during cure

The Gorilla glue is going to work perfectly. It gives me plenty of time to place and adjust the skins. The twenty-four hours tests my patience; but, I'll adapt. I'm still a little messy, but it doesn't show and it doesn't weight near as much as the globs of hot glue.

https://forum.flitetest.com/index.php?threads/inqd-trainer.71134/post-733598

Thanks guys!

 

[Tench745]

The regular, brown, Gorilla Glue is good if you need a long working time. White Gorilla Glue cures much faster and has the added benefit of being white when dry.

 

[Inq]

The regular, brown, Gorilla Glue is good if you need a long working time. White Gorilla Glue cures much faster and has the added benefit of being white when dry.

The brown's long setup time is helping. Once I applied the skin, I had to get it in a jig and weight it slowly to get the right washout twist. Lot's off fidd'n around.

I've never used the white GG. I always assumed it was an Elmer's, water based equivalent. Is it... or is it a polyurethane formula also?

 

[Tench745]

The brown's long setup time is helping. Once I applied the skin, I had to get it in a jig and weight it slowly to get the right washout twist. Lot's off fidd'n around.

I've never used the white GG. I always assumed it was an Elmer's, water based equivalent. Is it... or is it a polyurethane formula also?

It's a foaming polyurethane glue just like the brown, but the cure time is around 30-60 minutes. Dry time is affected by humidity.

 

[Piotrsko]

You can not get the mating parts damp, or assemble it dry, put it in a baggie, then it takes longet to cure. Cold delays curing also. Ive been known to assemble in my garage in the winter wearing a heavy coat.

 

[Inq]

I'll keep those tricks in mind. Thanks.