On fillets I add micro balloons to epoxy as filler. It helps keep it from dripping a bit until it starts to harden. I use 5 min stuff.

William I think you meant LIQUID NAILS?? I have used Lepage PL400 construction adhesive building a full size swamp boat that had the seams sewn together with 14ga base copper electrical wire. No seam problems in 7yr altho the entire boat flexed quite a bit.

Currently i am using PL PREMIUM building a Zippkits SPRINGER tugboat. 18" long, 8" beam. The caulking gun is longer than the model but i am still managing. At a premium price I cud hav bought construction adhesive in an 8" tube, might have been less awkward.

I use Gorilla for the laminated parts

I use 5min epoxy for things like stuffing tube & rudder sleeve that run thru the hull & are dissimilar materials. I buy mine at the Dollarama

Just my 2 cents worth.

Epoxy has superior adhesion and 20% give, so it works very well on wood.
Even though it is expensive the cost is minimal compared to the overall cost of the boat.
Not to mention the time involved in construction.
I have used epoxy on full sized boats for many years, with great results.
Trev

Agree with Neal most will have their prefered glues and epoxies but experiment on scrap to find out what works best for you. Keep asking questions this site is full of builders willing to help.
Rick

I’d be worried about the adhesion and brittleness. The epoxy fillet helps to reinforce the joint and adheres to timber.

The best idea would be to mock up a joint and apply hard as nails as a fillet, let it cure then try and flex the joint to see if there is any movement or loss of adhesion.

I’m fortunate to have a load of epoxy and various additives for the full sized restorations I do, so I use West Epoxy with a 205 fast hardener, I’d always add some filleting blend to bulk the epoxy up to stop it slumping.

Epoxy isn’t cheap but you can get small tubes of the stuff in a blister pack that can be used for small fillets, though you might need a few packs.

So my advice would be to try it on some scrap timber and see what happens, I would however recommend using epoxy for filleting.