5:1 Epoxy Resin Kits, Marine Grade Epoxy for Fiberglass and Wood Boat Building and Repair Quart 365248 1

The TotalBoat 5:1 Marine Epoxy Resin Kit delivers professional-grade results with absolute ease.Why This Kit Stands OutPerfect Pouring: Included calibrated pumps eliminate all measuring guesswork.Flawless Finish: Cures crystal clear without cloudy blemishes or amber tinting.Zero Bubbles: Smooth consistency allows trapped air to escape easily during mixing.Ample Working Time: Slow hardener provides plenty of time to position complex layups.Rock-Hard Cure: Creates an incredibly strong bond that sands beautifully after curing.Complete Package: Mixing cups and wooden stir sticks are included right inside.Highly recommended for boat repairs, woodworking projects, and fiberglass laminating.

Great product. Easy to use. Covers nicely. It has been 6 months in the sun and so far is holding up well. Strong

First, I'll discuss mix ratio - advertised as 5:1. That's confusing, because the bottles say 2:1 -- Here's the answer: Each stroke of the plunger in the hardener bottle will dispense one "unit" of hardener. The plunger in the resin bottle is larger - it dispenses 2 1/2 times as much per stroke. So 2 strokes from the resin bottle is 5 units, while one stroke from the hardener is one unit -- result: 5:1. Now to the performance issues I have: First, the hardener bottle is for "FAST" hardening, although the description on the Amazon posting shows and says "SLOW" hardener. I prefer FAST, so no complaint - but it doesn't match the advertisement. I"m repairing the engine hatch on my boat, which has edge damage due to water intrusion into the plywood around the edges. I removed the old gelcoat and the rotted plywood, applied a coat of mixed "Total Boat" epoxy to both the original fiberglass edge of the hatch and to the surface of the replacement new 1/8" marine plywood, which i had rough sanded to get good adhesion. I clamped the plywood against the original fiberglass edge using multiple clamps (see attached photos), and waited. The next step would be to cover the plywood strips with fiberglass cloth, then sand, add a fairing compound, smooth, and gelcoat. I haven't gotten that far. After 4 days at 70 degrees, the epoxy was still tacky, so I heated the area with two space heaters, to accelerate the hardening. 30 minutes later, the resin started dripping out onto the table! Removed the heaters. Now it has been 5 days, and the epoxy has returned to the tacky stage. The overall repair of my hatch will require a lot more epoxy, since i will be replacing all of the original plywood in the rest of the hatch. That will require 4 layers of fiberglass cloth, so I bought two "Total Boat" epoxy kits -- neither of them returnable. I've used a very small amount of the first kit. I cannot afford to wait a week or more between coats (assuming this stuff ever hardens) - so it's going on the shelf and I'll order a name brand replacement kit.

plenty of pot life to lay this up into a mold and vacuum bag it. after 3 hours, excess resin in my cup was hardened solid. no issues with cutting the length for the spout supply tube. temp in my shop was 70°F.

I liked the packaging that included the pumps to get the correct ratio into the supplied mixing container. Very tidy way of measuring and mixing. Epoxy does what it is supposed to do.