TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Quart, Slow Hardener, Pumps)

Great price for a great product and seems to use less product than other name brands to do the same size repair

Nice and workable but definitely order more than you think you will need.

A+++

Would buy again

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.

I am a hobbyist and glass RC airplane wings and high power rocket bodies. Very very good epoxy and will continue to buy!

this stuff is easy to work with and has plenty of pot life. i did the bottom of a wooden boat with a size roughly 24”x15’.i did that same area on the other side of the keel.the gallon size came up short but the matting i used was really think.i had no problem mixing 5 batches for each side. no dry or hard spots as the pot life was long enough to smooth it all out.

The media could not be loaded. I used 1 and half quarts to do these glass over foam outriggers for my kayak.The epoxy wetted out the 6 oz woven clothe really well and the included pump system made measuring so simple even a cave man like me could do it!Cure times listed in the instructions were spot on when i did it in a heated shop at 75 degrees.I look forward to my next project of making a foam and glass mini skiff with this!I highly recommend this product!