PC Products PC-11 Two-Part Marine Grade Epoxy Adhesive Paste 4 lb 640111 1

I used this putty in small chunks (every time measuring equal weight of A and B components - use small plastic spoons to take components and a kitchen scale for measuring - then mixing them in a new small container) and it worked very well. I was able to fix a number of holes around my house, and the highlight is a steel patio door that had holes from rust. For this door I first used rust reformer to prevent rust progress, then next day filled holes with this putty, let it harden for a day or two, then smoothed the surface and painted. During application be sure you have plenty of paper towels and several plastic putty knives,. I used WD-40 to moisture and isolate plastic putty from gluing with the putty. WD-40 oiled knife helps with smoothing the putty surface too. Have patience and be persistent in smoothing: it takes good half hour to smooth the surface and get it right. The putty starts hardening after about half hour.

This is a really thick product so you will build your arms up mixing it. But the thickness is good as it won't sag on a vertical surface. I used it to patch up a deteriorating piece in a concrete fountain and it looks like this is the perfect product for that. It doesn't sag, sticks like h*ll, and sets hard. Although the can says 30 minute work time, it really needs about 24 hours to fully set hard. I used a clean 8 oz metal food can for mixing (don't use a plastic cup unless you're mixing a very small amount - it will break when mixing). I highly recommend using disposable nitrile gloves as this tends to get on your hands during mixing. It can be cleaned off tools fairly easily with a paper towel and denatured alcohol.

The product was not what I thought it was, but it is an epoxy based BONDO type filler that looks like it will do well as a sub-base to the inside of my wet area of my swamp cooler in the corners and to smooth out the laps and seams. The ad makes it appear to be a coating material but it is a 2 part paste product that has about 30 minutes of working time at 90 degrees temp. Once hardened after 24 hours, it can be sanded with a electric sander or by hand sanding with no build-up or smearing. It appears to have some limited flexibility once cured, I would recommend this product as lomg as the end user understands that this coating is NOT a two part epoxy paint. But the way finished off the inside of the cooler with bed liner paint.

Sets up quickly so work in small batches. Takes a couple of days to get really hard. Be very careful to mix very VERY thoroughly. Adhesion and prefomance effected by thoroughness of mixing. I suggest mixing with stainless steel putty knives and scraping one against the other to get all the parts mixed thoroughly. With the white it is difficult to judge just how fully you have mixed the parts. If you also get a can of the black, the two parts are black and white, so you can see how much mixing is needed for consistent gray color. Very similar to MarineTex. Mixing is the key. BUT you have to mix fast and apply fast, because after a short while the work-ability goes down. Fill fine cracks first, and have blob jobs to use up the excess.

A tongue depresser is not strong enough to mix part A and B, but can be used to transfer the product onto a cardboard mixing pad. Plastic disposable spatulas can be used to properly mix the pastes if you use it like a snow shovel and scrape each paste from the cardboard. I found it difficult to apply because it is so sticky but will stay where you place it. I used painters, tape along the margins to make nice clean lines of application. I might have spent 1-2 minutes mixing and finished my application within 5 minutes from the start of the mixing. By that time, application was becoming difficult in the shady 55° environment. The total volume of the mixed paste A and B was smaller than of a tennis ball. Great product.