J-B Weld 50172 25 ml MarineWeld Syringe

I used JB Weld Marine to repair a chip on the lower unit of my boat motor, and it worked great. The application was straightforward, and it adhered very well to the metal surface. After giving it proper cure time, the patch held strong and smoothed out perfectly. It's been through several outings on the water since the repair, and it's held up without any issues. Highly recommend for anyone needing a quick, reliable marine-grade fix.

Works great.

Have used in past with good success.

I bought this product to fix a small part of my fiberglass shower floor that had a crack/chip in it. After sanding and cleaning the area, I taped off a nice square part of it and mixed this epoxy up and laid it down with a very tiny paint brush. After all was said and done the patch is nice and strong and barely noticeable unless you know it's there. The only reason that I gave it four stars instead of five is because I found that in my case the drying and curing time took significantly longer than what was listed on the package. This is a great product you just have to be patient with it, and I would say give it a minimum of 24 hours before you touch the patched area.

I’ve always had good results with JB Weld products and this is no exception. The 3rd party testers always rate JB Weld high on the video platforms. For my project, I was using this epoxy to fill small screw holes in white gel coat on my boat. These repairs were not visible, so I wasn’t concerned with color match. Using this product along with the JB Weld mixing nozzle gave me the precise control I needed to fill the holes without making a mess. A little sanding after the epoxy cured was all that was required. The putty epoxy also works well for this kind of filler repair. JB Weld makes that as well and it’s easy to use.

I used this to fix a few holes in my paddle boards. Worked perfectly.

I’ve been using JB Weld products for many years now and can say that they are really convenient to use and most of the time, do the job of repairing metal just fine. The latest project was on a cast iron leg on an old coal/wood stove that I have outdoors under a patio. One of the metal legs was cracked at the mounting point where it attaches to on the bottom of the stove. The cast iron legs hold the stove about 6 inches off of the concrete pad. I used the metal epoxy to hold both sides of the cracked portion together and let it cure for a day. So far is looks like the repair worked. I have used JB Weld for other repairs as well and have had good luck using it most to the time. It is a cheap option and even if it doesn’t work, it was worth taking the chance it would hold.

Tried patching dremeled out chip in boat gelcoat. Had rubbery feel that would not Sand Smooth after 24 hours. Not hard after 30 hours. Was kind of pissed off, but it got hard enough to sand after 48 hours. Dries white white, that was not a match to maybe my oyster white old boat gel coat. ... I am switch to JB Weld Marine Putty, and some other products for my gel coat patching.