🛠️ Fix it fast, fix it right—waterproof your world with 3M Bondo!
3M Bondo Liquid Hardener is a professional-grade, fast-curing additive designed to activate Bondo polyester fiberglass resin and metal reinforced fillers. With a quick 20-minute cure time and 100% waterproof results, it’s engineered for durable repairs on auto bodies, boats, and home fixtures like tubs and sinks. Its easy mixing formula ensures a smooth blend for efficient, long-lasting fixes trusted by industry pros.
| Brand | 3M |
| Specific Uses For Product | Wall Repair, Masonry |
| Material | Plastic |
| Compatible Material | Fiberglass |
| Item Form | Not Aplicable |
| Special Feature | Fast Curing, Waterproof, Durable, Efficient |
| Color | Transparent |
| Item Package Quantity | 1 |
| Package Information | Tube |
| Item Volume | 11 Milliliters |
| Full Cure Time | 2E+1 Minutes |
| Water Resistance Level | Waterproof |
| UPC | 076308009120 |
| Number of Pieces | 1 |
| Global Trade Identification Number | 00076308009120 |
| Manufacturer | 3M |
| Model | Bondo Liquid Hardener, Use with Fiberglass Resin, 0.37 Fl oz, 1 bottle |
| Item Weight | 0.64 ounces |
| Product Dimensions | 8 x 5 x 1 inches |
| Item model number | 912 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 912 |
| Special Features | Fast Curing, Waterproof, Durable, Efficient |
O**M
Get this if you need to set (harden) fiberglass resin or putty.
Good stuff to have extra on hand for sure. Had to use it to make up for some hardener that I was lacking in my fiberglass resin putty stuff cuz I used it all up too fast. 😬
J**E
Calidad 3M
Buen producto
G**S
Bondo hardener
Just an extra tube
R**D
not cheap
but a $1 cheaper than AdvanceAuto
M**N
Carr go wrong with condom brand
It worked properly cured my fiberglass just as it should
D**K
Just what I needed
Perfect
K**A
It works!
Used to help repair above ground swimming pool wall
B**W
Great find, must have for fiberglass work.
Life saver. The tube you get when you purchase a can of fiberglass resin is not nearly enough to activate the amount of resin (typically a 32 oz can). I tried using the number of drops recommended and ran out of hardener by the time I was halfway through my resin and that was with conserving the drops towards the end. Without this I would have had to either buy an entire new can of resin (a real waste) or toss the half can of resin I had left. This saved the day (and the resin). A must have for anyone who does fiberglass work.
Trustpilot
1 month ago
2 weeks ago
