Bondo Not Hardening

Bondo fiberglass resin is sandable in less than 2 hours is compatible with all paints and creates a strong and long lasting bond. The cream hardner is for bondo duraglass not fiberglass resin that is use with fiberglass cloth which you use mek hardner with. In theory bondo and resin should harden eventually without any catylist which is really an accellerant to the process.
bondo not hardening

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Chances are you did not add enough catalyst the chemical that hardens the resin.

Bondo not hardening. At 70 degrees it should be dry in less than 2 hours its benn 14 hours now and this crap is still wet. With bondo and all polyesther products the catylis causes heat and speeds up the harnening process. Everything is curing great then i do a top coat and some not all of my pieces are turning cloudy just on the very top after letting it cure overnight and then in the toaster oven on about 150 for a few hours without touching it. This stuff is kinda soft and tacky on top and then when i sand it its harder underneath but still i can dig my nail into it with a bit of pressure.

But lately ive been having trouble that i cant figure out. There are few things worse than having finished a large project using fiberglass only to not have it fully cure. That said ive never seen it get hard without some hardner. Not mixed peoperly would be my number one was the container round or square.

But yes the temp is a big factor with that stuff skull. After much searching around the web ive found multiple tricks when used in order can help save your piece. Choose between bondo fiberglass resins bondo fiberglass repair kits or bondo body fillers. You let it sit and sit and sit but it never completely hardens.

I use resin obsession brand for my business and love it. I remember bondo hardening rock hard after 15 minutes. Im definitely a novice pep er but ive recently had a problem with my resin not hardening on my project. Its 2 part filler 3m.

Hit your piece with a heat gun see if you can get your resin to really bubble and. Diy how to bondo auto body repair tips and tricks to prevent common problems with body filler duration. Car addict garage 1234657 views. Because they do not shrink they are excellent sealers.

Am i going crazy here or should i not be able to dig a fingernail into it. Must be bad hardner or maybe the wax but the wax if not used will only cause a sticky film and it still will harden. Round containers the catalyst can and does go up the sides and cling when you stir square containers the catalyst does the same but the 4 corners never get mixed properly and its quite hard to do a 100 mix in a square container. Bondo fiberglass resins and repair kits are 100 percent waterproof.