not enough hardner

I'm trying to make a fiberglass mold for a subwoofer and I didn't add enough hardner to the resin I let it sit over nite (roughly 8 hours) and it is really gooey.  Is there any way to get it to harden up without messing it up.  I need the box to as structurly sound as possible, because the subwoofers are really powerful.  Do you think it would be best to just rip it all out and start from scratch? Don't Ask Questions When You Already Know The Answer!!!

what is the resin sitting on, tape?  Pictures would be cool, I always like to see pictures.  But anyways, try a blowdryer on high heat.  If there is hardener mixed in there it should take over once it is heated up really good.   If that doesn't work, then mix up some resin with a shhhload of hardener in it and slap it on top of the other resin and that should take care of it.  Then you can continue with adding mat/resin layers.  fiberglass reminds me of peanut brittle... but fiberglass tastes better!

If heating it up doesn't harden it, scrape off what you have and start over. Adding another layer of "mixed hot" glass will not fix the problem, only compound it. What is the temperature of the room that the project is drying in & also the humidity levels ? Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

It's cold probly in the 40's to 50's.  Humidity is in the 30 to 40 percent range, I live in missouri.Don't Ask Questions When You Already Know The Answer!!!

thats your problem!  you need heat. get that room to around 60-70 and it will be fine.

If the fiberglass is still soft to the touch after heat is applied, scrape off what you have and start from scratch again. Bring the project into room temperature for about 6-8 hours and if it still doesn't harden then I'd say it's a lost cause. Making an enclosure and ensuring that the walls are hardened properly is a very important aspect.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

I tryed heat and got no where, so I scraped it.  I'll just start from scratch next weekend.  I'll be sure to put some pictures up of my progress.  Thanks for all the help anyways.  Next time I'll be sure to keep the warmer and and more hardener. Don't Ask Questions When You Already Know The Answer!!!