Table of Contents
Can you use Bondo without the hardener?
Without it the bondo won’t get hard. Put a small piece of bondo on a board and run a line of hardener from end to end. It will take about five minutes to mix it up and apply it. If it starts tacking up, stop applying it or you’ll mess it up.
How long does Bondo take to harden?
Allow the putty to dry 15 minutes at 77 degrees F (25 degrees C). In cooler climates, putty may take 20-30 minutes to dry. 7. Using 3M™ Sandpaper 80 grit, sand and shape the filled area to the contour of the surface.
How long does all purpose Bondo take to dry?
Bondo mixed to the color swatch will begin to cure in less than 10 minutes at room temperature. Too much hardener in a warm environment will reduce working time, but too little in a cool environment can result in maddeningly long curing times. A heat lamp can speed curing in colder weather.
How do you keep Bondo from hardening so fast?
It’s actually too hot to use bondo right now. Use a fan and stay in the shade, as you say, inside. Try mixing smaller batches using only a spot of hardener then work up to maybe golfball sized gobs of Bondo and a 1/2″ ribbon of hardener. Do it early morning or later in the evening till the weather cools down.
Why is my Bondo still tacky?
It could just be the skim on the top that stays sticky. Some lower quality fillers don’t have the additives required to stop that from happening. Try sanding it, if it remains soft and clogs your paper after that first top coat has been removed then you need to take all off.
What happens if you don’t put enough hardener in body filler?
Adding too much hardener will result in rapid gelling of the mixture, making it hard to get coverage in time. Too little hardener will increase cure time, but there’s a point where the filler won’t ever harden and you won’t know it until you try to sand.
How long can you leave Bondo unpainted?
Between life and work, the longest time period the bondo would go Unpainted would be about 2-3 weeks.
Is Bondo waterproof?
Choose between Bondo Fiberglass Resins, Bondo Fiberglass Repair Kits or Bondo Body Fillers. Bondo Fiberglass Resins and Repair Kits are 100 percent waterproof. Because they do not shrink, they are excellent sealers. Bondo Ultimate can be applied directly over sanded and cured primer and paint.
Can you paint over body filler?
Fillers and putties will normally work OK over properly sanded (80-180 grit) cured OEM paint. However, with so many different types of aftermarket paint available (lacquer, enamel, urethane, water-based). We recommend that all paint be removed where filler is to be applied.”Nov 3, 2012.
How long does it take for Bondo to dry before sanding?
Bondo mixed to the color swatch will begin to cure in less than 10 minutes at room temperature. Too much hardener in a warm environment will reduce working time, but too little in a cool environment can result in maddeningly long curing times.
How long does it take red Bondo to dry?
like everybody else said, it all depends on the amount of catalyst hardener you put in. When I had a small bowl of it and mixed a penny size amount of hardener, the bondo would take about 15-20 to dry but about 5 minutes to start hardening.
What temperature should I apply Bondo?
Bondo said: FREQUENTLY ASKED QUESTIONS (FAQ) What is the lowest temperature that body fillers can be used in? 45° – 50°F (7° – 10°C); if using below 65° F, the amount of hardener used should be slightly increased. 12/2/14 4:07 p.m. Bondo says 45-50 degrees.
What happens if you put too much hardener in Bondo?
If you add too much hardener, the mixture will gel too quickly. If you add too little, it increases the amount of time for it to cure, and if you don’t add enough it will never cure. If you add 1 line of hardener across the top of the dollop of Bondo, it takes about 15 minutes to dry after applying.
Can you add color to Bondo?
You can tint BONDO with paint tint. Use small amount to start, just a few drops, mixed in before you add the hardener, to get the color you want. I have used this for years, long before it hit the stores for damaged wood repair!Oct 20, 2015.
Can you use old Bondo?
If it is a few months old it should be fine. just mix it up real well. Go ahead and use it, it will definitely be fine.
Can you sand tacky Bondo?
You can go ahead and sand it. If it clogs your paper after you cut through the outside sticky “Film”,,go ahead and strip it off and start over. You didnt put enough hardener in it.
Can I put Bondo over rust?
Body filler is not good for rust repairs. You cannot slather some Bondo over rust and expect it to stop the rust or stick to it for that matter. If there are holes in the metal, you are much better off cutting it all out, patching it with new metal, and then working the body filler from there.
Will Ronseal wood filler go hard without hardener?
Wood fillers can be used to reinforce softwoods or rotten woods structurally. However, this is usually only a stopgap without using a hardener as well. You can use both in conjunction to save ancient, fragile woods. For normal use, the wood filler should suffice.
How much hardener do you put in body filler?
What is the mixing ratio for body filler and cream hardener? A. Use a golf ball size amount of filler and use 5-8 drops of hardener or about and inch and a half strip of hardener.
How much hardener do you put in Bondo?
2. Place the proper amount of Bondo filler and hardener: 50:1.
