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You can put Bondo in the oven to harden it, for example. So anything that makes it hotter, such as hair dryers, sunshine or heat guns, will speed it up. Conversely, it will slow down if it’s cold out, windy, or anything that cools the heat.
Can you use a heat gun on body filler?
Use a can of etching primer to spray a light coat over the bare metal surface. Use a hairdryer or heat gun to heat the metal surface to a temperature that feels warm to the touch — this will eliminate moisture contact on the metal if the humidity is high.
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.
How long does it take bondo to dry?
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.
Does bondo harden without 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 can I speed up bondo?
You can put Bondo in the oven to harden it, for example. So anything that makes it hotter, such as hair dryers, sunshine or heat guns, will speed it up. Conversely, it will slow down if it’s cold out, windy, or anything that cools the heat.
Will bondo set in cold weather?
I agree, you can bondo in cold weather. It will be easier if you keep the bondo warm (in your house) before you measure it out and use it. Keep the part you are going to bondo in the house also until just before you do the bondoing. The bondo will actually get warm on its own (exotherm) if it is not spead to thin.
Can Bondo go over primer?
A Bondo type of filler, is used for thicker applications, shaping and the like, all the rest is more like primer, the trick for all fillers is to be completely DRY before any type of paint or even primer is put over it, as then it may never dry completely and it then will draw moisture, when it is completely DRY, it Jan 13, 2009.
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.
Why is Bondo bad?
Unfortunately, filling compounds such as Bondo also present some drawbacks. Fillers like Bondo can crack if they are mixed too thickly, harming rather than improving the look of the car. Additionally, there’s a risk of discoloration and poor long-term wear when you use a dent repair filler like Bondo.
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.
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.
Can you use Bondo in the rain?
the moisture will be trapped between the metal and the bondo. something about it yes the bondo will dry out but it traps just enough between the two to cause problems most likely way down the road. there is something about it that makes it harder for the moisure to escape than it was for it to get in.
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.
Why does my Bondo dry so fast?
It’s hotter out, so the inital hardening is going to kick in faster. As was mentioned above, the bondo gets hot anyway, but you’re starting out at a hotter temp to begin with during the summer, so the hardening kicks in quicker.
What is in Bondo?
Bondo, a two-part (resin with hardener added) mix of talc and plastic, was introduced in 1955. It was developed by WWII veteran and automotive repair shop owner Robert Merton Spink of Miami, Florida.
How long does it take for bondo to dry in cold weather?
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.
What happens if bondo freezes?
The bondo will be OK if frozen. Polyester resin keeps very well in a refridgerator, for long term storage. The hardner may not be good after extreme cold.
Is there plastic bondo?
Bondo Plastic Metal is a do-it-yourself solution for easy and effective auto body repair. Fill and seal seams and cracks in metal and other surfaces right from the tube – no mixing required. Plastic Metal dries quickly and is easily sanded, filed, drilled and painted for smooth and seamless repairs.
Do I need to prime before bondo?
Bondo over time absorbs water causing rust to form underneath. It can also shrink over time causing paint to bubble or peel off. If used..the metal must be primed first.
What comes first primer or bondo?
One school of thought suggests bare metal, then Bondo. The other says primer, then Bondo. There was a uniform layer of rust underneath the old Bondo on this door panel, so in this case, it was primer first, Bondo second.
Can you body filler over primer?
Applying body filler over epoxy primer provides maximum corrosion protection for the metal. Apply filler within seven days of applying epoxy primer to maximize adhesion.
