Can you sand down bondo?
Once the Bondo cures, it’s time to sand. Power sanders are OK to break the surface and knock down any high spots, but hand sanding with the body contour is the best way forward. The lightweight Bondo Gold is far easier to sand than the heavier type, so consider using the good stuff on the way out.
What grit sandpaper do I use for bondo?
Use 60 to 80 grit paper to sand down below rust, deeper scars or to sand down and begin to shape body filler, such as bondo. These are very coarse grits and should only be used in specific areas where you really need it since it will leave sanding marks.
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.
Should you prime before body filler?
Do not proceed to Primer Filler stage until filled area is even. Adding body filler AFTER primer filler should be avoided to prevent possible adhesion, staining and shrinkage concerns.
How long does it take for Bondo to fully cure?
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. 4.
Can I Bondo over rust?
To Bondo or Not to Bondo Minor surface rust can often be sanded and painted, but major rust pitting and holes may require a little more effort and material — specifically, Bondo or some other quality body filler. However, Bondo shouldn’t be used on every kind of rust hole.
What happens if not enough hardener in bondo?
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 can Bondo be left unpainted?
Between life and work, the longest time period the bondo would go Unpainted would be about 2-3 weeks.
What kind of sanding to use on Bondo?
Once the Bondo cures, it’s time to sand. Power sanders are OK to break the surface and knock down any high spots, but hand sanding with the body contour is the best way forward. Cut in with heavier grit sandpaper and work out to about 80 grit to leave a tooth for the following skim coats.
What can Bondo be used for in a car?
Bondo is an automotive body filler, often used for car and household repairs. You can use Bondo to fill in small dings and smooth out warped panels in a car body. Before you begin applying Bondo, make sure to sand down the paint, replace any rusted metal, and mask off any areas that don’t need filler.
Which is the best way to apply Bondo?
Load up your spreader with some Bondo mixture and scrape an 1⁄ 8 inch (0.32 cm) layer over the damaged area. Press down with the spreader to push the filler into the metal. Keep applying thin coats until all the dings are filled, up to a total thickness of 1⁄ 4 inch (0.64 cm).
Is the brand Bondo a registered trademark of 3M?
A brief qualification: Bondo is a registered trademark of 3M and just one of the myriad brands and types of polyester body fillers.