Table of Contents
How do I get a smooth finish with 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 grit sandpaper should I use on Bondo?
First step: Prep the Surface Before applying, paint needs to be sanded to the bare metal. Make sure to sand outside of the repair area as Bondo will need to be spread and applied wider than the damaged area. (36-grit to 220-grit should do the trick for body filler application).
Can u wet sand Bondo?
Don’t wet sand filler. Filler is too absorbant and you can have problems getting it dry plus you could cause moisture to wick through to the metal or weaken the bond between the filler and the substrate.
Can I use an orbital sander on Bondo?
This 6 inch Electric Random Orbital Palm Sander by Bondo uses both a random circular and elliptical pattern in a tight 3/32 inch diameter orbital. Once you see the marvelous results, this sander will be your first go to tool on all the projects. For best results, use with Bondo body fillers and 3M sanding discs.
Can you put body filler on Baremetal?
For small repairs, you can bog directly over the bare metal. If the repair is larger, or you’re looking for a longer-lasting job, apply a base coat of epoxy primer before laying on the filler.
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.
Does Bondo need to be primed?
Registered. Yes priming it would be best.
Should spot putty be applied very thick?
Filler should not be applied more than 1/4″ thick, any more and there is a risk it will crack. With that said, any damage less than 1/4″ deep may not need to be hammered out. 3. Sand the area about 5 inches on all sides of the dent with a 80 Grit Sanding Disc on a DA Sander.
Does body filler absorb water?
If you check the MSDS on these products you will see that they still have talc, just like “regular” fillers and WILL absorb water. John, you really shouldn’t be applying that Picklex around the filler, it is bound to get under it and cause big problems.
Does body filler absorb paint?
Can You Body Filler Over Paint? In addition to steel, aluminum, galvanized metal, fiberglass, and SMC, Evercoat fillers are designed to work over bare, properly prepared substrates. It is normal for filler and puttie to work OK over OEM paint that has been properly sanded (80-180 grit).
Can I use an electric sander for auto body work?
orbital sanders are great tools for anyone who is interested in woodworking, automotive detail, or just wants to buff and sand different materials. They are commonly found in garages, woodshops, and auto body shops. A random orbital sander can be used to polish your car.
What kind of sander do you use for auto body?
There are two primary types of sanders for cars: air sanders and hand sanders. We’ll be focusing specifically on air sanders in this article. Orbital sanders are powerful air sanders that are ideal for light prep work, such as smoothing edges and sanding down old coats of paint.
What is Ada sander?
Dual-action sanders attempt to combine the best aspects of both types of sander. The sandpaper pad moves straight forward and backward, mimicking the belt sander’s linear action, but is also moves in a slightly rotary motion–sometimes with a random orbital motion rather than a purely rotary one.
How long should Bondo dry before sanding?
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.
Do you have to use hardener with Bondo?
How Much Hardener Do You Add To Your Body Filler? You need to be sure to add the right amount of hardener to your Bondo; adding more than enough will cause your body filler to dry faster and give you less time for shaping and laying your filler on your panels.
Should Bondo be applied to bare metal?
Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. The paint should be sanded off, to the bare metal, and then apply the filler. A 36-grit to 180-grit surface is ideal for body filler application so that the filler has a good rough surface to grip.
