Auto Body Repair Technicians Sand and Paint the Car's . OPTIONAL: Scuff Epoxy with P120-P180 grit sand paper or red scuff pad. Which is the best method or does someone have a better one? Full gas tanks - body filler is flammable, and only resistant to gas once it is cured. Simply just spray the etch from a bottle onto your panel, hit it with a sanding pad or wire brush to knock down any big pieces of rust, wipe away, and you will be left with absolute cleanest metal. Jun 24, 2005. Apply filler within seven days of applying epoxy primer to maximize adhesion. Its like a Klenex tissue, every tissue is a Kleenex but not really, its just the brand. You CAN apply over sanded 2k primer, or bare metal. Now I'm throwing down a little filler on some low spots. NOT ONLY NO, BUT HELL NO! Be sure to have the area sanded with at least a 150 so the filler has some TOOTH to grab to. Apply enough of the epoxy to a piece of fiberglass fabric that the fabric is soaked, then press the fabric into place over the hole, so that it closes the hole and creates a new surface. Most, or probably all, filler manufacturers design and recommend them to be used over clean and prepped (sanded with . Like every body filler is Bondo, but that is just the brand. When using a one part body filler like Lab-metal or Hi Temp Lab-metal, you can simply allow the repair to air dry, sand smooth and powder coat. POR-15 fillers are paintable non-shrinking professional-grade products that are easy enough to use for DIYer projects. Sandblasted to bare metal, but there are rust pits and small dents in the bed floor. So for example look for filler that is easy to mix. I'm finding that when I sand the self etching primer away in spots as I feather edge, I'm seeing tiny rust pits and small rust spots. I used rust encapsulator on the frame and axles of my truck after sandblasting 10 years ago and nothing came back through. The article details what is needed for rust to form and stresses that body filler is not the culprit. I plan to spray in bedliner, so the rust pits shouldn't be a problem (I hope), but I can't pull some of the dents because of the bracing underneath and the thickness of the metal. Eastwood offers a metal etch that will get into those tiny cracks and eat away at the rust in those pits. 5. Is there a filler anyone would suggest that would hold up under bedliner on a pickup floor? 1) Use JB Weld and file and sand or 2) To use lead then file down and 3) To use use multiple primer powder coats to build up and fill and sand with 360 grit wet/dry between each primer powder coats before applying the finished color powder coat. I use Evercoat Tiger Hair a good bit. Body filler alone won't seal out moisture the way a dedicated product like Rust Encapsulator does because it is porous. It reaches even inaccessible areas, quickly dissolving iron oxide completely and leaving a zinc phosphate coating. Use the stick to scoop a golf ball-sized dollop of the body filler out onto the cardboard. Some restorers believe filler primer is little more than liquid body filler. If rust has thinned or eaten through the panel, then the Bondo needs a backup. Once the metal is smooth, it needs to be protected to prevent further oxidization. The goal was to get down to the metal, take a measure, and scuff the repair area back out to 60-80 grit. Quick work with a grinder revealed multiple layers of paint, old Bondo, and rust. Use a good professional filler from a paint supply store. I never really have tried the metal to metal filler so I really couldn't give you any insight in to that, but as far as the tiger hair, if you've never used it, it's very difficult to work with, but extremely strong. If you don't take the time to smooth the frame and decide to just spray it with epoxy, it will look good one time. Clean the entire unmasked area with a grease-cutting dishwashing detergent, followed by clean rinse water. Today's resin technology makes the adhesion of these new resins as good as or better than most epoxy adhesives. Bondo is best used for filling in minor dings and pits and smoothing out surfaces cosmetically before painting. People also ask, can you put epoxy primer over filler? I get it in a 24 oz. If the surface rust has created pits in the metal, you can fill them now with body filler or wait until the epoxy primer dries and apply multiple coats of filler primer. Mix well with a small plastic spreader until the color is uniform. While this is not a great discovery, it can be corrected. The Bondo brand name was created in 1955 by Robert M. Spink, just a few years after the use of lead body solder began to be prohibited. Any body know the # off their head? The important thing is to make sure the surface remains smooth and level as you build up the surface. Here are a few places that body filler should not be used: Rust - putting filler over rust will only make things look worse. Rust converter stops the oxidation process that creates rust and prevents the rust from spreading. Can I apply body filler over this? No priming or etching is needed as long as the metal is textured and not rusted. 2 Mix and apply body filler over epoxy. You can actually paint over it, use body filler over it, and they make a product with a long hose on the can specifically for coating the insides of frames, body cavitys, etc. Anything deeper than 1/4-inch needs fixing, since thick Bondo shrinks over time. Always i repeat always use Epoxy primer first on the bare metal then body filler over the epoxy then filler primer Lab-metal® is a metal repair putty, dent filler and patching compound.ready-to-use right out of the can! If you have pits with rust in them the best process is to blast until the rust is gone then epoxy prime then apply either body filler or filler primer to level the surface. Anywhere that gets too hot - you'll simply end up with a clumpy, popcorn ceiling- like look. Pitted metal is caused by rust eating down below the surface of the metal. Success! Open the separate harder and spread 5 to 8 drops of it across the body filler. Filler primers are basically formulated to fill in any pits in the surface from sanding or rust even quicker than an epoxy primer alone. This product is available at most auto parts stores and includes detailed instructions for its use. I cannot remember the # for the Evercoat Polyester. When we did this car yrs ago my uncle building it with me did not use any body filler, and now im hearing reccomendations form others to get the rust out of the pits and apply body filler over to smooth out the . Lab-metal® ready-to-use repair compound spreads like paste and hardens quickly into metal. I found a few low spots with a contour gauge, so out came the pin welder. Fast Etch can be sprayed, brushed, or used as a parts dip. Epoxy first. It causes an uneven surface that must be smoothed out before it can be used or painted. After that day it will be impossible for you to ever clean the frame and/or detail the bottom of the car. Then I wait a few weeks to sand and feather the edges. "Filling rust pitted area on metal before chroming" Q. I get a "maybe possible but we will not guarantee" answer from most chroming firms on following question. I used the off Brand "Smart" that is the same thing as the more expensive brand Finish Master sells. Apply filler within seven days of applying epoxy primer to maximize adhesion. Make sure to work quickly, as body filler dries fast. if your set on the conversion … We use 36 grit grinding disks to clean and texture the metal before applying filler. Make sure you follow any recommendations by the epoxy manufacturer on windows or sanding grit for adhesion for the filler over epoxy. Make fast, permanent repairs, especially before powder-coating. Plus the Tiger Hair, unlike some cosmetic fillers people . Of course here in Az you would likely never notice! A body shop I deal with had an early '70's Mustang come in after an accident. Step 3 - Apply Fiberglass and Epoxy After mixing your epoxy with its hardener, apply it to the inside surface where you've removed rust and debris. If you have pits with rust in them the best process is to blast until the rust is gone then epoxy prime then apply either body filler or filler primer to level the surface. Applying body filler over epoxy primer provides maximum corrosion protection for the metal. OPTIONAL: Scuff Epoxy with P120-P180 grit sand paper or red scuff pad. It's vital to remove all the rust when working with the metal or the problem will simply return. The rust pits that are left will collect dirt and it will be impossible to get it out. You can generally add as many coats of filler . Use a piece of cardboard as a mixing pallet. This rust hole filler is so tough it may actually add strength to weakened metal, and it won't absorb moisture and swell like conventional body fillers. If you can't blast the pits clean you can wire brush to remove the loose material then apply a "good" metal conditioner like Picklex 20 then epoxy prime and fill the pits . most importantly be sure to use a catalyzed primer. It works fine with acid. Generally I spray the epoxy and then lightly block sand with say 150 grit just to dull the surface. POR-15 Patch is quite literally POR-15 Rust Preventive Coating in a tube, and it dries as hard as a rock, remains flexible, and once dry is totally impervious to fuels and solvents. if you want a long term repair, i'd recommend some type of media blast. That is what makes it "lightweight" and makes it easy to sand. Mike Bumbeck Mike Bumbeck. Sticking at different rates could indicate filler over rust or other body damage. First paint both sides of the rusted area with POR-15; then use body filler or putty as soon as the POR-15 is dry to the touch. People also ask, can you put epoxy primer over filler? Generally this is a ribbon of hardener about 2 inches long to a golf ball- sized glob of filler. ♦️Cleaning and prepping the metal very well is the key . Most putties on their technical data sheets say that it should be over nothing no finer than 180. This is a must do step and is listed in many paint companies technical refinishing manuals . Aluminum-filled, 1-part repair putty. sand blast is the only way to go but it must be done right or you will warp the sheet metal. After some grinding with a 24-grit resin sanding wheel on a four-inch grinder, the patch was ready for a skim coat of body filler, primer, and finish paint. Easy to Use ; First and foremost you need car body filler that is easy to use. I just welded in some new metal rust repair panals, ground them down, and Ospho'd them. There are some PAINT OVER RUST products out there (which most people have failures with) but I think the metal conditioners--in auto body work--are for microscopic rust, such as a small speck in the bottom of the rust pits. Thick Bondo shrinks over time warping ) at most auto parts stores and includes detailed instructions for its use //www.hotrodders.com/threads/can-you-bondo-over-primer.34769/! 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