How To Block Sand Bondo too, but if you don't grind a fairly rough surface onto the sheet metal the filler may not anchor as well. So here is a totally random little project I tackled. I have a car with couple of dents which I filled with bondo and sand it down with 80-grit sandpaper. NFM cannot provide service or exchange as a result of manufacturer’s imperfections. block sand with the sponge block, prime and paint. Does this sound feasable? Will the epoxy stick ok to the bondo?. You can still sand it and everything, it has way more control than bondo, but it takes 24 hours to fully cure. Water can work its way into small crevices and freeze, thus transforming the small crevice into a large crevice. The matchsticks are consistent widths and are thick enough that they shouldn't snap off when driving them into the hole. It’s also the only block on which Nether wart grows - a vital ingredient in many potions. It is recommended that you wipe off excess Bondo and smooth out the Bondo as much as possible before it dries to minimize the sanding required. This is where your skill will get better with time. A belt sander is not necessary but it is faster than hand sanding it. The sanding block is much easier to hold than regular. Use a razor blade to score the area so that the filler has some roughness to adhere to. com - Click the link for 9 auto body filler tips. Apply temporary adhesive to the block and go to town. They'll have materials and tools on hand for the job and will likely do it much better anyway. I have repaired many items with it I have also found a heat lamp will really speed up the cure time. The truth is that pretty much any high-end custom car or restoration project has some body filler. An indepth look at what it takes to get that Show Quality Paint Job on your old car or truck. Note that I use the paper wrapped around a piece of wood or rubber eraser to make a flat sanding block. Here are some. Allow it to harden or skin over. how to sand down bondo Discussion in ' As for the no crap i meant i know to use sand paper and a block, i just should of said it the right way. How to get Perfect Body Panels with Block Sanding. The smell goes away once you seal it with primer. The bondo idea involves naturally the “bondo” Bondo is just a brand name. Use Bondo glazing and spot putty to. Block sand using a different color primer as a guide coat to get a very smooth surface after body work of any kind has taken place. Or fiber filler. Apply your patch to dry for 24 hours, then add another layer of joint compound and repeat as needed. Installation: 1. Soul sand is useful in all kinds of surprising ways. How To Prep And Paint Your Corvette. ) Trench the dirt around house 1”-4”. As the final step in preparation, apply masking tape along the outside edge of the defect all the way around. Sand the area first with 150. Learn the basics of how to use and apply bondo to create an even metal surface in this video titled Slingin' Mud. This was sanded smooth and the paint was touched up where needed. A wooden popsicle stick or paint stick works well. You'll still have to apply bondo and sand out the meeting edges after the majority of the surfaces are done. Might take several small applications to get it right. I purchased this sanding block to primarily use for wet sanding but it can also be used for dry sanding. Step 4 - Sand. I want to color it black to fill some large voids in a piece of mesquite for a lamp base. Block Sanding Bondo For 2K Primer! How To Block Sand Car Panels - Primer-Surfacer -Dura-Block & Soft Sanders with Kevin Tetz - Eastwood: Block Sanding BONDO-Using A Guide Coat: How To Apply and Block Sand Body Filller - New Filler Changes Colors: How to block sand body filler. Wet sanding can be used on new paint to provide an even finish and remove what is commonly referred to as the "orange peel" effect, where the paint appears to have the texture of an orange skin. Several grades of Bondo; Bondo "gold" is a better choice IMHO. The solids in lots of brands of automotive bondo is talc. 4) Skim coat again with Bondo Glazing Putty. I have used Marine Tex to repair sand holes in auto block castings. The same goes for applying the 'Bondo'. When the latex is dry, remove the item and mount the mold in a supporting structure, such as a box. Big long, flat 'x' s. If you use contrasting colors ofprimers, dp90 say grey, and primer sufacer is yellow, you can watch when you blocksand to make sure you don't sand off all the surfacer. Well, you've found the right article. This will be what prevents the Bondo from adhering to the project surface. Well, this happens sometimes & it's never funso I figured I'd post a how to tutorial on it & make the best of of a bad situation. Bondo fills the crack but has only minimal strength under tension, so it cannot really "bridge the gap" of a crack. This is the most important step to a great paint job, so do it right and don't rush it. then prime again. IMHO _____. Hey, it's Tony with another live stream. The salespeople at the auto supply or auto paint store can help you make the right selection. Start with 80-grit on a nice hard block that fits across the area. So it will be mostly typical blocking. After it dries, cut/sand the plug flush. First off i dont believe there is a clear coat on my car because it is extremely faded, its used to be bright blue now its about half blue half silver, the bumbers however are not faded. It is PN 280, Bumper Repair Kit. Then, laminate over the area with the strip of Formica which is 1 1/8” wide. You don’t have to be smooth at this point, you are just trying to cover the area. Sand down any remaining edges of the bondo and get them as smooth as possible, feathering into the surrounding surfaces. As soon as the bondo hardens and is still hot just slowly remove from molding. make a practice piece about 6-8” and fill with Bondo – see how it goes. Use a different style handle. Seems risky. In Part 6 of Hot Rod's Ultimate Get to Paint and Body we show you the correct way to sand, prime and pick the best paint for your car. Hint: the Bondo will melt the paint, so just dab it on and don’t try to shape it. Apply temporary adhesive to the block and go to town. I need to find a way to easily sand between coats. He accidentally got the top of the grill in a little bondo that had dripped off onto the rack as he flipped the grill over. The holy block has holes on one side and flat surface on the other. Get rid of holes in your door fast! Find out how to repair hollow core door holes with this easy do-it-yourself project found at Queen Bee of Honey Dos. Durable metal filler for fast, permanent repairs. These may include fit and finish flaws. I had a sanding block like this before, but lost it, so was very pleased to find this one. So in this Google Hangout video, I'm going to give you tips and show you how to do block sanding. Start with coarse sand paper and work your way down to fine grit paper. 4) After letting the Bondo dry, time to sand. 3Mcollision. Day 5 - Research We put the charger on the trailer and took it to a body shop and got a quote for how much it would be to do all the metal work and paint on the outside (excluding the trunk floors). Use a vacuum to remove dust, dirt and small pieces of particle board. You can often repair damaged, nonstructural wood—such as molding, siding, or trim—on your home by filling the damaged area with automotive body filler. For smaller areas or areas with intricate curves, a rubber sanding block works well to follow the shape of the piece. They'll have materials and tools on hand for the job and will likely do it much better anyway. Since I'm sure you didn't refund his deposit, why not hire someone to remove the grease and bondo from the cement and paver driveway. if you go to your local paint shop and get the longest hard foam block they have and a roll of their 80 grit so as to tear it into the correct length to fit said board you'll be down to bare metal in no time. I like using a red scuffing pad in all areas where the block will not work, for example the edges. How To Correctly Do Auto Sanding On Bodywork Repairs March 8, 2018 December 1, 2015 by Tony Discover the Methods of Auto Sanding such as Using an Auto Sanding Block vs. See more ideas about Furniture repair, Wood repair and Furniture fix. Ready-to-use metal repair putty, dent filler and patching compound. Day 5 - Research We put the charger on the trailer and took it to a body shop and got a quote for how much it would be to do all the metal work and paint on the outside (excluding the trunk floors). Usually the easiest method with radios that have scratched and chipped paint is to sand the case smooth (removing the chassis and other parts first, of course). After paint usually color sanding starts at 1200 or 1500 and goes all the way up to 3000 before buffing. Sherwin-Williams has all the DIY paint and DIY paint supplies homeowners need to make their project a success. I let my filler sit for around 30 to 45 minutes before I sand it. 4) Thicker areas of the application dry last-make sure it is totally dry before you sand. Mix Bondo Glazing and Spot Putty and apply to the entire repair area overlapping the body filler and paint feather-edge. Watch the paint hit the car!. ABOUT THE CLOTH. can be generic, cheap, is sold in aerosol cans. Conversely, if there's an area you don't want Bondo to stick to, apply a release agent (see tools and materials) or use Scotch tape or wax paper. Sand the surface with a pad sander and 120-grit sandpaper to level the filler and remove the excess. 1969 Dodge Charger Restoration (General Lee) He also could just tell the front part of the driver side fender was bondo under the paint. So take care of small spots ASAP. The question is how well it'll sand because I imagine you would have to do a touch up with sand paper after it's done, like bondo. Eastwood Company 193,678 views. Applying the bondo and sanding with the pieces helps with the parallel surfaces and symmetry. In a lot of ways, prepping ’glass is just like prepping metal. Due to the mass production process, this item may have imperfections. They do not care about whatever temporary crisis that is causing you pain and distress, they only know that you are feeling sadness and they will mourn with you, and let you know that everything is going to be ok. The matchsticks are consistent widths and are thick enough that they shouldn't snap off when driving them into the hole. If you sand too far into one of these edges, you can end up with little or no protection on your basecoat, which'll invite fading, peeling and rust later on in the car's life. The Bondo Bumper and Flexible Part Repair kit did not work for me. And hopefully you are using a sanding block for all of the flat surfaces to keep them dead flat. Bondo works like soft clay and hardens through a chemical reaction that causes heat. Remove the sandpaper from the water and wrap it around a sanding block. There still may be occasion to perform some minor body work and filling if the block sanding uncovers flaws. Use a vacuum to remove dust, dirt and small pieces of particle board. Afer spending as much time as I have getting the commando body ready for paint I guess I should make. 5) Sand high spots with 320 grit paper, then lightly sand with 600 grit to smooth. you'd really have to go nuts to adversely effect your slate if you are sanding with a flat metal block sander. My body shop guy used a propane flame (flame, not point as it is on high) and burned over the bondo spots. Prepare the surface to be fiber-glassed. Mix the hardener thouroghly, then apply it with the plastic spreader you got when you bought the 'bondo'. Look in fashion magazines for the best-looking rips and where they are located. That is why I recommend only applying a small amount to the welded areas and rough sanding it. At least sand through it to the primer, then spot in the flaws. Let it harden then block sand it with 80 then 120 then prime it. block sand with the sponge block, prime and paint. the body of your vehicle, you can use two-part body putty Bondo, sand paper and primer to repair the spot before painting it with a suitable car body paint. GFRC- INSTALL-1 (12/2010) GFRC General Installation continued… (page 3 of 3) CAULK JOINT / SEALANTS - For cement use in exterior application. Personally, I won't apply bondo thicker than 1/4" no matter what, and try to keep it less than 1/8" or so. Hey everybody, Paul here. But before you start slapping it on the side of the car its best to get a slide hammer action dent puller they are cheap and can even be rented. To fill in pinholes and to get a uniform, smooth surface for painting, topcoat the repair with Bondo® Body Filler. It is a thick plastic paste that is spread over the affected area, then sanded down to a smooth finish. 3M(tm) rubber sanding block is easy to hold and the heavy rubber allows for better sanding control. Apply a 320 abrasive grit to your sanding block and remove all straight line scratches from the paint around the filler area. Press the filler into the dent with a putty knife, leaving a slight mound above the surrounding area. I always talk about something called "sanding flat", "flat-sanding" or "block-sanding". I'm doing a Satoshi grill and as such we were working with bondo to fill areas before paint. If your plastic body filler is fairly smooth, it should block out pretty fast. How do you dry sand primer? Unanswered Questions. Using sandpaper with your hand alone allows dips and hard edges to appear on the surface. I won't have any really deep spots to fill and sand aside from the roof-to-1/4 panel areas. I on the other hand do work a body shop and you never get bondo wet. As with all aspects. Tips for Prepping, Applying, and Sanding Body Filler/Bondo Posted by Ashley Schwab on Feb 02, 2016 Automotive plastic body filler, often times called " Bondo ," is used quite frequently for automotive repairs and restorations. Spread your bondo on then block. Wipe off the sanding dust with a rag and sand by hand with 150-grit paper to remove the swirl. Repairing & Sealing Cracks & Holes in Stucco. I will be using the Dura-block products, so I will get sandpaper on rolls. Once the body work is done, I block sanded the whole tank with 400 grit sand paper to get a nice smooth surface that is ready for primer. It can be frustrating to apply a few coats of paint to a new project only to see stains coming through a few days later! Whether you are painting a new piece of wood or recovering a piece of furniture you can learn how to stop stains from bleeding through paint by taking a few precautionary measures and by appropriately treating existing stains. Then scoop the Bondo into the resin (Figure 2-40). Nova Skin Gallery - Minecraft Skins from NovaSkin Editor. The goals are to smooth the wood, remove loose paint, and prepare the surface for accepting new primer. Remove the sandpaper from the water and wrap it around a sanding block. For advice on how to repair a bigger hole, read on!. now it has better lines. Let the bondo set for about 20 minutes, but not over night as it will be LOTS harder to file/sand. It has most of what you need for the basic repair. Sakrete Top 'N Bond® Concrete Patcher is a polymer modified sand cement repair mortar requiring only the addition of clean potable water. If your primer didn’t take care of the pin holes and deep scratches in your bondo, fill it with a little bit of glaze putty. I used Duplicolor Filler Primer. Bondo is a very good filler medium to work with, just use thin coats, sand and build up. Sand in a cross hatch pattern, keeping the board in line with your surface. Although most cloths will work with epoxy, there are some that are not compatible. This video was uploaded from an Android phone. Order Bondo. As you can see in the photos, I properly cleaned and sanded the area of the bumper needing repair, mixed equal parts of hardener and resin, Applied over area and then waited 30 minutes for it to harden. Anyone willing to share what dremel bits they use for detailing bondo and resin?. Press down with the spreader to push the filler into the metal. Work on one course at a time to keep pace with the block work. Next, cover a section of the curved surface with plastic wrap, making sure it conforms to all the in's and out's of the surface. Surface Preparation: Wash and clean the repair area with a wax and grease removing solvent. This prevents from digging grooves and the cross hatch pattern offers good adhesion. I had a sanding block like this before, but lost it, so was very pleased to find this one. 4) Skim coat again with Bondo Glazing Putty. (the bit shank is determined by what size router you have). How to repair Rust holes : Bondo is a body charge produced by 3M that can be used to fill holes in rust or damaged sheet metal. Big long, flat 'x' s. You dont want to apply bondo over paint you have to grind the surrounding area but first bringing the dent/massaging the medal to a close level to the existing medal is the first order of buisness. The question is how well it'll sand because I imagine you would have to do a touch up with sand paper after it's done, like bondo. Day 5 - Research We put the charger on the trailer and took it to a body shop and got a quote for how much it would be to do all the metal work and paint on the outside (excluding the trunk floors). Ok, so you have the metal you want to work on down to bare metal and sanded with 80 grit. Since I'm sure you didn't refund his deposit, why not hire someone to remove the grease and bondo from the cement and paver driveway. Industrial sand used in certain operations, such as foundry work and hydraulic fracturing (fracking), is also a source of respirable crystalline silica exposure. A sanding block with courser sandpaper until level with both tin sheets. How to apply body filler. Use very light strokes. Start by liberally spraying an area a couple of square feet in size with your water-filled spray bottle. Use with regular sandpaper. There are two types of fiberglass fillers; long haired and short haired. I usually work better at multiple tasks than one so I coated several several patterns at once. Your fingertips will unevenly supply pressure causing streaking. then you sand and use spot putty to finish it off. So yes there is different colors from different brands. If you get a super wavy hood, you may way to look into some "slick sand" or "poly fill" this stuff is like a spray able bondo. com for Every Day Low Prices. To paint paneling, sand lightly, clean and prime with stain-blocking primer (oil or latex). " Home Guides. Just make sure you get a HARDWOOD dowel (maple, oak, etc), not a hobbyist dowel (aka basswood or poplar) or you will be back to square one. I don’t want to use Epoxy because it would take a tub full. I have done lots of crown and I can glue a seam you can’t see once painted. We have compiled the most frequently asked questions about automotive undercoats. Once the body filler is finished out in 150 to 180 grit, it then ready for the. However, some restorers prefer to have the components powder coated at this stage to completely seal them before applying any filler. So once you've done the first round of putty, switch to the finer of your sandpaper (400 grit in my case) and sand and putty until it FEELS and LOOKS flush. Perhaps using bondo on this repair would be quicker, but that would not yield the satisfaction of knowing that you’ve made a high quality repair using a high skill method. Note that I use the paper wrapped around a piece of wood to make a flat sanding block. As soon as the bondo hardens and is still hot just slowly remove from molding. KILZ will actually penetrate the compound and make it a very strong and durable surface. How to repair mounted bolt holes on your truck bed? try soit welding it shut and sand down. 6) Prime with a sandable automotive primer. At a minimum, a block for sandpaper. Start sanding your fiberglass with some low grit 36 or 80 grit sandpaper. Clean the body area thoroughly. Might take several small applications to get it right. How to Repair a Dent with Bondo. With your sandpaper wrapped around a sanding block (rubber sanding blocks are best and can be purchased in automotive or home repair stores), start sanding the filler using 150-grit sandpaper. In order to prepare your parts for refinishing all paint and runst must be removed from the surface. The wrong way to do it is the way we blocked around the curve. All high end paint jobs go through the block sanding process which insures that excellent flat finish!. you'd really have to go nuts to adversely effect your slate if you are sanding with a flat metal block sander. The Bondo Bumper and Flexible Part Repair kit did not work for me. But Id like to addwhy would you wet sand filler? Thats very fine scratches. I recently bought a 1982 Yamaha Seca 750XJ and the tank was rusted to hell, so I decided to take it upon myself to make it look good again. London via SF, CA. When the second coat is thoroughly dry, sand lightly to smooth out any bumps. More Bondo and my son helps block-sand filler Throughout the course of this project, I will do what I have learned in all the books and videos I've used to dip my toe into the world of bodywork: I will call any plastic body filler by the name Bondo. Allow 15 minutes to dry, depending on the temperature and humidity. Bondo is a very good filler medium to work with, just use thin coats, sand and build up. Plan to spend about $100 on supplies like sandpaper, primer, masking tape and poly sheeting, a tack rag, polishing compound and touch-up paint and clear coat. It's best to sand with a flat block to get the smoothest finish: Note that up to this pointincluding waiting 5 to 10 minutes between coats of putty that the whole project has taken about 40 minutes. Sand the entire counter top to prevent wells from forming in butcher block surface. It sands very easily when dry. In fact, it works so well that the makers of Bondo now sell a similar epoxy product just for wood. Take the surface of the filler material down until it is almost even with the surrounding metal profile. Choose a calm, overcast day and block out the full day to fix the most common rust spots on the hood and doors. The primer/sealer will eventually level things out and give a uniform surface for the color coats. Bondo is best applied with plastic "squeegees" available where you bought the Bondo. Using Bondo to repair damaged veneer. Moisture is the a bad friend to bare metal. Its advantages are that it is fast drying, has low shrinkage and comes in several versions to fit various woods. Durable and environmentally-friendly. HOW TO FIX PLASTIC SCRATCHES, GOUGES AND BREAKS PART 1: ATV & UTV,Dirtbike : Fenders, gas tank, side panels the works. See more ideas about Furniture repair, Wood repair and Furniture fix. Pry the block out gently and apply glue to the two large faces, reinsert the block in the door and drive a 1-inch finish nail through the face of the door to hold the block in place. After you sand with 40 grit then 80 ytou can prime. This was a painless process and I would remarkably advise you guys out there with automobiles to give it a shot if you have some dents. it makes sense. If there are low spots or defects, fill them in with a product like Bondo auto body filler, or Fixall. Let the putty dry thoroughly, then sand the putty smooth. Ensure that the substrate is flat and defect free. Whether you're filing in a crack, repairing a section of concrete, or pouring a whole new layer over an existing layer of concrete, getting the new concrete to adhere to the old layer can be difficult if. What grit of sand paper should i use for my car and bondo? Im prepping my car for paint so all the painters have to do is tape and paint. The coat before final should be sanded with 600 grit, especially if applying decals, or the scratches from sanding will show through. Throw that spot putty in the trash where it belongs. Fill the hole and pull a 2 × 4 back and forth across the patch to level it; then smooth it with a wood float to finish the surface. Which is the only down side, you can even wet your finger or sculpting tool, and smooth it all right down, really minimizing the amount of sanding you have to do. I now have a new hatred for this stuff. I would probably use a 320-grit for the rest of the bumper and then, block sand it with 400-grit. Here are the supplies you will need to purchase: 1 quart can of Bondo-Glass which includes a tube of hardener, Bondo Glazing Spot Putty, Bondo Plastic Spreaders, sandpaper from course to fine, and a small spatula for mixing and applying the Bondo-Glass. DIY- (How To Fix Dents In Your Car), Spread Body Filler, and Block Sand October 1, 2010 by AutoBodyAndPaintVideos Leave a Comment CollisionBlast. Rub the steel wool on the metal in a circular motion to give it a smooth finish. Apply a 180 grit abrasive to the sanding block and sand the repair area until level. then bondo the mirror to the rest of the door. The first step to finishing any woodworking project is sanding. NASCAR Driver Offers Tips for Repairing Dents with Bondo. Begin with a bit of research. sand smooth and rout with a 1/4” roundover. Use the same method as before. Now using your stir stick as a spatula, pack the Bondo into the curves of the surface for a total of about 6 inches in length. Sand and smooth the patch with a course-grit sanding block. Next, we’re going to block along the style line on this fender and show some ways to do it. Check the size of the block by sliding it into the empty mortise. These fillers are often wrongly referred. ) As mentioned, Bondo is the epoxy that I find most reliable for exterior repairs. Heavy Duty Auto Engines Piston Ring Compressor Tools Set With Plier&14 Bands New - New for sale in New Jersey | Lunny's Auto. Although primer surfacer is often referred to as high build primer, it should not be used as body filler. also, solvents generaly dont harm bumpers these days, but the bondo wont be affected by them either. A tip: put packing tape on the back side of your sand paper and it will last much longer and not disintegrate. Right side treated with TubPotion #16 magically repels the water, which helps reduce water spotting. I use my corded dremel 4000 w/ snake attachment for detail work. My body shop guy used a propane flame (flame, not point as it is on high) and burned over the bondo spots. Once it's dry, start sanding with 80 grit paper and work your way to 220 until it's smooth. It sands very easily when dry. In fact, it works so well that the makers of Bondo now sell a similar epoxy product just for wood. I was planning to 80 grit sand the paint, to get at least 1/2" feathering of each paint or primer layer, before the Bondo. Bondo MP Gideon Ochanda has started a project to put idle land into productive use to feed the hungry population and help them make money. Eric is full of useful tips and tricks, here's a recent video he did on resin casting that should surely help anyone new to the area. Start with coarse sand paper and work your way down to fine grit paper. keep in mind that the bottom of the block needs to be as flush as possible) After you put peroxide on your scratches from the screw cutting event, its time to sand the block. Sand the flexible repair material using a hand block and a 150 grade abrasive sheet, or a dual action sander at low speeds and a 150 grade abrasive disc to avoid excessive heat. The latest Tweets from bondo (@bondosf). there was two patches on the body, some on the firewall and a little on each door. Use the sanding block to sand smoothly. Discussion in '2nd Gen. •Sand the filler with 36 grit. Therefore, to get a straight edge across the bottom, it was important to sand using a flat surface such as a sanding block. Then scoop the Bondo into the resin (Figure 2-40). Binkie: posted 12-12-2004 10:38 PM ET (US). I like to hold it where I can put my fingers in the holes. As a pilot project, Ochanda has convinced about 90 landowners in Usigu division, East Yimbo ward, to give 230 acres. Types of Bondo® Filler. However, sanding by hand with a long block sander is best and will get smoother results. I used Duplicolor Filler Primer. I won't have any really deep spots to fill and sand aside from the roof-to-1/4 panel areas. Apply bondo to your hot rod for an even surface. Make Repairs. " Pierson, who lives south of town on Lovers Lane Road, is an artist of a different ilk who can be found "manufacturing" a variety of objects d-art. The best thing about pets is they know what is truly important. I applied another thin layer of BONDO. Remove the wing-This can be done by popping the hatch and removing the 10mm nuts via the holes on the underside. 4) Skim coat again with Bondo Glazing Putty. Sand Again. It's a fiberglass and resin filler that will do the job well. Start with coarse sand paper and work your way down to fine grit paper. In this lesson you will learn about the different types of body filler AKA Bondo, watch videos demonstrating how to mix, apply and block sand fillers. Also sand a little bit every surface what you want to bondo or glue. First, fold the sandpaper in half and tear it lengthwise (also known as hot dog style). Starting from the original valley state in 2015 (T1), the topography in Bondo has been prepared to allow for the 400’000 m3 of material arriving in summer 2017. Bondo 100 Sanding Block DYN100. That’s because when Bondo is used right, it can fill dents and make a car look good as new. Go up to 120-150 or so for a final rough sand before putting your next coats on. Bondo is a specialist material manufactured by Bondo Corporation. ST Blade Fuse Block - 12. A wooden popsicle stick or paint stick works well. 5) Sand high spots with 320 grit paper, then lightly sand with 600 grit to smooth. If i want perfection 180 ill stop at. Sanding: Before painting new wood, sand all surfaces and edges lightly to smooth the grain. As you can see in the photos, I properly cleaned and sanded the area of the bumper needing repair, mixed equal parts of hardener and resin, Applied over area and then waited 30 minutes for it to harden. After it has dried my block paving has gone white where I applied the sand, this is not coming off. Let the putty dry thoroughly, then sand the putty smooth. Generally, if paint will stick, so will Bondo.