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can i use rubbing compound on polyurethane

by Name Smitham Published 2 years ago Updated 2 years ago
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Yes, a rubbing compound may be used on polyurethane if compatible. Being a mild abrasive it will tackle small scratches and marks by smoothing them out.

Dampen a clean, cotton cloth with water and apply automotive rubbing compound to the surface in a circular motion. Note: The compound has a fine abrasive that'll remove any scratches left by the 400-grit sandpaper and restore the luster in the polyurethane finish.Sep 17, 2017

Full Answer

How do you Polish polyurethane?

Small areas will have to be polished by hand unless you have some funky buffing tools. Make sure the poly has cured for a minimum of 4-5 days at 70f. Do not try to polish an uncured film. Start gently, sand all the imperfections (wet 1000g) and then clean the surface well.

Can you use sandpaper to buff down polyurethane?

To buff polyurethane, use sandpaper to smooth down the surface, clean it off, and then using a buffing pad (by hand or with a sanding tool) in even, circular motions to slowly work the whole surface. You can also apply a wax or polish for a finish with greater shine.

How do you get a matte finish on polyurethane?

Now if you want a matte polyurethane finish or something with just a little bit of gloss to it, then all you need to use is this fine pad. It’ll smoothen things out and give you just the tiniest little bit of sheen.

Can you use a brush to apply polyurethane?

This is especially true if you’re working in a home shop and you’re applying a polyurethane finish with a brush. I want to show you a technique here that will allow you to produce glass-smooth finishes without spray equipment, just using an ordinary brush and polyurethane finish.

How to remove roughness from wood?

How to polish a table top with steel wool?

How long does poly dries?

How to get smooth finish on wood?

How long should I wait to rub brown paper bags?

Can you use rubbing compound on scratches?

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What can I use to buff polyurethane?

Use a smooth piece of sandpaper that's around 1500-grit, then start rubbing down the finish in long, smooth motions. If you don't have any sandpaper on hand, you can also use a brown paper bag to buff the surface. If you don't have any super-fine sandpaper on hand, you can use a lower grit level, like 320.

How do you smooth a surface after polyurethane?

2:345:33WOOD FINISHING: Glass-Smooth Results With Polyurethane - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is the fine grit. And you want to use this believe it or not in conjunction with a random orbitMoreThis is the fine grit. And you want to use this believe it or not in conjunction with a random orbit sander. With no no abrasive disc on it. So the sanding the sander causes the rubbing pad to move.

Can you use rubbing compound on clear coat?

Meguiar's® Clear Coat Safe Rubbing Compound is the ideal way to safely remove oxidation, stains and scratches from neglected surfaces by hand. Safe on all glossy paints and clear coats for safely rejuvenating your car's appearance while producing a clean surface without scratching like traditional tub products.

How do you polish the final coat of polyurethane?

Put on the polish Apply only one thin coat. Then, remove any dust nibs with 1,500-grit sandpaper or a piece of brown paper bag. Finally, using a soft cotton rag or polishing pad, buff the finish to a high shine using automotive paste wax, photo below, which has fine abrasives that polish the finish even further.

Why does my polyurethane feel rough?

Sounds like the poly might have picked up some dust. Try "sanding" its surface with a piece of kraft paper (for example, a piece of a brown paper bag), which is just abrasive enough to polish the surface.

Can you buff out brush strokes in polyurethane?

*How Do I Remove Brush Strokes from the 3rd Coat of High Performance Polyurethane? Sand down the final finish with a 220-grit foam sanding pad, and then add another layer of General Finishes High Performance PolyurethaneTopcoat. Apply liberally than you did previously without heavy back-brushing.

Should I polish polyurethane?

With each scratch or scuff, however, the polyurethane gloss begins to dull, eventually becoming dirty and worn looking. You can reverse this process by polishing the polyurethane with mild abrasives, creating a high-gloss look that gives your surface a smooth, bright and scratch-free appearance.

Can you buff polyurethane with steel wool?

The steel wool works it's magic and leaves a nice, even looking sheen. You can do this in a circular motion, but make a few final passes with the grain to reduce visible scratches if there are any. Do this over the entire surface until it looks even and reflects light with a bit of a haze.

What happens if I don't sand between coats of polyurethane?

For some types of poly, nothing happens if you don't sand between coats of polyurethane. However, most polyurethane will not adhere properly if you skip sanding dust nibs and brush marks on the finish. The polyurethane finish will eventually peel off or become deformed.

Should you sand the final coat of polyurethane?

No, you don't need to sand the final coat of polyurethane. The only time you should sand the final coat of polyurethane is if you haven't gotten a smooth finish. Different problems can occur when you apply polyurethane, such as dust nibs, bubbles, and streaks.

How do I get a smooth finish with water-based polyurethane?

Use a Roller on Large, Flat SurfacesA 6-in. rollers lets you apply the poly fast and evenly. ... Don't freak out when you see the finish right after you lay it down. ... After each coat, re-dip the roller in mineral spirits and put it into a zippered plastic bag for the next coat and leave the wet tray to dry.

Can you sand polyurethane with steel wool?

Using steel wool or sand paper allows you to create a uniform surface for the next coat of polyurethane, which generally looks nicer, more professionally, etc. In my experience, assuming the finish is dry, there isn't a difference other than the coarseness of the sand paper or steel wool.

How do you apply polyurethane without streaks?

Thin your polyurethane with paint thinner, mixing it with a paint stir stick. When polyurethane is too thick, the brush marks hold their shape and don't settle out. Thinning the product provides a smoother finished surface. Experiment with different amounts of paint thinner to see what works best for you.

Turtle Wax Rubbing Compound - FineWoodworking

Can something like TurtleWax rubbing compound be used to rub out a cured varnish finish? What’s the difference between these kinds of rubbing/polishing compounds and those sold by Homestead finishing […]

Polishing Polyurethane to a High Gloss - WOODWEB

Polishing Polyurethane to a High Gloss Buffing compounds, sanding materials, and techniques for that super-high final shine. May 24, 2006

4 steps to a perfect polyurethane finish | Wood

After the third coat, sand with 320-grit, then 400-, and finally 600-grit sandpaper. Sand in alternating directions with each abrasive to make it easier to see whether you've removed the scratches from the previous grit.

How to get rid of streaks on polyurethane?

Eliminate brush streaks and uneven coating by changing tools. For vast surfaces, use a sponge roller as opposed to a paintbrush. A wipe-on polyurethane does wonders for smaller parts.

What is rubbing compound?

Rubbing compounds are chemical abrasive formulas that deal with tiny scratches by flattening them out or sealing them in.

How long does it take for polyurethane to dry?

2. Never Buff Uncured Polyurethane. Dry the coat of polyurethane entirely before buffing it. Solid hard dryness may take 48 hours for water-based polyurethane and a few more days, sometimes even weeks after application for oil-based ones.

How to buff wood?

Buffing involves light sanding. With a thin layer, you can’t trust yourself as a beginner not to get through to the wood. This doesn’t mean going overboard with several thick layers, however. Apply 3-5 regular films with thorough sanding in between.

How to sand styrofoam?

Take the fine-grit sandpaper and wrap it around the block of styrofoam. (This helps you hold the paper better.) Begin sanding the surface. Use back and forth motions following the direction of the grain until you cover every inch and level the entire surface.

What to use to smooth out a cut?

You may apply a fine cut cleaner or a swirl remover at this point for extra smoothness.

What to use to press a hard button?

A hand-sized block of styrofoam, a foam pad, felt or anything with the same density – in between hard and squishy – will do. It offers your hand some resistance when you press too hard. Don’t worry, you won’t need this when you get the hang of things through experience.

How to polish uncured film?

Do not try to polish an uncured film. Start gently, sand all the imperfections (wet 1000g) and then clean the surface well. Use a fine cut cleaner by McGuire's or 3M and follow the instructions on the bottle. Clean all residue when done with a damp cloth. Repeat the polish process with a swirl mark remover.

How to keep dust from getting on finish?

To avoid bubbles and dust in finish, I pour in a dust free room with a small portable blow torch at hand and if bubbles pop up I take care of them then. Cover the project with dust free box and/or set up a small car port type cover with poles after you are sure all bubbles are out. The cover/s will keep any falling dust from getting on the finish.

How to get mirror finish on a mirror?

A Mirka Polarshine 1500g disc on an orbital sander will work well. Then use a Lamb’s Wool bonnet and apply a small amount of C20 cream, damp with a little water . Wipe clean and then apply T10 cream (also Mirka) on an orange dotted pad on a polisher at around 2000rpm with light pressure. You will get a mirror finish no problem. If you want to you can finish off with F05 cream on a flat black sponge head.

What grit to use for orange peel?

You're looking for a uniform dull finish. Any areas that show up still shiny mean you haven't knocked them down enough and the finer grits will never touch them. Once you're sure you've got a good 1000- grit base to work from, proceed through 1200, 1500, 2000, and 2500 grits.

How to remove scratches from paper?

I found rubbing with the grain was fine, no need to make circles or figure eights. After finishing the 2000 grit pass, rinse off and let dry. The final step is to buff out the 2000-grit scratches with polishing compound. I used 3M "Perfect-It" and my Porter-Cable worm drive random orbit sander.

Is Mequires good for polishing?

Mequires is good. But their products are too mild. And they are made to break down as you use them because they want to help you to avoid rub-throughs. I avoid rub-throughs by having years of polishing experience, not by a product designed to hold my hand and stymie me. That said, use 3M's Microfinishing Compound and finish that up with 3M's Finesse-It II (that's "two"). You can use either a lambswool polishing bonnet or the foam pads. I like both. I can get closer to edges and not have them burn through with the foam pads. Being foam, they break down with use and time.

How to apply polyurethane finish to wood?

The first thing to understand is the need to begin with a thick polyurethane finish film to ensure that you don’t buff right through to bare wood. That’s not to say you should apply each coat thickly. Four regular coats of urethane applied one over the other is a good starting point. Sand lightly with 240-grit sandpaper between coats, then let the last coat dry for at least 24 hours. This is standard practice with any wood finishing job, and is nothing out of the ordinary. That said, sanding bare wood beforehand to create a smooth foundation is key. Click to watch the video on the right to see how I’ve been sanding wood as a professional cabinetmaker since the mid-1980s.

How long does it take for urethane to dry?

Sand lightly with 240-grit sandpaper between coats, then let the last coat dry for at least 24 hours. This is standard practice with any wood finishing job, and is nothing out of the ordinary.

What is buffing wood?

Buffing wood is the best-kept secret of the wood finishing world. What surprises me is how few woodworkers know about it considering how often people have trouble creating a wood finish they can be proud of. Buffing can create a glass-smooth finish, even after polyurethane has been applied not-too-well with nothing more than a brush in an ordinary home workshop. Buffing is especially valuable for dealing with the nasty side of waterbased urethane – the brush strokes, the bubbles and the less-than-smooth results many people struggle against. The dirty little secret of the wood finishing world is that waterbased urethane is significantly harder to apply well than its oil-based ancestor. Buffing really does make it easy to get superb results on wood finished with polyurethane, even waterbased. That’s what you’ll learn about here. Buffing works beautifully, even if you’ve applied a finish that’s not too smooth to begin with.

How to remove dust bumps from wood?

Start with one of the old pieces of the 240-grit sandpaper you used to sand between coats earlier, then wrap it around a block of Styrofoam and rub the wood surface lightly in the same direction as the grain. Used sandpaper is best because it’s gentle. It only takes a few strokes to remove the dust bumps, so don’t overdo it. Also, be sure to avoid fresh sandpaper for this job because it cuts too aggressively. You definitely don’t want to go right through the finish to bare wood. Like I said, use a piece of old 240-grit sandpaper left over from the sanding you did between coats of urethane.

Can you buff polyurethane?

Most ordinary people who attempt to apply a polyurethane finish eventually resign themselves to sub-standard results, all for lack of one tiny piece of information. But a rough, ho-hum wood finishing outcome isn’t inevitable when you understand how to do power buffing. It works perfectly on all flat wooden surfaces, making use of the ubiquitous random orbit sander power tool. I’m not talking about using this sander for sanding, but rather for buffing a finish that you’ve already applied.

Is water based urethane harder to apply than oil based urethane?

The dirty little secret of the wood finishing world is that waterbased urethane is significantly harder to apply well than its oil-based ancestor. Buffing really does make it easy to get superb results on wood finished with polyurethane. That’s what you’ll learn about here.

Does buffing help with scratches?

Got some scratches on your car or truck? Buffing might be able to help with that, too. Click below to watch how I use the process successfully, including the kind of rubbing compound that makes it work. Transcript below.

How to rub a vertical surface?

To rub vertical surfaces, simply rub with wax and 0000 steel wool in the direction of the grain, and wipe off the wax immediately. Because vertical surfaces are not viewed at low angles or quite so critically, you can usually get away with a single pass and wipe down rather than the more complicated process I described for table tops.

What is satin rub?

The goal of a satin rub is to leave a very uniform scratch pattern going in the direction of the grain, which will refract light evenly.

Why do you rubbed gloss?

Rubbing lets you quickly remove any dust nibs, surface and brush marks or sheen anomalies. The second reason is overall appearance. Rubbed gloss simply looks different than off the brush or off the gun gloss, and satin does as well.

How to make a gloss finish flat?

Sand the cured, gloss finish aggressively to make it absolutely flat. Start with 600 or 800 grit self lubricating paper and continue through the grits to 1200 or finer. Use mineral spirits or soapy water as a lubricant if you use wet and dry paper instead of self lubricating paper.

Can you rub satin to gloss?

Going the other direction, trying to rub a satin finish to gloss, is not a good idea. While the surface will get a bit more reflective, the embedded flatting agent will prevent you from creating the sort of clear, gelid gloss you most likely want. However, you can rub satin up to semi-gloss, matte up to satin, or rub any finish to a lower sheen.

Can you use satin finish on gloss?

Apply enough coats of satin finish you will see a slight loss of clarity in the build. For that reason, it is often wiser to build up a thick finishes in gloss, which has better clarity. You can then switch to satin for the last couple of coats, if that’s the sheen you prefer, or simply rub the gloss down to satin.

Does rubbing change sheen?

Changing Sheen. While not one of the primary reasons, one function of rubbing is to change the sheen of a finish. However, there are limitations to that because of the way satin finishes are formulated. Finishes typically start out gloss, and are made semi-gloss, satin or matte with the addition of something called flatting agent, ...

What is a Rubbing Compound?

Sometimes also referred to as a cutting compound, a rubbing compound is a product that is used to restore the finish and appearance of a vehicle’s paintwork ; but you will only get the results you want if you know how to properly use a rubbing compound.

Why do you need to use a little compound at a time?

Only use a little at a time because if there is any excess compound and it dries it is more difficult to shift and the job will take you longer.

Can you use a compound to remove scratches?

On the other hand, if you need to get rid of minor scratches and scuff marks then you may need to use a more abrasive compound, possibly finishing off with a lighter variety. Heavier marks and scratches may also need a machine to apply the compound with whereas less serious jobs can be done by hand if no machine is available.

Can you put a grit guard on a paint bucket?

If washing by hand you are advised to fit a grit guard to your water bucket – these devices prevent grit and dirt from being picked up by your sponge and re-applied to the paint, possible causing more scratches. It is essential to ensure that there is no grit or dirt on the area to be treated.

Do you need eye protection with buffing machine?

Eye protection, in the form of a pair of goggles or protective glasses, is strongly advised, especially if using a buffing machine or machine applicator. Related Post: Best Car Buffers and Best Safety Glasses.

Can you paint under cover?

Make sure that you have all required items to hand and that you are preferably under cover – if that isn’t possible choose a dry day, but not too sunny, as the paint surface may get hot in very bright sunlight making application more difficult.

Can you use rubbing compound on paint?

If the paint surface is free from scratches and scuffs but the finish has gone dull and lifeless then you probably only need a relatively light rubbing compound to restore the paintwork to showroom condition. On the other hand, if you need to get rid of minor scratches and scuff marks then you may need to use a more abrasive compound, possibly finishing off with a lighter variety. Heavier marks and scratches may also need a machine to apply the compound with whereas less serious jobs can be done by hand if no machine is available.

What to use to polish a bathtub?

Any kind of spray or gel formulated for cleaning bathtubs or bathrooms, in general, will work. Alternatively, you can just use a mild detergent, such as dish soap, to clean the tub.

How to polish a wet tub?

You should never attempt to polish a wet surface. Once you've got the tub clean, dry the surface as much as you can with a towel then leave it to air-dry. Wrap plastic bags around the fixtures, the shower head and tub faucet to prevent drips. Pull the shower curtain away from the tub to make sure no moisture gets trapped inside the tub. Allow the tub to air-dry for at least an hour.

How to restore a bathtub that has been scratched?

If your bathtub has lost its luster and become scratched and dull from wear and tear or use of abrasive cleaners, you can restore it to its original glossy finish with a simple application of a liquid polishing compound.

How to keep a tub from dripping?

Once you've got the tub clean, dry the surface as much as you can with a towel then leave it to air-dry. Wrap plastic bags around the fixtures, the shower head and tub faucet to prevent drips.

How to stop a shower from dripping?

Wrap plastic bags around the fixtures, the shower head and tub faucet to prevent drips. Pull the shower curtain away from the tub to make sure no moisture gets trapped inside the tub. Allow the tub to air-dry for at least an hour. Advertisement.

Can you use wax on a shower wall?

If you have a shower-tub combo unit, you can use automotive wax to buff out scratches on the shower wall — though you should never use this on the tub floor. Follow the instructions on the packaging of your polishing compound ...

Can you use abrasive pads on a bathtub?

or Brillo pads, and abrasive powders, like Ajax and Comet, should be avoided when cleaning your bathtub, advises Ask the Builder. Although the abrasive, scouring nature of these cleaning products may sound like the right tool for the job, they will actually make cleaning your tub more difficult in the long run. These cleaning products actually create tiny scratches, which dull the surface and trap dirt, forcing you to have to scrub even harder, creating more scratches.

How to remove roughness from wood?

Take a brown paper bag, the kind you would pack your lunch in, and rub over the finish. The brown bag acts like 4000+ grit sand paper and will remove alot of roughness without scratching the finish. Give that a try.

How to polish a table top with steel wool?

The best thing I could suggest is wet sand the table with 2000 grit paper and very lightly buff the finish with 0000 steel wool. You put almost no pressure on the wood as that would tend to make it streaked. If the sheen doesn't come back enough after applying a polish you might have to rub it a little with rubbing compound.

How long does poly dries?

First of all poly dries very slow. The finish would need to dry a month before using compound or waxes on it. It just needs to cure completely or these foreign substances can get into the finish.

How to get smooth finish on wood?

The key to getting a smooth finish is applying a good enough build over multiple coats and a smooth sanded surface between each coat. Your last coat you need to make sure the surface is free of dust, and apply a thinner coat. Your last sanded coat should be smooth and level.

How long should I wait to rub brown paper bags?

I would wait 48 hours before doing the brown paper bag rub. As long as the finish is good and dry, you will be ok.

Can you use rubbing compound on scratches?

If you're referring to anything more than sanding scratches, rubbing compound probably won't do it. Automotive finish rubbing compound is one step away from polishing wax.

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