Wet Sanding Dried Runs

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How to Fix Paint Runs in Every Situation! Make Your Mistake Disappear.

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What happens here

For thick, dried paint runs, first use a razor blade scraper (window scraper) to carefully scrape off the bulk of the run. This reduces the amount of sanding required. Then, use a 3M sanding sponge (medium grit) saturated with cold water to wet sand the affected area. Keeping the sponge wet prevents the paint from heating up and gumming, making the sanding process smoother and more effective. Ensure the area is thoroughly sanded until the run is no longer raised and feels smooth to the touch. For any remaining minor imperfections, switch to a fine sanding sponge and continue wet sanding lightly.

Goal: Smooth out dried paint runs.

Tools and materials

3M Sanding Sponge — Fine wet sanding and smoothing the area
Bucket N/A — Holding water for wet sanding
Razor Blade Scraper N/A — Scraping off thick, dried paint runs
Cold Water N/A — Wetting the sanding sponge
Dried Paint Runs N/A — The imperfections to be removed

What they say

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glazing putty if we need to so we're dealing with this run on this column got a couple tools we're going to be using this could be the 3m sanding sponge either a medium or a fine sanding sponge a bucket with some water to wet our sanding sponge because keeping your sanding sponge wet is what's going to make the sanding process easier and it's going to make it so the paint doesn't actually when you're sanding it heat up and gum up and get all gummy the sanding a with wet sanding that makes it nice and smooth and a lot easier to sand we're also going to be using some bondo glazing and spot putty if we need it to uh smooth over with a spackle knife so you'll be using a spackle knife if you need the glo bondo glazing and spot putty after you sand it you got to determine after you sand it if it completely sands out then of course we're going to be needing our sprayer to respray it so here's a close-up look at this run i don't know if we can actually get it on video you can might be able to see it in their proper lighting but this is the run that we're going to be dealing with right here i think there you go you can see it right there so after looking at this thing we're actually going to take a window scraper and the run there's a pretty heavy line on the run so we're going to make the sanding process a lot easier we're going to scrape off some of the run with this razor knife and then begin the sanding process so now he scraped off the the biggest part of the the run um the the ridge kind of the mountain of it now that i begin sanding it so just got my 3m sponge with water just going to dip my 3m sponge with water ring it out and then begin sanding make sure you keep this sponge nice and wet it's going to take a rag once i get it all sanded just wipe it off clean take a look at it and see how it looks see if i if there's any deep pockets that i are holes that i need to actually bond oh i was using a medium sanding sponge got it all wet sanded i got a fine sanding sponge here i'm just going to lightly go right dry sanded just lightly to smooth out any more of the ridges around here where it took off all the paint i can still feel just a little bit of the ridges around the edges so i'm actually going to use my fine sponge wet knit and i'm going to wet sand that with a fine 3m sanding sponge so now that we got it all sanded off you

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