{"id":581,"date":"2026-10-21T12:01:26","date_gmt":"2026-10-21T04:01:26","guid":{"rendered":"http:\/\/www.thongtinkinhte.com\/blog\/?p=581"},"modified":"2026-10-21T12:01:26","modified_gmt":"2026-10-21T04:01:26","slug":"what-grit-sizes-are-available-for-non-woven-wheels-4b52-67ec18","status":"publish","type":"post","link":"http:\/\/www.thongtinkinhte.com\/blog\/2026\/10\/21\/what-grit-sizes-are-available-for-non-woven-wheels-4b52-67ec18\/","title":{"rendered":"What grit sizes are available for non – woven wheels?"},"content":{"rendered":"

If you\u2019ve ever walked into a workshop or a metal fabrication shop and seen a soft, fuzzy-looking wheel spinning on a bench grinder or electric tool, chances are it\u2019s a non-woven wheel. As someone who\u2019s been supplying these bad boys for years, I get tons of questions from folks\u2014beginners and seasoned pros alike\u2014asking, \u201cWhat grit sizes actually exist for non-woven wheels, and which ones do I need for my project?\u201d Let\u2019s cut the jargon, skip the formal stuff, and break this down like we chat over a coffee by the warehouse break room. Non-Woven Wheel<\/a><\/p>\n

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First off, let\u2019s clear up a quick misconception right away: non-woven wheels aren\u2019t your standard sanding discs. Those are usually coated with abrasive grit glued to paper or fabric, right? Non-woven wheels are totally different\u2014they\u2019re made from loose abrasive fibers that get bonded into a porous, web-like structure. That porosity is key here; it makes them flexible enough to shape around curves, smooth welds, or even blend finishes without digging too deep into the material.<\/p>\n

Now, grit size. If you\u2019re used to regular sandpaper, you know grit numbers go up as the sandpaper gets finer\u2014like 60-grit is rough for stripping paint, 220 is for smoothing wood, 1000 is for polishing. Non-woven wheels work the exact same way, but the scale is a little more unique, and the grit types don\u2019t always line up with what you\u2019d use on a sheet of sandpaper. Let\u2019s start with the grit sizes themselves, since that\u2019s the main question here.<\/p>\n

For most common non-woven wheels, the grit range spans from super coarse to ultra-fine. Let\u2019s start at the bottom: the coarsest grits you\u2019ll find are often labeled like \u201cVery Coarse 50\u201d or \u201cCoarse 80.\u201d Wait, some brands also use a letter-based system for their non-woven grits, like grade 1 (coarse) all the way up to grade 10 (ultra-fine). A lot of new guys mix that up, so I make it a point to explain both number and letter scales to my customers. The coarse grits (50, 80, grade 1-3) are the workhorses for heavy duty. Think about removing thick weld beads, grinding down rust on steel beams, or stripping old paint off metal furniture. You don\u2019t want to use a fine grit for that\u2014you\u2019d be there forever, and the wheel would gum up in 2 seconds flat.<\/p>\n

Next up are the medium grits. These are the workhorses for most general fabrication tasks. We\u2019re talking 120, 180, grade 4-6. This is what I recommend for guys who are blending welds on a car frame, smoothing out mill scale on stainless steel sheets, or prepping a surface for painting. The medium grits balance speed and finish\u2014they cut fast enough to get the job done, but leave a surface that\u2019s not too rough, so you don\u2019t have to follow up with a super fine grit right away. I\u2019ve had a lot of my regulars tell me medium grit non-woven wheels are the ones they reach for 70% of the time, and that makes total sense.<\/p>\n

Then we get to the fine and ultra-fine grits. These are the ones for finishing work. Fine grits are usually 220, 320, grade 7-8, and ultra-fine go up to 400, 600, or even grade 9-10. This is what you use when you want a smooth, satin finish on a stainless steel sink, polishing aluminum parts for a motorcycle, or blending out scratches on a painted metal surface. The key here is that these grits don\u2019t remove much material at all\u2014they\u2019re designed to refine the surface, not grind it down. A lot of people try to use a coarse wheel for this, and end up with deep scratch marks that take twice as long to buff out later.<\/p>\n

Wait, but here\u2019s a thing most suppliers won\u2019t tell you: not all non-woven grits are the same material. That matters a ton too, because the grit type affects how well it works, especially for different metals. We use two main abrasive types for our non-woven wheels: aluminum oxide and silicon carbide. Aluminum oxide is the go-to for steel, stainless steel, and most common metals. It\u2019s tough, durable, and doesn\u2019t dull too fast when grinding ferrous materials. Silicon carbide is harder, but more brittle, so it\u2019s better for non-ferrous metals like aluminum, brass, or copper, and even stone or glass. So even if you have the right grit size, if the abrasive doesn\u2019t match your material, you\u2019re gonna get bad results. I\u2019ve had customers call me upset because their 120-grit wheel wasn\u2019t cutting aluminum, and it turned out they used an aluminum oxide wheel instead of silicon carbide\u2014simple mix-up, easy to fix.<\/p>\n

Now, let\u2019s talk about how grit size translates to actual performance, because number labels can vary a little between brands. A 60-grit wheel from one supplier might be a tiny bit different than a 60-grit from another, but the general rule holds: lower number = coarser, higher number = finer. But here\u2019s a pro tip I learned after 15 years in this business: the density of the web (how tight the fiber structure is) also affects what the grit does. A coarse grit wheel with a dense web will cut faster than a coarse grit with a loose web, but the loose web is more flexible for shaping curves. So grit size isn\u2019t the only factor, but it\u2019s the starting point.<\/p>\n

I get a lot of beginners asking, \u201cCan I use a 120-grit wheel to finish a surface that was ground with 80-grit?\u201d The answer is usually yes, but you might need to do a little more blending. A lot of pros skip the exact grit sequence too\u2014they\u2019ll use a coarse, then jump to fine, but you\u2019ll get a smoother finish if you go medium first. It\u2019s like sanding wood: you don\u2019t jump from 60 to 220, you go 60, 120, 220. Same logic with non-woven wheels.<\/p>\n

Another common question: \u201cWhat grit do I use for polishing chrome?\u201d That\u2019s one of my go-to answers. You want an ultra-fine grit\u2014usually 400 or 600, silicon carbide. Coarser grits will leave too many deep scratches, and chrome is super thin, so you don\u2019t want to remove much material at all. I\u2019ve had a customer who restores vintage motorcycles tell me our 500-grit silicon carbide non-woven wheels are the best thing he\u2019s used for polishing gas tanks without wearing through the chrome.<\/p>\n

Now, let\u2019s talk about when to pick which grit, because that\u2019s what really matters, right? Let\u2019s run through a few common scenarios:<\/p>\n