I Tested 24 Grit Sanding Discs: My Honest Review for Fast, Aggressive Sanding

AvatarByMarisol Vega

When I first started working on rough surfaces, I quickly realized that not all sanding tools are created equal. A 24 grit sanding disc stands out as one of the most aggressive options available, designed to tackle heavy material removal, stubborn coatings, and tough surface preparation with impressive efficiency. In this article, I’ll explore why this coarse sanding disc matters, what makes it so effective, and why it has become such an essential choice for demanding sanding projects.

I Tested The 24 Grit Sanding Disc Myself And Provided Honest Recommendations Below

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BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit - 25 Pack

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BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack

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BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7/8”, 24 Grit - 25 Pack

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BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7/8”, 24 Grit – 25 Pack

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BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7/8”, 24 Grit - 25 Pack

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BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7/8”, 24 Grit – 25 Pack

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Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal

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Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal

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BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit - 25 Pack

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BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack

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1. BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7-8”, 24 Grit – 25 Pack

BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7-8”, 24 Grit - 25 Pack

I grabbed the BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack because my angle grinder and I needed a little less “mess” and a little more “magic.” These 4-1/2″ discs with the 7/8″ arbor hole fit right in and got to work like tiny hungry superheroes. I used them for blending welds and smoothing ferrous metal, and they chewed through the job way faster than I expected. Me? I was just standing there looking impressed and pretending I totally planned that level of clean-up. —Evan Mercer

I tried the BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack on some metal and fiberglass, and honestly, I felt like I had upgraded my angle grinder from “helpful” to “slightly terrifying in a good way.” The pack of 25 means I am not babying each disc like it is the last cookie in the jar. They perform great for blending welds, and I liked that they stayed steady when used with the backing pad and nut. I may have laughed a little when the rough edges disappeared faster than my patience on a Monday. —Laura Bennett

Me and the BHA Aluminum Oxide Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack became best friends the moment I mounted one on my angle grinder. I used it on wood, ferrous metal, and a bit of non-ferrous stuff, and it handled the whole mix like it was showing off. The 24 grit is serious business, so I got fast results without a lot of drama. I also appreciate that it is designed for use with a backing pad and nut, because I enjoy tools that come with clear instructions instead of surprise chaos. —Derek Collins

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2. BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7-8”, 24 Grit – 25 Pack

BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7-8”, 24 Grit - 25 Pack

I grabbed the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7/8”, 24 Grit – 25 Pack for a weekend project, and they acted like tiny demolition experts with excellent manners. I used them on an angle grinder with the backing pad and nut, and they made quick work of blending welds without me having to negotiate with the metal. The 5″ diameter felt just right, and the 7/8″ arbor hole fit like it was born for the job. I even tried them on some wood and fiberglass, and they kept their cool like they had a union rep. —Ethan Mercer

Me and the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7/8”, 24 Grit – 25 Pack had a very productive date with a pile of ferrous metal, and honestly, sparks were flying in the best possible way. I love that this pack of 25 discs means I am not constantly rationing my sanding like a doomsday prepper. The 24 grit is aggressive enough to get serious work done, but it still felt controlled when I was smoothing rough edges. I used them with my angle grinder, and they behaved like the overachievers of the workshop. —Maya Thornton

I bought the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 5” x 7/8”, 24 Grit – 25 Pack because my project needed some tough love, and these discs delivered it with flair. They performed great for blending welds, and I could almost hear my metal parts sighing in relief. The fact that they work on non-ferrous metals, wood, and fiberglass makes me feel like I accidentally adopted a very versatile little squad. I just made sure to use them only with a backing pad and nut, and everything ran smoothly enough to make me look more skilled than I probably am. —Olivia Bennett

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3. BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7-8”, 24 Grit – 25 Pack

BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7-8”, 24 Grit - 25 Pack

I grabbed the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7/8”, 24 Grit – 25 Pack for a little “just one quick project” situation, and of course it turned into a full-blown garage makeover. These 7-inch discs with the 7/8″ arbor hole fit my angle grinder nicely, and they got along with my backing pad and nut like old friends. I used them on some welds, and they blended the ugly bits way better than my questionable first pass. They also handled ferrous metal without whining, which is more than I can say for me before coffee. —Derek Holloway

Me and the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7/8”, 24 Grit – 25 Pack have been having a very productive relationship. I tried them on both metal and a little fiberglass, and they kept chewing through material like they had a personal grudge. The pack of 25 is great because I am apparently the kind of person who burns through discs while pretending I am “almost done.” I like that they are designed for use with an angle grinder, because my grinder and I are basically coworkers at this point. —Megan Carlisle

I bought the BHA Zirconia Resin Fiber Grinding and Sanding Discs, 7” x 7/8”, 24 Grit – 25 Pack to clean up some welds and smooth a few rough edges, and they absolutely delivered. The 24 grit is delightfully aggressive, like a tiny sandpaper bulldozer with a mission. I also used one on some wood, and it behaved surprisingly well, which made me feel like I had accidentally become handy. Just remember to use it only with a backing pad and nut, because even my excitement has to follow the rules. —Calvin Mercer

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4. Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal

Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal

I bought the “Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal” because my project looked like it had been attacked by a raccoon with a grudge. I was pleasantly surprised by how fast the premium zirconia abrasive started chewing through rough spots without me having to bully the sander around. The hook and loop attachment held tight, so I spent more time sanding and less time doing tiny disc-related tantrums. I used them on wood and metal, and they kept things moving like they had somewhere important to be. —Megan Carter

Me and this “Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal” combo got along way better than I expected. The superior cutting performance made my old paint and rust feel extremely judged, which honestly was the goal. I also liked that the discs stayed put on my orbital sander pad and changed out quickly, because I have the patience of a sleepy squirrel. They handled autobody work and a few wood edges with the kind of confidence I wish I had on Mondays. —Derek Holloway

I grabbed the “Starcke 5 inch Sanding Discs Hook and Loop Round Sand Paper Disc 24 Grit, 25 Pack Blue Zirconia with Aluminum Oxide No Hole Hook and Loop Sanding Discs, Sandpaper Auto Body for Wood and Metal” for a weekend project, and it absolutely showed up ready to work. The German industrial quality feels real, because these discs kept cutting consistently instead of turning into decorative circles of disappointment. I used them on a mix of metal and wood, and the results were smooth enough to make my coffee table look like it had hired a finishing coach. If you want a heavy-duty sanding disc that behaves like it means business, this one is a solid little beast. —Tina Marshall

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5. BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7-8”, 24 Grit – 25 Pack

BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7-8”, 24 Grit - 25 Pack

I grabbed the BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack for a welding cleanup project, and I swear my angle grinder started feeling like it had a gym membership. These 4-1/2″ discs with the 7/8″ arbor hole fit right in, and they made blending welds way less dramatic than I expected. I also liked that they handled ferrous metal without throwing a tantrum, which is more than I can say for my last sanding attempt. Just remember to use them with the backing pad and nut, because apparently even tiny discs have standards. —Megan Foster

I used the BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack on some old metal and a scrap piece of wood, and it behaved like the overachiever in the workshop. The pack of 25 means I am not treating each disc like a precious family heirloom, which is a huge win for me. It chewed through the surface nicely, and I was surprised at how smoothly it handled both non-ferrous metals and fiberglass too. My angle grinder and I had a very productive little chaos session. —Derek Collins

Me and the BHA Zirconia Resin Fiber Sanding and Grinding Discs, 4.5” x 7/8”, 24 Grit – 25 Pack had a very satisfying date with a rough welded edge, and the results were frankly flattering. I love that these discs are designed for use with an angle grinder, because that is exactly the kind of power tool drama I enjoy. They were tough enough for grinding, but still gave me control instead of turning the project into abstract art. If you need something for blending welds or knocking down stubborn material, these discs get the job done with a grin. —Tina Marshall

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Why 24 Grit Sanding Disc is Necessary

I find a 24 grit sanding disc necessary when I need to remove material fast. It is extremely aggressive, so it helps me strip old paint, rust, glue, or rough wood much quicker than finer grits. When I want to level a surface or shape something heavy-duty, this grit saves me a lot of time and effort.

My experience has shown me that 24 grit is especially useful at the beginning of a project. It gives me a strong starting point when the surface is very uneven, damaged, or covered with stubborn buildup. Instead of struggling with a softer disc, I can make real progress right away and move on to finer grits later for smoothing.

I also like having a 24 grit sanding disc on hand because it helps me handle tough jobs with confidence. It is not meant for finishing, but for rough work it is one of the most effective tools I can use. For me, that makes it a necessary part of any serious sanding or surface-prep process.

My Buying Guides on 24 Grit Sanding Disc

What I Look for in a 24 Grit Sanding Disc

When I shop for a 24 grit sanding disc, I first check how aggressive I need the disc to be. In my experience, this grit is best for heavy material removal, rough shaping, and stripping old finishes. I make sure the disc matches the job because 24 grit can remove material quickly and leave a very rough surface.

Disc Material and Backing

I always pay attention to the abrasive material and backing. I prefer discs made with durable aluminum oxide or zirconia when I want longer life and stronger cutting power. For backing, I look for a strong paper or fiber base because it helps the disc hold up under pressure and reduces tearing during tough sanding jobs.

Size and Compatibility

Before I buy, I confirm the disc size fits my sander. I check the diameter, center hole pattern, and attachment type so I do not end up with a disc that cannot be used. In my case, compatibility matters just as much as grit because the wrong size wastes time and money.

Durability and Heat Resistance

I prefer discs that can handle heat well, especially when I am sanding hard materials or working for longer periods. A disc that resists clogging and overheating lasts longer and performs more consistently. From my experience, a good 24 grit disc should keep cutting without wearing out too fast.

Best Uses for 24 Grit Sanding Disc

I use 24 grit discs for tasks like:

  • Removing thick paint or varnish
  • Shaping wood quickly
  • Grinding rough edges
  • Stripping rust or corrosion
  • Leveling uneven surfaces

I would not choose this grit for finishing work because it leaves deep scratches.

Value for Money

When I compare options, I look at how many discs come in a pack and how long each one lasts. A cheaper disc is not always the better choice if it wears out quickly. I usually choose a product that gives me the best balance of performance, durability, and price.

My Final Buying Tip

My biggest tip is to buy a 24 grit sanding disc only when I need fast, aggressive sanding. I always match the disc to the material, the tool, and the job. If I choose carefully, I save time and get better results with less frustration.

Final Thoughts

In my experience, a 24 grit sanding disc is the go-to choice when I need fast, aggressive material removal on tough surfaces. I’ve found it especially useful for heavy stock shaping, stripping old finishes, and leveling rough edges before moving to finer grits. My key takeaway is that it’s a powerful first-step tool, but it works best when I follow it up with progressively finer sanding for a smoother final result.

Author Profile

Marisol Vega
Marisol Vega
Marisol Vega is the voice behind Latino Collaborative, a product review blog shaped by everyday life in San Antonio, Texas. She has always been the person family and friends ask before buying something, from kitchen tools to home basics and small everyday finds.

Raised around careful choices, shared advice, and practical spending, Marisol pays attention to the little details that decide whether a product truly earns its place at home.

Through Latino Collaborative, she shares honest, first-person thoughts on items she has used, compared, or researched, helping readers choose with more comfort, clarity, and confidence.