Sandflex Sanding Block - 3 Pack

These sandflex blocks work unbelievably well. I was surprised just how well they removed rust and stains from metal of all kinds. I'll be purchasing more when they ware out, but it seems like that won't be for a good while. Highly recommended.

Why did you pick this product vs others?:Size and grit

I like these things. Bought them to clean up the body of my low angle block plane from rust and build up. They worked very well and didn’t mar or scratch the metal surface. Not for chrome surfaces. They are surprisingly good for what I needed. Glad I bought the three pack. I thought I only needed the “fine” grit but the coarse and medium grits also worked well and came in pretty handy.

These are effectively large, hard erasers with some grit in them. If you're old enough you'll remember the red-blue erasers - these are like the blue side, but more gritty.They are meant for "erasing" surface rust, dirt and small scuffs from metal and similarly hard materials, which they do well. That being said, they're a bit on the gummy side and get consumed quite quickly - I would prefer them to be a bit harder.Do not buy these as a replacement for sandpaper for woodworking - you will be disappointed, that's not what they are for.

It says to use them like an eraser and that's what they feel like in use. I feel the rubber not the grit. They are for cleaning rather than metal removal. The fine block is a good substitute for crocus cloth if I have places that are hard to get at.They are not nearly as aggressive as silicon carbide paper on a block and they don't leave deep scratch marks either. Just stroke it over work. No use pushing hard because it doesn't change the cut. I think the grit pushes back into the rubber. They clean quickly and leave a nice finish, even the course one.The great thing about these is that if I have an irregular shape to clean I can just press the block to it and the block will wear to the shape. Easy. It does work that would be very difficult with sandpaper. I have cut pieces off a block with a utility knife for special little jobs.You won't regret buying these.

I love these blocks. They are like an eraser with grit in them. Just like the description says, they don’t clog or dull. They wear away like an eraser too, but not really fast. I’ve never tried them on wood. I use them to polish scratches out of aluminum. I haven’t used the coarser grits yet but the fine block works perfectly on brushed aluminum. You’ll never get a mirror shine, but it’s perfect for the brushed look. It is a slow process but with patience and hundreds of strokes you can restore something that’s lightly damaged back to new. Above are before and after shots of a threshold I polished with the fine block. It took about ten minutes. The circles around the screws are from the vacuum attachment on my roto-hammer rubbing concrete dust into the aluminum. They’re still faintly there in the after shots but I know they would’ve come out completely if I had a little more time. I’ve probably used the fine one I got at work for 2 hours of sanding time and it’s not worn away much. The corners are rounded a little and I cut one end at about ten degrees so it gets into corners. It’s the one in the picture. I got it from a guy at work and liked it so much that I bought three new sets and gave him a new fine one to replace his because I cut it and used it a bunch. They’re amazing. I can’t wait to try out the medium and coarse blocks.

Exactly what my husband needed for his workshop.

Wow these are great. I bought a wood lathe that had been sitting around for years so everything had a layer of surface rust on it. In the picture, I had not touched the top rail so that's what the bottom one looked like. I used all 3 grits and finished with a bit of mineax finishing paste. Now the rails look like new and the banjo and tailstock slide perfectly. 5 stars are not enough. I would definitely recommend these for anybody who needs to clean up surface rust from tools.