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Your cart is empty.The DEWALT DWA4242 Diamond Flush Cut Oscillating Blade features Diamond Grit, a synthetic diamond coating for long life in tough applications. This blade is a purpose blade commonly used for grout removal - flush cut design. The DEWALT Diamond Flush Cut blade offers UNIVERSAL FITMENT which allows for use in most oscillating tools.
Jeff
2025-08-27 15:08:17
For me, this just became the hands down, perfect blade for cutting through cementitious plaster walls. I have a 1939 built house that I am rewiring, and finally got sick of using a sawzall to open up the walls to run wire. A sawzall ended up doing more damage as I cut through one side of each lath, and then started cutting on the opposite side of each lath, and the vibrations ended up ripping out more plaster than I intended.I burned up 3 bimetal blades on my Multi-tool, and didn't even get one opening cut, before deciding to give this Diamond blade a try. For $10 it was worth a try.I have a really high cement and fine aggregate makeup to my plaster walls with no wire reinforcing, and this blade is perfect for my application. Clean, easy cuts through the plaster, then I have to switch out to the wood blades to get through the lath, but it became an infinitely easier job with better results.I cut (6) 12"x12" openings initially (so 24 lf of cement plaster) and I cannot tell any sign of wear. That alone is worth the $10 per blade.
DIYer
2025-08-02 18:16:44
definitely make sure you have the right blade for cutting plaster. This one works pretty well. i am cutting out pieces for repair as well as holes for outlets. they can cut 3-4 outlets then start to dull in my use. I switch to a wood blade once I get to the lathe. If you use the wrong blade you'll make a big mess, ruin the blade, and still not have your hole.
Timmy
2025-08-01 10:26:51
This works with Ridgid tools and works really well. However, it does not last if you have lots of grout to remove and will heat up quickly causing it to chip or break. So be sure to order extra. Mine handled about 12 inches of a 1/16th wide grout line. Mine also broke at the head but can still function (see photo). It does work between 1/16th inch gaps and will also cut tile at a slow pace. Obviously you need to use caution when using anything that has a blade moving at high speeds, but be careful especially in tight corners and tiles being close together. This should be the tool that handles the work in the open while a manual hand grout removal tool should be for corners and corner joints.
haley m.
2025-07-19 18:58:49
I bought this to remove mortar around some bricks. It was exactly half price on amazon compared to lowes . It came in 2 days and boy does this blade eat through mortar . Wow I highly recommend this
MikeD
2025-05-16 16:25:51
Bought it to remove excess thin set from some 1/16 and 1/8 porcelain tile grout joints and it worked well for that. Much faster than a utility knife if you have a decent amount to remove. Fit great on my DeWalt 20V oscillating tool.
Alan J. Lee
2025-05-03 18:35:02
I love the concept of this blade but it didn't hold up very long. It was great for removing grout and thinset. If you need to use it for spot applications I highly recommend it. If you need something for continued heavy duty use, this isn't the blade for you.After about 45 minutes of stop-and-go usage removing thinset and grout from the back side of tile I wanted to reuse, the diamond coating started chipping away. Having about half the diamond coating left, I continued working with one end of the blade. After maybe 10 more minutes, the blade itself began to break apart. I was disappointed to say the least because the blade was working very well on the grout.
K
2025-03-24 15:06:26
Do not recommend! This blade is useless. It. hardly even scratched our porcelain tile, much less cut anything. And we have a nice oscillating saw that we used it with. Disappointed.
Bob
2025-03-14 16:10:14
Works perfect on cement board
Mario Eloy Morales Blanco
2025-02-15 21:20:48
Muy buena calidad
RJ OAKLEY-WATSON
2025-02-09 13:07:58
Good tool.
Paul
2025-02-04 10:39:41
Exactly what I was looking for - a flush cut bit that I couldn’t find anywhere! Worked awesome and still has some ‘meat’ on it.I saw some reviews abt ppl saying it doesn’t last long - well a tank of gas doesn’t last forever either. It’s life expectancy lasted longer than I would have guessed. Would definitely purchase again.
Tim O'Connor
2025-01-20 18:50:02
,mkmmjj
Jorge
2024-11-27 17:09:44
Exelente navaja y resistente la uso para cortar muros y es muy resistente
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