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DEWALT Dado Blade Set, 8-Inch, 24-Tooth (DW7670)

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$178.35

$ 73 .99 $73.99

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  • 8IN STACKED DADO SET
  • 8IN STACKED DADO SET
  • 8IN STACKED DADO SET
  • 8IN STACKED DADO SET
  • 8IN STACKED DADO SET


Product Description

DEWALT DW7670 8IN STACKED DADO SET.

From the Manufacturer

The DEWALT DW7670 8-Inch Stacked Dado Set has heavy gauge, laser cut plates that provide true, accurate cuts. The micro-grain carbide teeth deliver clean cuts and reduce splintering. It has 4 tooth chippers that give smooth, flat bottom cuts and stainless steel shims that allow for ultra-fine width adjustments. It includes a heavy duty storage case that protects the blades against chipped teeth and damage. This blade is ideal for quality-conscious woodworkers, cabinetmakers and woodworking professionals. It makes clean, smooth dado cuts, rabbet cuts, tenons, and half-lap joints in hard woods, soft woods, plywood, and melamine. Diameter 8-inch, Teeth 24, Arbor Size5/8-inch, Hook Angle -12-degree, Tooth Grind ATB+R, Max Speed 7000rpm, Number of Chippers 6, Chipper Sizes, (4) 1/8-inch, (1) 1/16-inch, (1) 3/32-inch


rodelco
Reviewed in the United States on January 20, 2025
I am very happy with this dado set. The storage case does a great job of keeping the blades and chippers separated so they don't damage each other. The dados are very clean, and it works fine with my Professional Saw Stop.
Poetrof
Reviewed in Canada on April 1, 2024
Good first impression with Bosch table saw. Clear 1/4 dado cut edges on prefinished plywood, as sharp it came from factory. The dado with was nicely adjustable with the provided shims. The dado bottom could be " more flat" but still acceptable.
Kevin B
Reviewed in Canada on August 6, 2023
I had my doubts from reviews on mismatched cutter sizes and being too large for the sawstop brake.Fits the sawstop professional just fine. Stacked up to almost 1” it ran true and cut very very clean both on the wings and flat on the bottom.The hard case is quite well organized with sections for everything. Slightly annoying that the cutters all stack so you need to swap through some portion of the stack every time unless you always or never use the 1/16 and 3/32 cutters.Honestly, it’s the nicest set I’ve owned and that includes one that cost twice as much.
Brad Wilson
Reviewed in Australia on July 30, 2023
This works well in my dewalt bench saw. It has to be 8 inch blades to fit. Don’t search for 10 inch Datto blades as the dust shields will not take them.
Carl
Reviewed in Canada on July 16, 2023
I read a number of reviews before investing in the Dewalt set of dado blades. Yes, they do come at a cost but after a few uses I can easily say that I'm quite satisfied. This set of dado blades is a great addition to my shop. They provide really accurate and clean cuts. Each part is well identified from the various blades to spacers. The set also comes with a very good carrying case that provides protection and easy storage for your set.
The Phantom
Reviewed in Australia on July 29, 2021
Great product does a neat and accurate cut
PresidentsDad
Reviewed in the United States on March 20, 2020
This 8 inch stacked Dado set is absolutely the best value for the money. It comes with two outer blades and 6 Chippers (4) 1/8-inch, (1) 1/16-inch, (1) 3/32-inch and 4 each of .005, .010 and .020 shims. All comes is a very nice case! For about a "C" note you get a smooth running, smooth cutting dado set. This is probably better than the entry level Freud sets, but maybe not 100% as good as the higher line of Freud sets, but it's also about 80 buck cheaper than those sets. I see no reason to spend the extra money. Also, even though my mid-90s Delta Contractor Saw states to not use 8 inch sets, it seems to run just fine, no stalling, no hesitation, no complaints whatsoever from my saw. This is a great set, you will not regret buying it.
chiwi
Reviewed in the United States on February 5, 2016
De Walt stuff generally is pretty good so although I haven't used it yet, I expect it'll live up to its reputation. Of course you pay for that however (in my case) I have to balance that against the fact that it isn't available locally (or if it is it'll cost an arm, a foot and my first born). The "Made in China" on the packaging does however put a question mark under that.What did surprise me was that there are a couple of different thicknesses of chipper blades. I had assumed that they would be all the same thickness. I was also pleased to note that the shims have their thickness printed on them (weirdly, all except two of the 0.010"). Being in a metric country, I will of course have to put labels into the case for the metric equivalents - not a big deal.Another slight weirdity is that thicknesses are given for all chippers and shims but not the main blades themselves which merely states their diameter. It is possible to infer from the dado widths shown on the packaging that the smallest dado is 1/4" inferring that each blade is 1/8" thick. It would have also have been nice if the visual dado width chart had been included on a piece of paper as opposed to being printed on the outside of the disposable packaging.The purpose of the shims of course is to widen the dado being cut. It's my intention to pair the dado set with the KM-1 Kerf Maker from Bridge City Tool Works... well sort of. Let me explain all of that... Readers familiar with dado sets will know that it can take quite a lot of trial and error to cut a dado to the exact width required. There's test cuts, adding and removing chippers and shims etc so it can be quite a drawn out process. What's needed is a jig that can allow for the blade width and take into account the width of the dado required. The KM-1 does this.Now, although I'd like to actually buy a proper KM-1, being on the other side of the world means there's a whole bunch of things which simply aren't available to me (that has to be balanced against not having any nuclear tipped missiles pointed at us). There is however a couple of guys on YouTube who has actually made a home built version of the KM-1. Okay, its not precision machined etc but homemade versus not being able to get one at all still wins hands down. The only tricky part to watch is that the dado blade width has to be markedly narrower than the desired dado (this sounds weird but take my word for it, this is the way it works). This however ties in neatly with the fact that my saw arbour (like many other saws) is too short to support the full dado stack,I should also mention that you can use the KM-1 with single saw blades as well as other machines such as routers and bandsaws so it's by no means a "one-shot" tool.I'll post a follow up later (if warranted).Addendum 1:Well it took a while but I finally got the opportunity to start matching the dado set with my table saw (actually a job site saw). The manufacturers blade comes with two thick customised washers that sandwich the blade into place.. The locking lever for the arbour protrudes into this space so it was necessary for me to follow suit and also pack out the dado blade(s) with washers.I must admit to being disappointed as I could barely get a dado width above 1/4" (1/4" plus 1/32")... barely worth while having a dado set at all. The limiting factor being of course the length of the arbour. Luckily I managed to find some thinner washers (which also had the advantage of having much less slop than the first set).The second set of washers allowed me to 'cram' a 1/2" dado onto the arbour which was about all I could hope for. I used the word cram as there's literally no excess threading showing on the arbour. I must admit that having such a low excess safety factor does concern me slightly however I don't consider this situation to be dangerous. If there was even a hint of that I wouldn't proceed further. You can't be too careful with something spinning at 38,000 RPM.The`thinner washers do change the zero on the measuring tape but I figure when cutting dados that this will be largely irrelevant. Also the clearance between the blade and the arbour lock is reduced to a double thickness of paper but as far as I can tell there's no actual contact so I think I'll be okay.As for the`dado set itself, the blade fit on the 5/8" arbour is so exact that it's almost (but not quite) a press fit. All blades and chippers mount onto the abour such that the teeth form a horizontal line just as you'd expect. It might be just my imagination but it seems to me that the outer blades are somehow "beefier" than a standard table saw blade... or maybe I've been sniffing the sawdust too much.So I'm at a point that I can fit a 1/2"dado to the table saw which is the most that I was aiming for. There's no way I could put on a full dado stack but I knew that before I purchased the set. I should note that the chart on the disposable packaging only shows dado widths up to 29/32" so being able to do half of that is a reasonable outcome.I'll post an update when I've had an opportunity to try it out properly.Addendum 2:After having used it now, I've found that there are positives and negatives.To start, my plan to use it in 1/2" configuration didn't go as intended. Yes, it does work but only for a short while then the arbour nut loosens and its no longer usable and even worse no longer safe. It appears that any configuration that doesn't include the factory supplied arbour washer is dodgy. Given the thickness of the factory supplied arbour washer, 1/2" isn't achievable. I'd estimate in this configuration that 3/8" is the maximum achievable thickness. I wonder if I were to get a machine shop to clone the factory supplied washer but thinner whether this would work. I'll think about that one.The other disappointment was with the dado itself. I have no previous experience with dado stacks hence I don't have anything to refer back to. It had been my expectation that when using a dado stack that the bottom of the dado would be perfectly flat. In practice this is not the case. What I found was that the blade cut leaves what I'll call "striations"... effectively noticeable grooves in the direction of travel.The teeth on the blade are not all flat topped but alternate between flat and bevelled. So it appears that one or more of the bevelled teeth is higher than the others. When one examines the teeth more closely, it is possible to see where protruding teeth have been ground down. So the only possible conclusion is poor quality control.I'm sure that one could take this to a good engineering workshop and have this corrected. However given that De Walt is a premium brand for which the consumer pays a premium price, quality control on this level simply isn't good enough. It appears that De Walt is satisfied with trading on its past reputation but content to slide into the "also-rans".
R. Chandler
Reviewed in the United States on February 1, 2008
This is the best dado set for the money out there! this is my 4th dado set, including a freud set. this set has a 4-wing chipper, and has marked shims and is easy to set up. I have been well pleased.The case is really nice as well, and keeps all the parts secure for storage.Delta also puts their label on this same set. From what I've been told by factory reps, this set was highly researched among woodworkers and cabinet shop operators with an eye on getting it right and affordable. In my opinion they succeeded! I have used this dado set for building cabinets for a bathroom remodel, and every dado and rabbit cut has been very accurate and without chip - in red oak. This is a better set than the freud pro set I have, and also the old style delta that I owned. The set-up is easy with all the chippers and shims clearly marked with fractional thickness identifiers. Really good stuff! Highly recommended!There are other dado sets on the market that are just as good, but they are very pricey. Some sell for nearly $300.00 or more.
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