Freud Dado: SD508 or D208???

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Forum topic by dlux posted 04-02-2009 05:28 PM 6282 views 0 times favorited 9 replies Add to Favorites Watch
View dlux's profile


54 posts in 2850 days

04-02-2009 05:28 PM

Topic tags/keywords: question blade

Tomorrow is the last day of Rockler’s 25% off all dado sets. Since this is a great deal, I’d love to get a Freud as I know it’s of quality that will last me a long time.

I’ve got enough pennies to get the 508 set, but not sure if it’s worth spending the extra pennies. In your opinon, is the 508 worth the extra money? Why??

As always, thanks!!!!

9 replies so far

View CharleyL's profile


190 posts in 2781 days

#1 posted 04-02-2009 09:38 PM

A larger blade can cause problems if you have an undersize saw motor. Dado blades need to remove a lot of material and this can be hard on the saw. A smaller diameter dado blade will give the motor a beter chance. Besides, how often do you need to cut a 2” deep dado. Most dados run in the less than 1” category and this will be no problem for the smaller blade.


View knotscott's profile


7144 posts in 2792 days

#2 posted 04-03-2009 01:36 AM

The SD208 is a good set. It’s well made, reasonably priced, and you’ll get good results. I ran it with no issues on my little Delta 36-600, my GI 50-185, and my Craftsman 22124. The SD508 is a great set. It has twice as many teeth, which leaves a smoother cut, and the teeth share the load so it’ll hold an edge longer. Having gone from the SD208 to the DeWalt DW7670 to the Systimatic 8S42 Superfine to the Infinity Dadonator, I’d recommend going with the better set to start with…hard to imagine you having any regrets about an upgrade unless the money means sacrificing something else that’s important. You might even consider going with the 7670 set…Grizzly has it for $90 plus s/h, it also has twice as many teeth as the SD208, and it makes a cleaner cut…IMHO that’s the better bang for the buck in the $90 price range.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View Francisco Luna's profile

Francisco Luna

936 posts in 2810 days

#3 posted 04-03-2009 01:47 AM

508 has better reviews at amazon…...

-- Nature is my manifestation of God. I go to nature every day for inspiration in the day's work. I follow in building the principles which nature has used in its domain" Frank Lloyd Wright

View BlankMan's profile


1488 posts in 2769 days

#4 posted 04-03-2009 02:17 AM

I have the 508 and it’s worth it. I picked it up a few years ago after using Delta’s set for years because it produces flat bottom dadoes, no score marks. As mentioned, it has 24 teeth verses 10, 4 teeth per chipper instead of 2, and a 3/32” chipper which the 208 doesn’t have. That 3/32” chipper gives you at lot more options for dado width, easily, without using shims. I’d (and I did) opt for the 508.

Not exactly sure what Charley was referring to since both sets you referred to are 8”, but on my Unisaw if I used a 6” dado my maximum depth would be 1”, with the 8” that maximum is 2”. I have cut over the 1” mark, not always to cut that depth dado, but for instance to cut a rabbit on thick stock, or to make a tenon on thick stock when the piece is too long to stand up and use the tenoning jig, and think of offset tenons on thick long stock.

It also comes in handy to do lap joints on my RAS.

And it’s a Freud quality blade and carbide, not Chinese or Taiwanese.

-- -Curt, Milwaukee, WI

View FEDSAWDAVE's profile


293 posts in 2848 days

#5 posted 04-03-2009 02:49 AM

dlux, 25% off of what? It seems we’re all the same price on the SD508. Their site, my site. Am I missing something here? They do not have freight free shipping. As a master Freud distributor….as Monty Hall would say: “Lets make a deal!”


-- David,

View dlux's profile


54 posts in 2850 days

#6 posted 04-03-2009 05:53 AM

Thanks for the input!

Dave, It’s in their monthly ad, so they’ve been on sale all month for 25% off. I found that they don’t put their ad prices on the web. Tomorrow’s the last day and it’s limited to the stock that they have on hand.

Good luck!

View spaids's profile


699 posts in 3110 days

#7 posted 04-03-2009 02:42 PM

I have the 208 and it works well but…. BAT EARS! It makes nice flat bottom dados with tiny little groves in the corners where the outside blades aren’t exactly flat ground. Why would anyone ever buy a dado stack for through cuts? It’s good if your on a budget and most of us are. I’m a rookie and didn’t understand the extra $ for the upgrade. Now that I know I still don’t think the quality of my work justifies the extra $ but those little scratches do drive me nuts. If you look at my first project using this blade
you can see in the close up that there are little ticks marks in the corners of the dados (box joint). I also made the lid for this by simply cutting dados around the edges of the lid so it would sort of sit down in the box. Thats where the scratches REALLY burn. You lift the lid and there are two scratch lines running the perimeter of the under side of the lid. I haven’t tried the upgraded version but If you willing to spend the $ now its probably worth it.

-- Wipe the blood stains from your blade before coming in.--

View knotscott's profile


7144 posts in 2792 days

#8 posted 04-03-2009 04:15 PM

Hi spaids – Those bat ears you described are caused by the alternate top bevel grind (ATB) of the outside cutters. That grind is used on the cutters of most good dado sets because it offers less tearout than a flat grind, which is the only grind that will leave truly flat bottoms. Some sets alternate some flat top teeth with the ATB teeth to reduce the size of the bat ears so they’re barely noticeable…Infinity, CMT, and Amana come to mind….not sure about the SD508.

A box joint cutter set uses 100% flat top grind (FTG) so you won’t have the bat ears and is a good choice for box joints, although they have more tearout on the back side of the cut. Freud, Infinity, Oshlun, and Forrest are a few names that offer a box joint set.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View sikrap's profile


1121 posts in 2775 days

#9 posted 04-05-2009 06:12 AM

Waaahhh!!!! I could have gotten the Oshlun for $67.49 delivered??! Waaahh!!

-- Dave, Colonie, NY

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