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post #1 of 63 (permalink) Old 01-03-2013, 03:05 PM Thread Starter
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Default Dado-confused...

I am looking for a dado set...needs to be stacked (mfg recommendation), 5000rpm, 5/8 arbor, carbide teeth, cleanest cot for the money...

My confusion is more about "tooth" than anything else...all I will use it for is shallow stuff...box joints, shelving, etc... What blade "xx-tooth" should I be looking for...?

Thanks in advance...Nick
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post #2 of 63 (permalink) Old 01-03-2013, 03:20 PM
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If your requirement is indeed only for box joints, then look at the Freud box joint blade set. It's basically two blades which positions are switched to get an alternative thickness of cut.

Don't worry about the teeth as the manufacturer has already worked this out for you.


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post #3 of 63 (permalink) Old 01-03-2013, 03:36 PM
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I'd get as good a dado set as you can afford. A 6" is all you need. As Hilton said, the manufacturer uses the optimum number of teeth for their specific sets.
Making box joints with a dado set can be problematic. I know of no manufacturer that produces a set that yields truly flat bottomed dadoes. There might be one, I just don't know of one. Mine is out to a sharpening shop, where the outside cutters will be ground to match the chippers.
The Freud set that Hilton referenced will give you flat bottoms. It is OK if all you will ever need is 1/4" and 3/8" dadoes.

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post #4 of 63 (permalink) Old 01-03-2013, 03:55 PM Thread Starter
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Thank you...will need 1/2 for box joints and 3/4 for other stuff...
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post #5 of 63 (permalink) Old 01-03-2013, 08:20 PM
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Forrest, CMT, Amana, and Freud all make top of the line sets. There are options available from 6" to 8" and 12 tooth to 24 tooth. More teeth and/ or larger diameter requires more power. Stacked sets usually have several 1/8" cutters and one 1/16" cutter. Shims are available for fine tuning. Lee Valley sells a set up here.

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post #6 of 63 (permalink) Old 01-03-2013, 08:33 PM
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I make musical instrument speaker cabs, box joints are a tradition "Fender".
Though I have things dialed in with a simple jig.
This is what I have to end up with-.005" clerance between mating fingers-otherwise they will not go together.
I use a 8" Freud dado set- cut two sides, then add a shim for the ends, to gain the clearance.
With that set, I get flat bottoms.
Now, I dont understand how to get the clearance, using a router, or the box joint saw blades.

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post #7 of 63 (permalink) Old 01-03-2013, 10:27 PM
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I presently have what, six 8" dado sets? (pro standard and finish grade) Ranging from $40 to $470... And another on it's way from Laguna. Embarrassingly, I seem to have acquired saw blades like Bob has routers. But it "has" been spread out over 40 years.

Don't buy a $40 dado set. You'll be frustrated and not satisfied with the quality... Especially if you're trying to do fine box joints or expecting a finish quality spline. They will need resharpening often.

Don't buy a $400 dado set, unless you are so inclined. The quality is surely there, but I've found that same quality for less money, in other sets.

Frued is great. Huge carbide teeth that can be resharpened again and again. Although they do seem to hold their edge for a long time. Over lapping tooth design that creates a very sooth spline..

The best bang for the buck I've found for a low-end finish dado:
Dado Set, 8" x 42 Tooth w- 6T chippers, Oshlun SDS-0842 - Carbide Processors
...But not a good match if you have an underpowered saw.

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post #8 of 63 (permalink) Old 01-04-2013, 07:00 AM Thread Starter
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Quote:
Originally Posted by cagenuts View Post
If your requirement is indeed only for box joints, then look at the Freud box joint blade set. It's basically two blades which positions are switched to get an alternative thickness of cut.

Don't worry about the teeth as the manufacturer has already worked this out for you.


Thank you, Hilton but I need to cut up to 3/4 for shelving, etc... The part about the mfg and teeth is a bit confusing...are you referring to blade mfg or my saw mfg ? I see same blade mfg with different tooth count. In general I think I have seen references to "more teeth, more hp needed"... I have a 10 inch, 15 amp Motor (2+hp ?)
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post #9 of 63 (permalink) Old 01-04-2013, 07:01 AM
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Everybody has different requirements but what I have found over the years is that if something takes a lot of time to set up it doesn't get used. I had a stacking set many years ago and found it to be a PIA. Nothing I did came out right unless I fiddled with it and added shims. I switched to a wobble one and can set it up in under 20 seconds. As far as the bottom smoothness everyone is right it isn't that smooth. BUT since I can't see the bottom it doesn't bother me. Actually the rough surface holds glue better. If you plan on doing a lot of box joints then a router set up is probably the way to go. The 3/4" "other stuff" is best done on a table saw but that is the stuff that you won't see the bottom of. As far as what the manufacture recommends I wouldn't pay any attention to it. Get a wobble blade from Sears and save yourself $100 dollars. Spend the extra that you saved on a box joint jig.if you don't like the blade take it back.
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post #10 of 63 (permalink) Old 01-04-2013, 07:05 AM Thread Starter
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Quote:
Originally Posted by MAFoElffen View Post
I presently have what, six 8" dado sets? (pro standard and finish grade) Ranging from $40 to $470... And another on it's way from Laguna. Embarrassingly, I seem to have acquired saw blades like Bob has routers. But it "has" been spread out over 40 years.

Don't buy a $40 dado set. You'll be frustrated and not satisfied with the quality... Especially if you're trying to do fine box joints or expecting a finish quality spline. They will need resharpening often.

Don't buy a $400 dado set, unless you are so inclined. The quality is surely there, but I've found that same quality for less money, in other sets.

Frued is great. Huge carbide teeth that can be resharpened again and again. Although they do seem to hold their edge for a long time. Over lapping tooth design that creates a very sooth spline..

The best bang for the buck I've found for a low-end finish dado:
Dado Set, 8" x 42 Tooth w- 6T chippers, Oshlun SDS-0842 - Carbide Processors
...But not a good match if you have an underpowered saw.
Thank you, Mike...looks like a good set...Freud videos show a real flat finish also...regarding power, I have a 10 inch, 15 amp saw (2+ hp ?)...look ok for the Oshlun...?
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