Question 1

How does this compare to the Freud sd208? It's not too much more, but is it really a lot better?

Accepted Answer

Slight advantage to the Oshlun over the Freud 208, mainly due to having more teeth.  The Oshlun isn't quite as clean as the DW/Delta 7670 though, which tends to run a bit higher in price.  Any of those will have significantly better performance than the $30-$50 sets from Avanti, HF, Mibro, Vermont American, Promax, and others.  However, none of these entry level sets do as well as the premium sets from Infinity, Freud, Forrest, Systimatic, Ridge Carbide, etc @ $200+, mainly due to the design and quality of manufacture...there really is a notable difference, but the better ~ $90+ sets can be "good nuff". It all boils down to need, usage, economics, and priorities.

Question 2

I have a 10 inch Roybi portable saw.  Which set would be more approiate the 6 inch ? or the 8 inch?

Accepted Answer

Don't know if you are still thinking about this, but I have a Ryobi BT3100 and although in theory it could use 8" dado blades, it can't. I got some 8" off CL at an excellent price, but when I put them in, they rub against the body of the saw. There is a little bump out there for some reason. Thus the manufacturer says 6" blades. I could use it if I were to use only  a small cut, but what's the point. So check this out with your saw. Sometimes the manufacturer actually may know something.

Question 3

Can a Dado cut the tongue of a tongue and groove or would I need a router. Right now using several pass method on a table saw but impricise

Accepted Answer

It can, but there are more appropriate tools that can cut a tongue & groove with a lot less set up time. A dado will need spacers & shims which may need to be made to get the spacing you require for the tongue to be made in one pass.

Question 4

will this fit a dewalt 7491rs table saw with the insert that came with the saw?

Accepted Answer

I have a Dewalt 745 and it worked just like the supplied blade. My saw won't accept a regular stacked dado set but this set works great.

ASIN	B0012YF25Q
Best Sellers Rank	#109,945 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #275 in Circular Saw Blades
Brand Name	OSHLUN
Color	Steel
Compatible Devices	8-inch circular saws with 5/8-inch arbor
Compatible Material	Engineered Wood
Customer Reviews	4.6 4.6 out of 5 stars (1,601)
Global Trade Identification Number	00892592001110
Included Components	Stack Dado Set
Item Dimensions L x W	8"L x 8"W
Item Thickness	0.25 inches
Item Type Name	Dado Set
Item Weight	9.9 pounds
Manufacturer	Oshlun
Material Type	Carbide
Model	SDS-0842
Number of Items	1
Number of Packs	1
Number of Teeth	42
Part Number	SDS-0842
Set Name	Oshlun SDS-0842 8-Inch 42 Tooth Stack Dado Set
Style Name	Stack Dado Set
UPC	745332116455 747153771547 892592001110 733353635017 784497275256 732454851500 737946523163
Unit Count	1 Count
Warranty Description	Oshlun guarantees all of our products against defects in material and workmanship for the life of the product. This does not include normal wear and tear or improper usage.

Oshlun SDS-0842 8-Inch 42 Tooth Stack Dado Set with 5/8-Inch Arbor

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