In rec.woodworking
"JackD" <[email protected]> wrote:
>A smaller blade will require less horsepower to cut with (cutting speed is
>slower) so it might be more appropriate for a saw with less power. I think
>that if you are cutting wide and deep dadoes with your saw, and your motor
>is 1 1/2 HP or less that you should consider the 6".
While this certainly makes sense from a physics point of view, my 1.5 HP
saw has no trouble spinning a 3/4" wide dado into oak with an 8" stackable
on it. Granted I'm not going deep, but something tells me it could if I
needed to.
Fly-by-Night CC <[email protected]> wrote in
news:[email protected]:
> In article <[email protected]>,
> "Tom Young" <[email protected]> wrote:
>
>>
>> My question is, what diameter dado blade should I purchase 6" or 8"
>> and why. My saw is a Delta contractor.
>
> Hi Tom. In addition to the depth and power answers, also consider rim
> speed. The 8" set will be travelling at about 82mph while the 6" size
> runs at about 62mph - at 3450rpm. That's akin to dialing down a router
> from 22,000rpm to 16,500rpm. Many (as in most) woods will produce a
> cleaner cut at the higher speed.
>
> I bought a Freud 8" 24 tooth/4 tooth chipper set (the SuperDado, I
> believe it's called), years ago back when I had a Jet 1.5hp
> contractors style saw and never ran into any problems with it bogging
> down on normal depth dados in hardwoods or half-laps in 2x materials.
>
> I don't know if the 6" would have performed just as well, but I've had
> no problems with the 8" set - and it's always nice to have that extra
> depth should the need ever arise - tho it hasn't arisen for me yet.
>
I've had exactly the same experience with my 8" super-dado set. However,
I have liked the extra reach the 8" offers when I use my crosscut sled.
I'm running mine on a 1.5 hp grizzly contractors saw.
Jim
On a healthy TS the 6" dado is fine, but if you run a wimpy TS the flywheel
effect of the 8" dado may be a benefit.
--
Rumpty
Radial Arm Saw Forum: http://forums.delphiforums.com/woodbutcher/start
- - - - - - - - - - - - - - - - - - - - -
"JackD" <[email protected]> wrote in message news:[email protected]...
>
> "Tom Young" <[email protected]> wrote in message
> news:[email protected]...
> > Hey folks:
> >
> > Forgive me if this post has already appeared but if so, I missed it or
> > possibly didn't post correctly. Will watch closer this time.
> >
> > My question is, what diameter dado blade should I purchase 6" or 8" and
> why.
> > My saw is a Delta contractor.
> >
> > All advise appreciated
> >
> > Tom
>
> A smaller blade will require less horsepower to cut with (cutting speed is
> slower) so it might be more appropriate for a saw with less power. I think
> that if you are cutting wide and deep dadoes with your saw, and your motor
> is 1 1/2 HP or less that you should consider the 6".
>
> -Jack
>
>
"Tom Young" <[email protected]> wrote in message
news:[email protected]...
> Hey folks:
>
> Forgive me if this post has already appeared but if so, I missed it or
> possibly didn't post correctly. Will watch closer this time.
>
> My question is, what diameter dado blade should I purchase 6" or 8" and
why.
> My saw is a Delta contractor.
>
> All advise appreciated
>
> Tom
A smaller blade will require less horsepower to cut with (cutting speed is
slower) so it might be more appropriate for a saw with less power. I think
that if you are cutting wide and deep dadoes with your saw, and your motor
is 1 1/2 HP or less that you should consider the 6".
-Jack
"Tom Young" <[email protected]> wrote in message
news:[email protected]...
> My question is, what diameter dado blade should I purchase 6" or 8" and
why.
> My saw is a Delta contractor.
I think you could be happy with either - perhaps let cost factor into your
decision. I ran a 6" in a benchtop and now run an 8" in my contractor saw.
The 8" can cut deeper, but it's a capability I've not needed yet.
In article <[email protected]>,
"Tom Young" <[email protected]> wrote:
>
> My question is, what diameter dado blade should I purchase 6" or 8" and why.
> My saw is a Delta contractor.
Hi Tom. In addition to the depth and power answers, also consider rim
speed. The 8" set will be travelling at about 82mph while the 6" size
runs at about 62mph - at 3450rpm. That's akin to dialing down a router
from 22,000rpm to 16,500rpm. Many (as in most) woods will produce a
cleaner cut at the higher speed.
I bought a Freud 8" 24 tooth/4 tooth chipper set (the SuperDado, I
believe it's called), years ago back when I had a Jet 1.5hp contractors
style saw and never ran into any problems with it bogging down on normal
depth dados in hardwoods or half-laps in 2x materials.
I don't know if the 6" would have performed just as well, but I've had
no problems with the 8" set - and it's always nice to have that extra
depth should the need ever arise - tho it hasn't arisen for me yet.
--
Owen Lowe and his Fly-by-Night Copper Company
Offering a shim for the Porter-Cable 557 type 2 fence design.
<http://www.flybynightcoppercompany.com>
<http://www.easystreet.com/~onlnlowe/index.html>
In article <[email protected]>,
Jim <[email protected]> wrote:
> I have liked the extra reach the 8" offers when I use my crosscut sled.
That's an excellent point.
--
Owen Lowe and his Fly-by-Night Copper Company
Offering a shim for the Porter-Cable 557 type 2 fence design.
<http://www.flybynightcoppercompany.com>
<http://www.easystreet.com/~onlnlowe/index.html>
You should buy the 12" then send it to me and I will send you my 6"
"Tom Young" <[email protected]> wrote in message
news:[email protected]...
> Hey folks:
>
> Forgive me if this post has already appeared but if so, I missed it or
> possibly didn't post correctly. Will watch closer this time.
>
> My question is, what diameter dado blade should I purchase 6" or 8" and
why.
> My saw is a Delta contractor.
>
> All advise appreciated
>
> Tom
>
>
"Rumpty" <[email protected]> wrote in message
news:[email protected]...
> On a healthy TS the 6" dado is fine, but if you run a wimpy TS the
flywheel
> effect of the 8" dado may be a benefit.
Perhaps for an inch or two and then ....