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Forum topic by 2bigfeet posted 01-02-2013 03:01 PM 1142 views 0 times favorited 7 replies Add to Favorites Watch
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2bigfeet

65 posts in 2145 days


01-02-2013 03:01 PM

I need to make a bunch of 1” thru mortises in 5”x5” hard maple. I’m looking at purchasing either the Powermatic 719T or the Shop Fox W1743 (Grizzly GO448).

Its a little confusing trying to decipher the specs of these as far as stroke/clearance etc goes. Will a 5”x5” fit under a 1” chisel setup? I would imagine I would have to flip the workpiece to get a thru cut…?

Otherwise, are these machines capable executing 1” thru mortises in hard maple?

Thanks for any input.


7 replies so far

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AandCstyle

2575 posts in 1723 days


#1 posted 01-02-2013 04:41 PM

The web sites indicate chisel stroke of 10.75” for the PM and 9” for the Griz. Motors are listed as 1 and 1.5HP respectively FWIW. My bigger concern would be the quality of the hold down mechanism. Either way, buy the best chisels you can find. Fisch and Lie Nielson come to mind, but I don’t see that either company makes a 1” chisel. I suppose you could use a 0.5” chisel and make 4 cuts for each mortise. Finally, sharpen the chisel to the best of your ability and polish the four faces to a mirror finish. HTH

-- Art

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2bigfeet

65 posts in 2145 days


#2 posted 01-02-2013 04:52 PM

Thanks Art.

Forgot to ask about the pros & cons of a tilting table vs a tilting head?

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Loren

8313 posts in 3114 days


#3 posted 01-02-2013 04:56 PM

The Powermatic can do it. There’s a lot of capacity under
the head.

You can buy 1” mortising chisels from Woodworker’s Supply.

My Powermatic 719 doesn’t tilt. It’s a robust machine.

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AandCstyle

2575 posts in 1723 days


#4 posted 01-02-2013 05:03 PM

A tilting head would be great if you make furniture that requires angled mortises, e.g. chairs. I used my buddy’s PM and thought it was a great machine, but it was an older one and I don’t know anything about the newer ones.

-- Art

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Loren

8313 posts in 3114 days


#5 posted 01-02-2013 05:20 PM

I suppose the tilting feature can be used to make
mortises angled at both ends for wedged mortise
applications. Few furniture designs require mortises
angled in the long orientation of a board. Most
angled mortises used in chair making are just a
few degrees and in the other axis not served
by tilting mortisers.

Sharply angled mortises are used in timber framing.
Furniture applications are limited.

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2bigfeet

65 posts in 2145 days


#6 posted 01-02-2013 06:05 PM

Just ordered the Powermatic. Couldn’t find any reviews on the others. I did read somewhere that the tilting head requires you to secure the machine to the floor where as the tilting table doesn’t. That “tipped” me towards the PM. :-)

Thanks for your help. Was really more concerned with capacity.

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AandCstyle

2575 posts in 1723 days


#7 posted 01-03-2013 01:59 AM

Good luck with the new tool. Let us know how it works for you. I wish that I could justify one. :)

-- Art

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