wattizzit blade

Frank Fusco

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Mountain Home, Arkansas
I have had this kicking around in the 'stuff' I inherited.
Haven't a clue what it might be good for. Some kinda blade, no doubt.
It is 3 1/2" diameter with a 5/8" arbor. Lotsa nasty looking alternating teeth.
 

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Frank,
If I recall correctly, it's one of those 'good ideas that didn't work' Wonder tools that was briefly marketed maybe twenty years ago.

It was intended for use in a circular saw, for cutting curves.

A neighbor back then had one - or at least one similar to it - and was going to make a curved front bar for his patio. As I recall, the kerf was about 3/8" wide, and VERY rough. Also, about halfway through, Lou lost control to the saw and it went skittering across the veneer face of the plywood he was cutting. I never saw that blade again...
 
Frank,
If I recall correctly, it's one of those 'good ideas that didn't work' Wonder tools that was briefly marketed maybe twenty years ago.

It was intended for use in a circular saw, for cutting curves.

A neighbor back then had one - or at least one similar to it - and was going to make a curved front bar for his patio. As I recall, the kerf was about 3/8" wide, and VERY rough. Also, about halfway through, Lou lost control to the saw and it went skittering across the veneer face of the plywood he was cutting. I never saw that blade again...

This one is 5/16" thick. Sounds like a possibility.
 
Frank, I would be inclined to agree with Dan, that it is a "fixed width dado". :D

I think the fact that it is as thick as it is at the arbor hole, I would doubt that it would fit a circular (Skilsaw) saw. :eek:

JMNSHO :rofl:

You have a table saw. Give it a whirl and see how it works for dadoing. It's sharp, no? :dunno:

Aloha, Tony :wave:
 
We used blades similar to that in a hand held air driven saw to cut the roots out of aluminum weld joints back when I made things that went boom. One poor fool tried using it in a t-shirt and ended up with a bunch of aluminum shavings seared to his skin. I would hang it on the wall or bury it in the garden myself.
 
It contains all the componants of a Dado blade: Left side knife cut, Center rakers, right side knife cut... diameter is small due to less needed for shallow depth dados, 5/8" arbor indicates for use on smaller saws, so the smaller diameter would prevent overloading the saw motor with deep cuts, Most likely manufactured for industry use where a fixed size Dado is in constant use for repetive cuts.

I see no reason to fill your garden with iron deposits as it may be just the ticket when you need a 5/16" dado and a quick set-up. Hang it on the wall and remember it for you next need. Or offer it on E-bay
 
Yesterday I was doing my apprenticeship with a local bloke who specialises in Japanese joinery.

We're making a tool cabinet as part of a shop clean up process and need to do a rebate on the rear of the carcase for the plywood back. I asked "sensai" if the plan was to use a router when he goes to a cabinet and pulls out a Hitachi circular saw from Japan.

It's a rebating saw and basically uses a mini dado blade just like the photo shown. Sensai's comments on it was "It's very useful but you absolutely have to run it with a fence or it's a wild animal"
 
Frank, I had a blade like that in all of the stuff that I inherited from my grandfather. That blade was in with his radial arm saw equipment, and I always assumed it was a dado blade specifically for use on the the RAS.:dunno:
 
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