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Old 12-15-2011, 05:41 PM   #16
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wood cutting 4-1/2" grinder blades


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Yup...that's the little troublemaker right there. That thing in the hands of a novice is like giving a four year old a loaded gun. I keep mine at home hidden and when it is needed I am the only person that I will allow to use it.

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Old 12-15-2011, 05:45 PM   #17
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wood cutting 4-1/2" grinder blades


you can use this Bosch tool to cut the flooring http://www.boschtools.com/Products/T....aspx?catid=22

or this one from harber frieght http://www.harborfreight.com/3-3-8-e...saw-94626.html
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Old 12-15-2011, 05:47 PM   #18
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wood cutting 4-1/2" grinder blades


A saws all is a great tool but for this job with the blade jumping around it's going to bounce out and hit the wall or baseboard, tip of it's going to hit uncut wood and bend up and be useless.
I've proven this time and time agin. I have someone start on one side of the room with a saw all and I start with a Toe kick on the other side. I have two sides done and there still changing the bent up blade.
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Old 12-15-2011, 05:52 PM   #19
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wood cutting 4-1/2" grinder blades


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A saws all is a great tool but for this job with the blade jumping around it's going to bounce out and hit the wall or baseboard, tip of it's going to hit uncut wood and bend up and be useless.
I've proven this time and time agin. I have someone start on one side of the room with a saw all and I start with a Toe kick on the other side. I have two sides done and there still changing the bent up blade.
Not if you're experienced. You don't let the blade come out of the cut to start with. That's a why you angle the body real low do you're cutting back and forth, not up and down.
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Old 12-15-2011, 05:57 PM   #20
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wood cutting 4-1/2" grinder blades


With a Sawzall if you keep the foot snugly on the surface all of the jumping will mostly go away. Hold it tight and allow the saw to do the work. Don't use a longer blade than is necessary.
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Old 12-15-2011, 05:59 PM   #21
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wood cutting 4-1/2" grinder blades


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Originally Posted by joecaption View Post
A saws all is a great tool but for this job with the blade jumping around it's going to bounce out and hit the wall or baseboard, tip of it's going to hit uncut wood and bend up and be useless.
I've proven this time and time agin. I have someone start on one side of the room with a saw all and I start with a Toe kick on the other side. I have two sides done and there still changing the bent up blade.
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Originally Posted by Bud Cline View Post
With a Sawzall if you keep the foot snugly on the surface all of the jumping will mostly go away. Hold it tight and allow the saw to do the work. Don't use a longer blade than is necessary.
THANK YOU!!
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Old 12-15-2011, 07:15 PM   #22
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wood cutting 4-1/2" grinder blades


The bosch flush cut saw that Paul referenced above will do the job that the OP asked about. Very controllable, rigid blade, fine kerf. I use mine mainly for undercutting casing and jambs when installing new flooring. Very nice tool and reasonably priced at just over $100.
Mike Hawkins

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Old 12-15-2011, 07:39 PM   #23
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wood cutting 4-1/2" grinder blades


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i am curious why i never see 4-1/2" grinder blades for cutting wood in hard-to-reach places. people use things like Fein multitool but i think using a grinder with a proper blade, which seems unavailable in shops, would be better.

anyway, i am trying to cut some old flooring really close to the edge with a wall but i can't use sawzall cause there is a joist under. i would like to cut it alongside the joist to half the joist's width so there is half of the joist for support for the old floor on which the wall sits and also half on the other side for the new floor. if there was no wall, i could do it with a circular saw but the wall makes it impossible to reach.

why in the world do they not make wood cutting blades for 4-1/2" grinders?
Rotozip with the angle drive and wood blade.. made for the job. Max depth of cut 3/4"
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Old 12-15-2011, 07:49 PM   #24
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wood cutting 4-1/2" grinder blades


the correct answer to the ops question is that there is too much angular momentum to properly control an hand-held tool (whereas a circular saw can rest against the piece being cut for stability).

you can turn your grinder on and feel the gyroscopic effect, it is difficult to change directions quickly.

the do make a tool with 2 4.5 inch blades rotating in opposite directs (and essentially unshielded) to cancel out the angular momentum (there is a russian built helicopter with dual main rotors rotating in opposite directions, no tail roter is needed).

anyway, still a dangerous tool....a jamb saw is much safer and gets the job done.
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Old 12-16-2011, 10:21 AM   #25
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Harbor Freight Oscillating Tool = $30
Harbor Freight Oscillating Tool Blade = $5
Not cutting your digits off with a blade spinning at 8,000 rpm = priceless

I've found countless uses for mine. I've used it for tasks similar to the OP's, for trimming door jambs for new flooring, for plunge cuts in lumber to notch for plumbing, you name it.

Surprisingly, I've beaten up on it pretty good....and its still alive, which is unusual for HF.

And thanks for reminding me about that tool....I forgot that my dad really liked it and I've been struggling to come up with Christmas gift ideas for him.
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Old 12-16-2011, 10:34 AM   #26
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wood cutting 4-1/2" grinder blades


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I've found countless uses for mine. I've used it for tasks similar to the OP's, for trimming door jambs for new flooring, for plunge cuts in lumber to notch for plumbing, you name it.

Surprisingly, I've beaten up on it pretty good....and its still alive, which is unusual for HF.

And thanks for reminding me about that tool....I forgot that my dad really liked it and I've been struggling to come up with Christmas gift ideas for him.
I actually have the bosch version and love it. But I know that a lot of folks have used the HF model and say it works fine. The price point of the HF sounded better for my illustration.

The HF blades are a good deal, and can be modified to fit other oscillating tools.
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Old 12-16-2011, 01:17 PM   #27
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wood cutting 4-1/2" grinder blades


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Yup...that's the little troublemaker right there. That thing in the hands of a novice is like giving a four year old a loaded gun. I keep mine at home hidden and when it is needed I am the only person that I will allow to use it.
That gives me the cold chills. I think a person could really mess up big time with that saw, pro or not.
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Old 12-16-2011, 03:09 PM   #28
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wood cutting 4-1/2" grinder blades


I still don't think a recip tool, of any kind, is appropriate for this job. JMHO
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Old 12-16-2011, 06:35 PM   #29
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Get yourself a Harbor freight multi-tool---You will be so glad you own one--they are very handy for so many different jobs--Save the grinder for something else.----Mike----

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