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Tool Talk Discussion Forum

Need to cut plywood 90 deg to floor

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Dave

03-08-2004 18:38:55




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I added on to the end of the house.I removed the vinyl siding just where the new stuff met.Now that everything is weathertight,I'm pulling off everything else,and cutting in for access.Now my question-what can I use to cut the existing end wall sheathing (1/2" ply) tight to the new floor? (a 90 degree cut,right at the floor).All I want to do is cut thru the plywood,no deeper.I used a circular saw for the sides and along the new roofline (along trusses),but can't think of an easy way to cut along the floor.Basically,I need something with the blade parallel to,and right on the floor.I'm thinking either a cutoff wheel or 4" grinder,although someone told me to rent a jamb saw,if possible.Help! Dave

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pdruff

03-09-2004 08:13:12




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
I have a biquit jointer that you can adjust to do the cut you need to do. It will cut nearly flush with the wall or floor, also depth of cut is adjustable, carbide tipped blade should handle nails. I used it in a old house to cut the ceiling flush to a wall and was close enough to lay the plywood right on top. The whole thing is a angle grinderwith a wood blade.
paul



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Vern-MI

03-09-2004 07:49:13




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
Toe kick saw held verticle instead of horizontal.



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Bob

03-09-2004 08:05:31




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 Re: Re: Need to cut plywood 90 deg to floor in reply to Vern-MI, 03-09-2004 07:49:13  
Actually, a jamb or flush cut saw, also known as a door frame saw, would be ideal. I've always wanted one of these for some of the little HONEY-DO projects I've done over the years!

Perhaps a large tool rental place would have one?



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Vern_MI

03-09-2004 13:44:50




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 Re: Re: Re: Need to cut plywood 90 deg to floor in reply to Bob, 03-09-2004 08:05:31  
That's a neat flush cut saw. I didn't see that one. Looks like Dave has the justification.



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Vern-MI

03-09-2004 07:42:13




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
Use a small blade on a 4.5" grinder and cut through it right at the floor level. The hub holding the blade is only about 1/8" thick so the angle should be minimal. Count your fingers before and after.



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Dave H (MI)

03-09-2004 06:59:07




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
I take it you are not a rough-in guy and have never been around when a house is roughed? It doesn't need to be that fussy. there are quite a few things that are going to cover it. Do your best and fill/patch/etc. Plumb and square are more important.



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Mike D.

03-09-2004 06:04:33




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
Holy Cow man, it ain't that tough. Use a chisel if you are afraid of going too deep. Is it a harpsachord your building?



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RZ(Wa)

03-08-2004 23:09:56




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
1.Dremel Tool with the little circular saw blade.
2.Roto-Zip with a straight shank carbide cutter.
3.Cross cut hand saw (lay out a straight line across the sheet, cut parallel to the plywood surface).
4. Peanut grinder with one of those 'chain saw ' blades.
5. Ain't no easy and/or fast way.
6. Rent the jamb saw!
7. Don't worry about it, whack it off, chip out the remainder and patch with Fix-All and cover with drywall.

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Hayman

03-08-2004 19:41:26




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
Too late now so you are going to do it the hard way eh? Hold sawzall on an angle and the blade catches if you are one iota out too far.Use a chain saw at your own peril.kickbacks,smoke in the house,nails,and if you're no good on these you will go too deep and cut thru those precious wires etc anyway.By the way ,chainsaw is what I would use after inch by inch inspection of proposed saw cut to try and avoid nails.Wood chisel works but is slow. Also,you can try cutting as low as possible with skilsaw and then break the remaining 2 or 3 inches off with a sledge.It's all hidden anyway,right?

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JMS/MN

03-08-2004 18:42:21




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 Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 18:38:55  
Sawzall with long bimetal wood with nails blade.



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ray

03-09-2004 08:52:39




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 Re: Re: Need to cut plywood 90 deg to floor in reply to JMS/MN, 03-08-2004 18:42:21  
If I understand what your'e trying to do a router works well -- having hit subfloor copper plumbing once its worth the extra effort.



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ray

03-09-2004 12:20:51




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 Re: Re: Re: Need to cut plywood 90 deg to floor in reply to ray, 03-09-2004 08:52:39  
Ok. I found the post start don't use a router. Saw a video where a fella used a shot gun to start a hole in the ceiling for new vent/or was it a chimmney.



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Dave

03-08-2004 19:11:17




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 Re: Re: Need to cut plywood 90 deg to floor in reply to JMS/MN, 03-08-2004 18:42:21  
I don't want to go deeper than 1/2" or so (framing,insulation,wiring,etc is in there),and I want to cut it flush with the floor.How can I cut flush with a sawzall? Dave



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RZ(Wa)

03-08-2004 23:16:45




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 Re: Re: Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 19:11:17  
By starting at and keeping a very shallow angle while cutting (keep the foot firmly on the plywood). Never go into the cut once you've got it going, draw the blade along the cut and closely watch watch where both the blade tip is hitting and the cut line. Rev up the sawzall and go fer it..



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jls

03-08-2004 19:31:15




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 Re: Re: Re: Need to cut plywood 90 deg to floor in reply to Dave, 03-08-2004 19:11:17  
this isn't brain surgery. get as close as you can with the circle saw, then get a big chisel and rip it up. It only has to cover! there's a reason we charge more if the customer watches! it busts, splinters, gouges,--- topping fills it right in and flooring goes over it.



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Dave

03-09-2004 16:07:47




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 Re: Re: Re: Re: Need to cut plywood 90 deg to floo in reply to jls, 03-08-2004 19:31:15  
That's what I wound up doing.Cut it close as I could with circ saw (1"and change).Was much harder pulling old sheathing off (#$%$# trigger-happy,staple-gun toting Amish).Had to get it off quick so a buddy could get in to do electrical.I'll straighten it up later (friend of friend has jamb saw).Thanks to all.PS-How'd you know I got a harpsicord????



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