Circular Saw Specifically Designed for Cutting Cement Board

[MountainDon]

Has anyone ever used one, or seen one in use? Priceyish but if it works it could be very nice to have when working with cement board products.



http://www.tylertool.com/mak50714cirs2.html?utm_medium=shoppingengine&utm_source=nextag

http://www.amazon.com/Makita-5057KB-4-Inch-Circular-Collector/dp/B00004YODW

http://www.makitafactoryoutlet.com/Makita/Products/5057KB.asp

In addition has anyone experience in using shear like the Kett, when working with cement board?



http://www.kett-tool.com/product.php?cat_name=fiber%20cement%20shears

[PEG688]

Are you talking about for siding or you sub floor?

The shears work OK not great for finish cuts but hey it is cement and if it's siding it gets caulked.

I've used them but don't really like them , I use a model 77 , with a cheap carbide blade generally you can get one house out of one blade. Cut outside and let the wind help with the dust, so set-up is important.

That other saw hooks to a vac , and it will be a PITA to drag the hose and the vac around.

For the under tile  sub floor or in the shower stall are for behind tile  we use a angle grinder to cut the cement board , same gig,  outside if possible, set -up so the breeze takes care of the dust. 

Remember it's just backer board.

[MountainDon]

Are you talking about for siding or you sub floor?

Siding. 

I've been planning of using an old Sears 7 1/4 circular saw... nothing wrong with it, but I don't like the thought of using either the P-C or Skil saws on something abrasive like cement. Using a proper cement board blade. I have one , lightly used from the shed.

I was lucky then with the winds.      Hope to continue that.   And I also have a respirator mask, which I don't like wearing, but probably will. I think a face shield (riot gear?) might be helpful if trying to follow a line if ripping a plank.

Interesting saw though. If I was made of money I'd have one. I read a user review that stated it seemed to get about 70% of the dust gathered... slightly more with the vac, but you needed a second person to "run" the vac hose.

[PEG688]

That Sears may lack the power you need , we hammer those Mag 77's, we have a old one , pre mag body that we 'try' to use just for Hardi. They make a strong saw. Maybe find one of those a hock shop?   

[MountainDon]

In that case I'll fall back on an old Makita; the only thing I don't like about it is the guard always binds and sticks up. It takes forever for the blade to slow and stop making it hard to set down.  I've used it for cutting cement patio blocks.

I have one of the mag 77's and yes it would do the job but I find it difficult to think about cutting cement board with it.   

[PEG688]

Have you ever blown out and lubed that saw guard?  Some dry Teflon spray might solve that issue. I do mine about 4 times a year , OR when ever I notice , or get sick of it , hanging up.

  I rarely , RARELY prop my guard back and IF I do I use my carpenters pencil , it works well as a prop , AND  by using it instead of a stick of shingle you WILL aways , OR should , pull it as you'll need the pencil again before you can cut again.

It's a tool Mtn D, made to use.   

[MountainDon]

I'll try some dry spray lube... I've blown it out but there seems to be a whole lot of sandy grit from cutting concrete patio blocks that makes it hang, won't come out. Moving it by handy i very gritty feeling. I probably need to dismantle it, but never get the energy to do so.

Handy tip about the pencil.   

[PEG688]

#1: I'll try some dry spray lube... I've blown it out but there seems to be a whole lot of sandy grit from cutting concrete patio blocks that makes it hang, won't come out. Moving it by handy i very gritty feeling. I probably need to dismantle it, but never get the energy to do so.

#2: Handy tip about the pencil.   

#1: Blow it out and use WD 40 at the same time , that will help clean it out. Then just blow out the WD and replace it with dry Tef. Or dis assemble it , I'd try the WD first it really does a good job cleaning out the crap.

#2:  Even a blind rat get the cheese once in awhile. Or is that a blind squirrel gets the nut??   

 

[glenn kangiser]

PEG knows all the tricks.

[PEG688]

PEG knows all the tricks.

No one person knows ALL the tricks all of us are smarter than one of us eh Or somethin like that.   

[glenn kangiser]

...or some of us are smarter than none of us or something like that...hmm

gotta check John's sig.