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Tool Talk Discussion Forum

Cordless saws?

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tom-ky

09-10-2005 18:56:17




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Wanting to build a shed/pole barn but it is about 350 feet away from power. Are the cordless saws good enough to use for cutting the 2x4 and 2x6 lumber? Is is that working them too hard? Thought about a cheap generator but now they are hard to locate. Seems way too far to run cords. Any suggestions?




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Dug

09-11-2005 19:01:47




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Hi Tom,

I recently bought the Rigid 18v circular, reciprocating and drill (came with two batteries and a double charger). The saws work great. They will zip thorugh a 2x4 or 2x6 with no problem. With normal use, the batteries should last through the morning with a noon charge and then through the afternoon. You could purchase an extra battery or two and have plenty of power on hand.

Dug



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Stan in Oly, WA

09-12-2005 18:06:05




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 Re: Cordless saws? in reply to Dug, 09-11-2005 19:01:47  
Hi, Tom

I was going to suggest using 10 gauge wire until I looked up the wire gauge to distance chart for a 2% max voltage drop. For a 10 amp load, #6 wire will take you 285', #4 will get you 455'.
I don't know what constitutes an acceptable amount of drop for a 10 amp saw; maybe it will tolerate a lot more. I would want to know, though, before taking a chance of burning up a saw trying to save some money on wire size or cordless tools.

All the best, Stan

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Hawaiirocky

09-11-2005 15:39:10




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
I use both sawzall 18V cordless and circular 18V cordless. The circular saw would disappoint you, I think.



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Bill in NorthCentral PA

09-11-2005 12:26:22




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Of the comments read, I like the planning comment the best. Rather than 7.5' on center, figure everything to 8' oc, with your end bays at 8' to the outside (or 7'- 7.25" centers at your end bay.

As far a steel goes, if you are purchasing new, order it cut to the exact lenght needs - many companies only charge for what you get, although some round up to the next full foot. If you plan it out, this can be all preordered with the building designed and built to plans.


Any questions, email.

Good luck,

Bill

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John A.

09-11-2005 06:27:32




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Tom, Go get 2 rolls of 12-3 romex. And make you an extension from a good electrical source. you will need a bunch of it when you wire the barn for electricity anyway.
Later,
John A.



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jhill

09-11-2005 08:27:52




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 Re: Cordless saws? in reply to John A., 09-11-2005 06:27:32  
We used to run good heavy 12 ga extension cords 250 ft or more and you could tell the difference in the way the saw ran. Cordless saw will run down quickly cutting 2x4s. If you can't buy or borrow a generator rent one youll be happy you did.



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tom-ky

09-11-2005 06:50:51




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 Re: Cordless saws? in reply to John A., 09-11-2005 06:27:32  
Thought about that but was told the voltage drop would be too much and burn up the saw.



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dr.sportster

09-11-2005 07:21:47




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 Re: Cordless saws? in reply to tom-ky, 09-11-2005 06:50:51  
Im not too good with the computer but remember someone on tool talk directed me to a site that calculates voltage drops.Or VD=2KIL.I would say from past calculations that 10 awg wire for a distance of 350 feet would not be a problem for temp power.Voltage drop[real generally speaking]should not drop past 5% untill over 400 feet.That statement does not substitute for working the formula just rembering some circuits run in a very long parking garage.How many amps does the saw draw?

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tom-ky

09-11-2005 07:39:29




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 Re: Cordless saws? in reply to dr.sportster, 09-11-2005 07:21:47  
Here is a site someone told me about.
Link

Most saws pull 10 or more amps.10 amps at that distance is over 6% drop which they are saying is unacceptable. Hate to burn up a saw.



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dr.sportster

09-11-2005 08:19:07




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 Re: Cordless saws? in reply to tom-ky, 09-11-2005 07:39:29  
But the next largest size wire will cure that.Plug 10 gauge into the fotrmula and Ill bet your ok on the voltage drop.



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J.C. IN AZ.

09-11-2005 08:18:18




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 Re: Cordless saws? in reply to tom-ky, 09-11-2005 07:39:29  
If you plan your Barn/Shed carefully you can keep you saw cuts to a minimum. 7 1/2' Pole spacing and 16' Lumber using a Plan such as 60'x120' will all need very little use of a Saw. 4/12 roof pitch will use Strandard lgth Metal as will even 2 foot side Wall metal. Of course odd ball dimensions or using recycled material will throw this plan to the Wind. I have built many "Pole" type Bldgs useing #10-3 UF Cable over 400' and had no problems. A quality Saw will take a lot of abuse. A Marginal Saw will surprise you also. My2cts.

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Galen

09-11-2005 05:41:11




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
I've had to use a saw out in the pasture a couple of times - juat ran cords out - worked great (and it was at least 500'). Use heavy guage cords.
I do have DeWalt 14.4v and 18v cordless, and like the 14.4v WAY better - charges faster, holds longer, batteries are cheaper, lighter.



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Sand Flat Bob

09-11-2005 05:14:12




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Are you going to run an electrical service to the pole building after it is complete? If so, why not run it now to a temporary electric service pole? Much better than running a generator or trying to use battery powered equip.

Good Luck,

Bob



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Arizona Bob

09-10-2005 20:32:49




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Sometime back I was asking about running a cordless drill off a car battery and a fellow responded that he had a cordless saw rigged to run off a car battery. Said it worked very well. I subsequently fabricated a plug for the drill and run it off a lawn mower battery when I"m working on the horse pens or the compost bins.

Bob



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DL

09-10-2005 20:26:39




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Hey Tom,
I'm currently building a pole barn... generator died... using Porter Cable 19.2v circular saw & drill (I got two batteries with each... total of 4 batteries)... the tools can work longer than I can! Have fun!
Regards, DL
(PS... had a DeWalt saw... didn't have much luck)



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BobOHIO

09-10-2005 20:12:55




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 Re: Cordless saws? in reply to tom-ky, 09-10-2005 18:56:17  
Hi Tom, My friend has the DeWalt battery circular saw and said it has plenty of power and is nice and lite to operate. I would wonder on a big job like yours how long a battery would last. I would have a couple on hand if you decide to go this route.



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Jim Broughton

09-10-2005 21:14:31




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 Re: Cordless saws? in reply to BobOHIO, 09-10-2005 20:12:55  
Tom; If you get a DeWalt, watch out for weak batteries...I have one, good tool, but one of the batteries "took a hike" after only a few times use and will not recharge..the other one thus far has held up fine..but the batteries cost about $45.00 each !! Good luck, and could you use a small chainsaw for your cutting? Jim



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Slowpoke

09-11-2005 00:38:40




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 Re: Cordless saws? in reply to Jim Broughton, 09-10-2005 21:14:31  
I wouldn't be surprised if there was/is a gas engine circular saw somewhere. Maybe ebay.



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Slowpoke

09-11-2005 00:49:37




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 Re: Cordless saws? in reply to Slowpoke, 09-11-2005 00:38:40  
Well boys, looky here...a gas engine circular saw on ebay. Item # 5997739080, 7-1/4", brand new.



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Vern-MI

09-11-2005 08:17:58




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 Re: Cordless saws? in reply to Slowpoke, 09-11-2005 00:49:37  
Or this one for your sawing enjoyment...



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