[DeTomaso] [NPC] Selecting air drills

[Chris Difani]

Mark:

You need a Milwaukee half inch VSR hammer drill. This will run in the neighborhood of $200 or so. This will also be the finest corded portable power tool you'll ever have. The Milwaukee brand is outstanding. Also if you're anywhere in the SF/Sacramento area, I'd be glad to loan you mine. 

If  you are the true "toolaholic", then you won't be happy until you have your very own hammer drill. www.toolking.com in Colorado is an excellent vendor, and here is their link for this drill:
http://www.toolking.com/milwaukee_5378-21.aspx   This tool is $140, MSRP of $201. 

One thing, there's single range, and dual range hammer drills. If you have, or anticipate, a "serious" amount of concrete drilling, then go for the dual range. It's a must. Also get the keyed chucks. It's not nearly as convenient as a keyless chuck, but the intense vibration that a hammer drill generates will unlock a keyless chuck in seconds... especially when you hit a "hard spot" in the concrete. And nothing slows the job down like a drill bit that isn't spinning.... not that I'd know about that.... 

Chris

Chris Difani
'73 L #5829 "LITNNG"
The Electric Pantera
Sacramento, CA
Email: cdifani at pacbell.net 


--------------------------------------------------------------------------------

----- Original Message ----- 
From: "Mark McWhinney" <msm at portata.com>
To: <detomaso at realbig.com>
Sent: Monday, January 14, 2008 3:48 PM
Subject: [DeTomaso] [NPC] Selecting air drills


>I am trying to drill some holes into concrete slab (garage floor) for some
> anchor bolts.  My battery powered drill which has served me well for years
> is not up to the job.  It gets part way then jams up.
> 
> This is a good excuse to go get an air drill.  The question is what to get.
> The 1/2", pistol grip drills are all rated about 4 or 5 CFM air consumption
> but have free speeds of 500 to 2,500 RPM.  I assume that they are the same
> under the covers but have different gearing for the different top-end
> speeds.  Since I need more torque than speed, should I go for the low-speed
> drills?  (Most manufactures specify their free speeds but not their torque,
> hence the question.)
> 
> 
> 
> 
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