[TheForge] OT: Spring tile question

[Jerry Frost]

That's a rotary drill and useful in good conditions as it doesn't have 
enough torque to move cobles out of the way or carry large quantities of 
sand and gravel up the auger. If you're "free holing" in clay all you need 
is a tricone, bi cone or button bit and a water supply. The bit rubs the 
clay while water washes it up the hole and out. If you're in rock you need a 
tricone and down pressure, in rock a button bit needs either down pressure 
or a hammer drill.

Jer (yeah, retired driller)
----- Original Message ----- 
From: "Dan Brewer" <danqualman at gmail.com>
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Monday, April 02, 2012 10:13 AM
Subject: Re: [TheForge] OT: Spring tile question


> What you are looking for is this company
> http://www.deeprock.com/HD/Default.aspx .
>
> Dan in Auburn
>