[TheForge] O T grainte bolder

[Bruce Freeman]

Any chance the boulder has any natural cracks already?

One way of splitting boulders is to use feathers and wedges.  Tom
Tucker illustrates these in his  book.  The "feather"s are very thin
steel wedges that can be slipped in pairs into existing cracks.  The
"wedge" is a wedge stout enough to hammer on, that is slipped between
the feathers before hammering it home.  The feathers curl outward at
the top so as to make a path for the wedge.  You'd use a series of
these along a crack to expand the crack and split the boulder.

On Wed, Nov 4, 2009 at 3:29 PM, Dan Scheid <damales at pollybutte.net> wrote:
> We are a divers group  I have a boulder in my drive to big for the backhoe
> so I was going to drill it and put in that expanding compound they sell to
> break up boulder. . I just went at it with a jack hammer and star drill and
> am having a hell of a time getting a hole . anyone have tricks or ways to
> drill granite?
> Dan Scheid
>
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-- 
Bruce
NJ