From:
"Walter S. Arnold" <walter@zzzzzzzzzzzzzzz>
Date:
Fri, 21 Oct 2005 15:41:47 -0500
Subject:
grinder wheels
At 03:01 PM 10/21/2005, John Vancamp wrote:
Quoted text begins.John, I believe the evidence of drill marks you refer to are from carving
with a pointing machine. I've never worked with one, nor worked from any
sort of model, but I have seen pictures of a carver and assistant using a
hand powered drill called a violin.
End of quote.
The violina and the pointing machine are two very different things.
The "drill" used with the pointing machine is just a very fine
chisel, about a 1/16" wide blade, spun between the palms to a depth
of just a few paper thicknesses to hold the pencil mark.
The violina is a great tool, very rarely used now. It isn't used in
combination with the pointing machine, it's used for other things.
Most of what it can do has been replaced by mini die grinders with
diamond tips for marble or carbide tips for limestone, but there are
certain effects that nothing but a violina can achieve. That is due
to the way it cut through the marble leaving a fresh, clean surface,
a texture that is unique to that tool. It could also be used with
splayed chisel bits to go into a very narrow space and undercut- hard
to explain, I'd have to show you. You could go between tight folds of
drapery and open it up inside the fold. It's normally a two person
operation, but it can be used by a single carver.
Drilling has lots of applications. I'll sometimes drill around the
edge of a leaf with an 1/8th or 1/16" drill bit, creating a series of
small holes. I leave the webbing between the holes to give strength
to the undercut edge of the leaf, but from more than a few feet away
the shadow becomes continuous. Drills can also be used (carefully) to
establish depths or to define the location and depth of corners when
sinking a panel. Another application is with plugs and feathers.
John Van Camp wrote:
Quoted text begins.Well, I've never built a cathedral so if
Walter Arnold says chisels are
the way to go
End of quote.
Don't misunderstand- I didn't say they are the only way to go, just
the way I go. I don't use grinding wheels; that's personal taste, I
happen to dislike grinding and I find chisels (sometimes combined
with sawing at the early rough out stage) to be the fast, efficient
and accurate method.
Walter S. Arnold * walter@---------------
Gallery: http://www.stonecarver.com
Gargoyle postcards: http://www.stonecarver.com/postcard.html
- References
- message 00131: grinder wheels - John Vancamp (21 Oct 2005)
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