On 13/06/2011 09:10, Alexei Pace wrote:
Good morning,
the only time I need to drill holes at an angle was through wood.
That can be done with a common drill press (ie still having the drill
point vertically downwards), however you angle upwards the material to
drill into at the appropriate angle. Also it has to be secured
properly otherwise the drill bit tends to 'slip' especially at very
shallow angles.
Best regards
Alex
Hi Alex,
Drilling holes into sloped surfaces is problematic with
conventional metalworking drills because the point will want to move
down the slope before cutting begins with the drill bending in extreme
cases. If I had a similar job to do I would use an 'End Mill' which has
a flat cutting face with no tendency to drift on slopes.
See an example at:
http://www.google.co.uk/products/catalog?q=end+mill&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&channel=np&um=1&ie=UTF-8&tbm=shop&cid=15536978382111228765&sa=X&ei=Ju71TZfTOo2GhQeCueTNBg&ved=0CHMQ8gIwAg
This is really a cutter for a vertical milling machine but it can be
used in a drill press for matrials like wood if you feed the tool in
very slowly. In combination with conventional metalworking drills an
end mill could be used to 'spot face' a flat on the slope before
continuing with a conventional drill.
Hope this helps.
Tony Moss
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