They also make these adjustable jigs for drilling angle
holes: (it won't give you compound angles though)
http://www.grizzly.com/products/Drill-Guide/H3487
If you are drilling wood or plastic, this spade bit might
also work as the sharp point will help in starting your hole
precisely if your angle is not too steep.
brent
http://www.professional-power-tool-guide.com/wp-content/uploads/2008/08/drill-bits-spade.jpg
On 6/13/2011 4:11 AM, Tony Moss wrote:
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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