kango
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| posted on 16/6/08 at 08:27 AM |
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Speed - Hole saw
What speed should I set my drill to when using a 25mm hole saw?
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bilbo
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| posted on 16/6/08 at 08:30 AM |
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This may be of use:
http://www.aonx97.dsl.pipex.com/WS-page/table-page/tables.htm#Drilling
Edited to say DOH! - should read your post better. Talking about hole saws, not drills.
Here:
http://www.fairburyfastener.com/holesaw_speed_chart.htm
[Edited on 16/6/08 by bilbo]
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Peteff
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| posted on 16/6/08 at 08:56 AM |
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Another good tip someone (Andy donut I think) put up a while back was to swap the drill for a piece of solid bar same diameter once your centre hole
is through. It gives much better more solid location.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Mr Whippy
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| posted on 16/6/08 at 09:05 AM |
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quote:
Originally posted by Peteff
Another good tip someone (Andy donut I think) put up a while back was to swap the drill for a piece of solid bar same diameter once your centre hole
is through. It gives much better more solid location.
as above, makes a world of difference, especially drilling grp. Though just use a normal drill on its own to make the guide hole rather than change
the cutter over.
Fame is when your old car is plastered all over the internet
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BenB
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| posted on 16/6/08 at 10:34 AM |
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Yup. Much easier to replace the drill bit in the hole saw with a bit of rod then just drill a normal hole with a bit of the same size and swap the bit
to the hole cutter.
For GRP you can go pretty damn quick with a hole saw  If it starts smoking slow down a bit before you do the full Ray Mears impression.....
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kango
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| posted on 16/6/08 at 11:19 AM |
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Thanks, I an making "A" arms.
What is the best way to index the pipe at the same plane - if I have drilled though the one side and set it up to drill the orher side that the 2
holes are going to be at the same angle. A bit difficult to explain, but if you made them before you will know what I mean.
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Fred W B
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| posted on 16/6/08 at 01:11 PM |
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Hi Kango
Lay the pipe in a piece of angle and use the edge of the angle to draw a straight line down the pipe with a marker
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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liam.mccaffrey
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| posted on 16/6/08 at 02:39 PM |
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i have set my lathe up to do exactly this sort of thing,
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kango
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| posted on 16/6/08 at 04:59 PM |
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Like your new Avatar Fred W B
The 90 deg cut went ok at 350 rps. The 38 Deg cut destroyed my brand new hole saw. So it is back to gring and fitting. Unfortunately no lathe.
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