dogwood
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| posted on 17/5/08 at 07:51 AM |
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How to cut a 40mm hole
How do you cut a 40 mm hole in the front lower bones?
Answer..Very carefully
http://i129.photobucket.com/albums/p212/muddypaws4x4/locost107.jpg
Took me all day to make the plates
and god knows how many cutting discs.
finaly got them done
http://i129.photobucket.com/albums/p212/muddypaws4x4/locost111.jpg
Only last night to find out I could have bought them for about £8 from 3GE
bu***r 
David
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jabs
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| posted on 17/5/08 at 08:17 AM |
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Ah but the pleasure of knowing you made them rather than just buying them
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big_wasa
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| posted on 17/5/08 at 08:38 AM |
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I chain drilled mine and filed them by hand 
 
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fatfranky
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| posted on 17/5/08 at 08:53 AM |
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For what it's worth I have a copy of the Boxford manual and it recommends drilling large items (that are too long to fit in your chuck) the
other way round. i.e. with the drill bit or cutter in the chuck and they supplied a fixture that fitted into the tailstock that you could clamp the
work to, but i dare say that you could make up a suitable fixture if required
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chris_smith
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| posted on 17/5/08 at 11:41 AM |
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laser cut them 
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James
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| posted on 17/5/08 at 04:18 PM |
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chain drill.... easy.
Wait a minute, holy crap, how thick is that metal plate? 10mm? Only needs to be 3-5mm!
Or is it an optical illusion?
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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liam.mccaffrey
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| posted on 17/5/08 at 08:08 PM |
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I reckon they're tack welded together
Build Blog
Build Photo Album
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big_wasa
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| posted on 17/5/08 at 09:22 PM |
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^^^^
Yep thats how I did mine. Two bits of 5mm plate tacked together as one .
Hard work but a matching pair
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dogwood
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| posted on 18/5/08 at 03:41 PM |
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Yup spot on, tack welded together.
Mind you should have seen the lathe wobble when I first started it up.
Full speed
had to do it at about 100rpm
Still frightning though.
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paulf
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| posted on 18/5/08 at 05:08 PM |
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I usually use a hole saw for things like that, a good HSS one will do lots of holes but the cheapo ones might only last for one .
Paul.
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Liam
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| posted on 18/5/08 at 08:35 PM |
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Took mine to me local precision engineers (or anz fabricators ought to do). I now have hole saws. Easy
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