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Thread: How to Hold This?
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21st Oct 2021, 01:02 PM #1
How to Hold This?
I have this piece of aluminium 140 x 20mm
That I would like to if possible to cut out the 70mm centre so I can use it later.
My problem is that I don’t have a chuck large enough, is any I hold it on a 9 x 20 lathe?
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Ratty 05/2004 -05/07/2010 COOPER 01/08/1998-31/01/2012
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21st Oct 2021, 01:21 PM #2Most Valued Member
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Mount on a face plate and trepan it?
Or mount on a rotary table and gang drill using 5mm drill bit.
Or, measure out, centre punch and drill on a drill press. Then use a jig saw.
Simon
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21st Oct 2021, 02:08 PM #3Golden Member
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how about holesaw?
I have done 1" thick with holesaw before
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21st Oct 2021, 05:13 PM #4Diamond Member
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If you don't have a faceplate, you could always mount as large as reasonably possible stub of round bar, or even a chunky piece of plate into the largest chuck that you have, face it off and then use cyanoacrylate adhesive to mount your aluminium workpiece. If trepanning you could use the tailstock for support, or if using a holesaw, obviously that is not so easy to arrange additional support, but the holesaw itself becomes the support at the cost of "the dump" being left with a hole in it. Good luck.
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21st Oct 2021, 05:16 PM #5Most Valued Member
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So the 70mm centre piece is the waste that you want to keep for a future project? What operations do you want to perform on the resulting ring after removing the centre?
Chris
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21st Oct 2021, 08:32 PM #6Most Valued Member
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Holesaw in a drill press/mill or chuck it in a four jaw and holesaw in the tailstock if you can clear the jaws.
Could also drill a small hole and cut the centre out with a scrolling blade in a jigsaw.
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22nd Oct 2021, 06:53 PM #7
Thanks for your replies every one, I never thought of using hole saws to cut that deep.
My plan is to make a holder for a LED ring light to mount on my drill
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I used a hole saw took a while but got through OK.
Ratty 05/2004 -05/07/2010 COOPER 01/08/1998-31/01/2012
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23rd Oct 2021, 05:21 PM #8Most Valued Member
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Good tip with using a holesaw on thick material is to drill one or more smaller holes that the holesaw teeth will cut into. Helps to clear the swarf out of the gullets of the teeth.
Steve
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