MadModder
Gallery, Projects and General => How do I?? => Topic started by: DaveH on June 30, 2011, 01:30:50 PM
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Hi,
Is there a specified or specific way the measure the run out.
How far from the collet should I measure it? 5mm……..10mm …….50mm? :scratch:
DaveH
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Hi
Dave
The less runout you have the better after playing around with my homemade holder this is the result
Click the picture :thumbup:
(http://i261.photobucket.com/albums/ii63/john970s0/th_P5300016.jpg) (http://s261.photobucket.com/albums/ii63/john970s0/?action=view¤t=P5300016.mp4)
That is a metric clock less than .002mm at 3 inches :bugeye: :bugeye:very happy
From what i have been told 1.5 thou is about the norm for a bought one
John
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Hi John,
Is 3" from the collet the sort of standard for all sizes.
Or does it change depending on the diameter.
DaveH
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I would think the collet size would make no differance (the collets will be precision ground)
It will be the holder that is in need of fettling
3 inches from the collett is just the length of the tool i had handy
I am not sure what the speck is
John
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Hi,
This is what I've found out from different sources. :scratch:
a) Measure it 4 x dia from the collet.
b) Measure it 1 x dia from the collet.
c) Measure it as close to the collet as posible.
Now (a) 4 x dia seems a long way to me. 12 dia ends up 48 mm from the collet. [ John did 3" ]
(b) seems sensible.
(c) seems to me the right place. (But I really don't know)
How do the manufactures measure it. :scratch:
I would still like to keep it simple for the home workshop. :D
Anyone have any views or comment. I would like to hear. :D
:beer:
DaveH