CL430/500 Lathe Tooling size

CL430/500 Lathe Tooling size

This topic has 4 replies, 5 voices, and was last updated 19 December 2024 at 19:35 by Bazyle.

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19 December 2024 at 16:30 #771089
Gary Lynch
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@garylynch39491
HI All
What is the best tooling size to use in a Clarke Cl430/500 Lathe?

Thanks Gary
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19 December 2024 at 18:30 #771128
bernard towers
Participant
@bernardtowers37738
usually the largest one that fits the tool post and able to be on centre height
19 December 2024 at 18:48 #771140
Howard Lewis
Participant
@howardlewis46836
Yes, as Bernard says, the largest practicable, to maximise rigidity.

Howard
19 December 2024 at 18:56 #771143
JasonB
Moderator
@jasonb
I’d say the opposite in most cases. Why spend an age grinding a bit of 1/2″ square HSS when for most jobs a 1/4″ square will do. It is only really when you can’t avoid excessive tool stickout that bigger helps. keeps the costs down too

likewise with inserts no need for a really big cross section holder when say 8mm will do, many a modern benchtop machine won’t have the power to need the rigidity of a larger tool and will just flex elsewhere particularly the jacked up CL500 . Smaller holders also tend to take smaller inserts so again a cost saving.
19 December 2024 at 19:35 #771166
Bazyle
Participant
@bazyle
100% Jason. ‘fraid it rather annoys me to read some new users thinking they must use the biggest that will fit the toolpost gap then complain it is above centre.

Although I’ve not used anything bigger than 24in swing (at work obviously) I have never needed anything bigger than 1/4″. While I have some 3/8″ and even a bit of 1″ that is only because they came as freebies with something else. Often better to make a holder if you need more stick-out. I do have some Armstrong holders designed for that purpose but they don’t actually fit any of my lathes! Used to use them in the B&S at work where they just didn’t waste money on any HSS larger than 1/4″. Defence contracts were so tight (not) we had to save every penny.
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