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PekkaNF:
Hello Dave
Welcome.
Any paricular reason for 1888? It sounded familiar number.
http://en.wikipedia.org/wiki/1888
There are many different toolposts. All might not allow larger toolholder. Isn't 5/8" like 16mm? I suggest a reality check. Put the tool on the toolpost without shims and check if the cutting edge is at aproximate centre height (centre on the tailstock, caliber, ruler....). If you can adjust it to the centre height = no problem. If it comes higher and there is no way adjusting: Take a picture and start a thread on "How do I??" section. Someone is bound to have same lathe and probably even same toolpost!
Pekka
andyf:
Hi Dave,
If you have a standard toolpost (a simple block with slots for tools in all four sides) then the ideal would be tools with shanks of such a size that the business end falls dead on centre height. You are unlikely to find those, and resharpening will alter the height of the sharp end anyway. So you need to get tools smaller than the ideal, and assemble a collection of shims of varying thickness to use as packing beneath them. To save fiddling about each time you change a tool, get some small containers in which you can store each tool and the shims which get it to the right height, though HSS tools ground to shape at each end complicate this.
I'm not familiar with Myfords, but 5/8" sounds a bit on the big side for a lathe of (?) 3.5" centre height.
If you do go in for grinding your own tools, bear in mind that smaller sizes of blank like 1/4" or 6mm square need a lot less grinding. Though there is some loss of rigidity, this is usually of no real consequence if overhang is kept to a minimum. My lathe will take 3/8" or 10mm tools, but I use 6mm much of the time.
Andy
dave1888:
The problem is the shanks are to big, I should be using 5/16 shanks instead of 5/8.
Brass_Machine:
Hiya Dave :wave:
Welcome to the collective :borg:
Tell us a little more about yourself. :med:
Eric
doubleboost:
Hi
Dave
Welcome to mad modders
Myfords usually use 3/8 or 10 mill tooling
John
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