On 2008-06-11, BillM wrote:
Got a boring job to do in the mill. Big ugly
casting, and I need to reach about 7" down
through a 3.25" hole. Problem is that my ram is
3.5". I would like to use my boring head
rather than a fly cutter. Does anybody make a
R8 male by R8 female extension? Around
5" would do it.

Think again.

And you will realize that a "collet" needs to be compressed which your
extension would not be.

Your best bet would be to get a shaft like 3/4", and bore a hole to
fit your cutter, and use a weld-on style setscrew to hold it. And mae
the cuts light.

i

Thanks,

Bill



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