But I need it for the boring head in the Bridgy, to turn down the OD
of a part that overall will be far too big to fit in the lathe
And I probably should have mentioned I'm lloking for something in 1/2"
shank diameter, as there are plenty of 12mm ones out there.
Ask Kennametal to supply something out their American catalogue,it
will be imperial.
I buy solid carbide insert threading bars at 3/8" dia as it lets me
screwcut left and righthand threads in bores that I could not get a
metric bar to do.
Ask a mate in the States to source it for you.
JL Industrial http://www.mscjlindustrial.co.uk/cgi/insrhm have several in
12mm or if that's too loose in the boring head, get a 16mm and turn the
shank down to 1/2" (I had to do this as my Elliot boring head is also 1/2");
search for boring bar lh.
Okay, I may be dumb, but what do you need one for?
(and BTW they are handed; and reversing them, turning them upside down,
running backwards, or whatever in combination, won't ever change that)
On Sat, 03 Oct 2009 23:21:22 +0100, Peter Fairbrother
It's for use in the milling machine, not the lathe.
It's a little mould tool project I'm working on. A block of P20 steel
about 130mm x 120mm x 30mm thick, with a shaped pocket cut into this ,
10mm deep at some points and 16mm deep in others.
Standing up from the base of the pocket are a number of round bosses
of different size and height.
It's these bosses that need to be turned down on the outside to
certain sizes, and I'm going to use the boring head to do this, hence
the L/H tool to cut on the outside diameter of these.
On the mill I can just pick up a single datum then index to the
co-ordinate positions and cut the bosses.
It would be very simple on a CNC but I don't have one, so I have to do
it the old fashioned way.
Then "Shirley" you can just turn your cutter around by 180deg, in the
boring head, and run in reverse? I put in a switch for reverse on my
X2 so that I could run a large diameter fly cutter using an old 10mm
carbide milling cutter for the cutting edge.
Ok, I must have this envisaged wrong. If its for boring, in such a
position as the carbide bit
is on the outside of the circle it makes then I think if you were to
turn it round, so the carbide
bit is on the inside of the circle and run it backwards would it not
do the job as described?
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