HI Gene,
Being always caught outside the box but still having to think I made a
large t-nut that goes in the cross-slide, then a block of steel large
enough to accommodate a couple of 1/2" gr 8 cap screws and a hole
centered between the bolts but obviously at 90 degrees with the proper
taper for a 5C.
The collet just hangs out the rear of the block and I can clamp up
boring bars of varying size using a bronze nut threaded for the rear
thread of the collet,
Naturally I ended up making a wrench to fit the nut. Nothing is ever
easy. :-) YMMV
Dave
On 5/3/20 10:57 AM, Gene Heskett wrote:
But the odd size is 7/8" because that is the size of the brass rod I made
about 100 tap hats from.
This is to go with the gcode I've written to stop broken taps forever.
I'll need to dedicate a 3/4" to lock a probe into forever, and a matching
7/8" to hold the tap-hat in.
The one bar holder I have, came with the qctp kit is a 250-204, is 3/4"
with the sleeve or 1" without it. And side of tool wedging screws,
which I hate because they damage the tools if tightened enough to hold
the tool. I'd druther have a good fit and draw screws to squeeze the
steel across the gap. I made one sorta like that for the 7x12 many
years ago but thar doesn't give me the qctp's fine veritcal position
needed for this.
Banggood doesn't have, Shars doesn't have. Am I going to have to make
them?
What I need is 7/8" that I can mill a shallow antirotation notch in the
edge of to engage the 4mm cap screw inset into the side of the tap hat.
Cheers, Gene Heskett
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