I am center spot drilling with this
very small center drill
where the location for the port
has to start. We're going to have to take
these out and tilt them or I may have to
tilt the heads or I haven't decided
exactly yet what's going to be easiest
but to drill the angled ports into the
cylinders first we're going to do
this it's just a small hole, just
enough so I could get 
a drill hopefully to catch on the angle.
They're just small holes they're 1/2
inch from the center of this bore.
Quite the setup, but you work with what
you have, and my two angle plates sine
bar a couple clamps and clamped down to
the table square.
And I tilted the head and we were
pretty good, within half a thousand to a
thousandth which is just fine. All right
we're ready to align on our little marks
here I'm just taking the scribe popping
it in the Chuck.
We'll check the run out on it, wow that
looks spot-on
you wouldn't know it's turning if you
didn't touch it. Hopefully yours is that
way. Now in the DRO I
have saved the the zero point, so
that's the same it hasn't changed we
haven't moved the vise or anything and
the Y position of course has changed but
we're going to come right in so I set it
at my x0 and then I just lined it up on
Y to go right in the middle of my little
hole I drilled with the spot drill it
in there and that's what we're going to
do we're just going to drill that.
Alright this is an end mill now I'm
putting it in a Chuck. it's
a 1/16" end mill and all I'm going to do is
spot a hole so my drill will go in there
now I'm using a number 43 drill which is
eighty nine thousandths and this will
give me a little bit better start to it
at least that's the plan we're just
going to spot in there
well it's all good so far
now we're going to drill it
yeah I've seen a little rub off
push off there just in case that was
going to happen
that other one wasn't big enough this
is. This is about 
3/32" this is
fifty-thousand bigger I'm just going to
come in and touch it though
just so it won't push off so much and
just cleaned up that edge
and it looks a little better
it doesn't look too shabby now I'm going
to shift over to the other cylinder and
do the same hole.
[Music]
oh yeah
very nice and we're turned around the
other way
28 degrees boom boom one more hole to do
