On 2008-03-23, Joseph Gwinn wrote:
In article ,
"DoN. Nichols" wrote:
On 2008-03-22, Joseph Gwinn wrote:
In article ,
"DoN. Nichols" wrote:
[ ... ]
Well ... Opera has been the best browser for my use (on a Sun
UltraSPARC Workstation running Solaris 10) with only one site regularly
crashing it on the first visit each time the page is changed. That is a
web-based comic called Ctl-Alt-Del.
OK. Maybe they have solved the many problems I found.
I think so. At least on the Sun Solaris workstations, which is
the only place that I've tried it so far.
Perhaps I'll re-evaluate Opera. Nor do they seem likely to die now.
IOt has to have been at least 5 years.
O.K. I seem to remember that when I first got it, I would have
had to pay if I were a commercial user, but as a home users I was in the
clear. So that might be a bit after your $40.00 fee period.
[ ... ]
And someone who insists on publishing a web comic entirely in
Flash -- which I could not read for a while until the Flash plugin
version for Solaris finally caught up with his requirements.
Before, he had been running one which would work fine except
for not having a singing-dancing logo. Then he went to requiring the
latest Flash for the whole thing -- and thus lost me for several months.
If he does something like that again, he will lose me
permanently. :-)
Flash is a problem to be sure. On my Mac, with Firefox, flash windows
are simply absent, while Safari works OK with Flash. I would guess from
your comments that Flash will work OK on Opera as well.
Yes -- if you download the plug in and put it in the right
place. On a Mac, I would guess that the "put it in the right place" is
pretty automated. I tend to download the static libraries version of
the Solaris, with the gzip compression of a tar file so I can have more
personal control over where to put it than a ".pkg" version would give.
I tend to put each version in its own subdirectory in /opt so I can back
up to an earlier version if something breaks. (I do this with almost
everything which does not automatically install in /opt anyway. :-)
[ ... ]
Now there is a thought. Also, I wonder if DTF comes thinner.
I would have to go downstairs and do some digging to find out
which version I'm currently using on the Sanford surface grinder
spindle.
DTF24 is the lowest viscosity member, at ISO 32.
MSC lists two spindle oils, Mobil Velocite and Tru-Edge. Both are
thinner than DTF24, being no thicker than ISO 22, so it's probably a
good idea to get some real spindle oil.
For the DuMore toolpost grinder -- at least go for the lube
which they specify in the manual. You got a copy of my manual, didn't
you?
[ ... ]
Well, it would become a permanent part of the setup. The BXA toolpost
has a 3/8" (by eye) blind hole in the bottom, clearly intended for an
anti-rotation pin. So such a spacer plate would have a ridge below and
a 3/8 hole to accept a short 3/8 dowel rod.
O.K. I've just verified that my Phase-II has the same hole. I
didn't bother measuring it (yet) to see whether it wound up at some
metric size close to 3/8". :-)
[ ... ]
I was thinking of milling a plate down so the thickness away from the
ridge is about 0.125". That's plenty for the pin to engage. The
alternative is to drill a hole in the compound.
O.K. I'm not sure whether 1/8" is thin enough. I would have to
check again. I think that I come out near 1/10" instead.
A 0.1" spacer is also thick enough for the index pin to be reliable.
The spacer is mostly in pure compression, and so need not be thick.
And -- I just measured, and find 0.550" clearance between the bottom of
the tool holder and the top of the compound, so one is certainly on the
project list. I might even make two plates -- one with the 3/8" pin and
one hole, and the other with an arc of holes to accept a pin at all of
the common compound settings (90 degrees, +/- 14 degrees, +/- 29.5
degrees,+/- 45 degrees etc)j which I can shift without having to lift
the toolpost clear of the 3/8" pin. Put a large arc of holes on the side of the
compound away from the workpiece so I can get higher resolution and
easier access for changing. Perhaps tap the upper hole, and make a
dog-pint screw to engage the lower hole.
And drilling the compound makes it a bit tricky getting it in
just the right place for a given angle.
And one may not be able to drill all the needed holes, if the compound
was not designed to be drilled there.
Exactly.
[ ... ]
OK. I haven't been tempted to get an indexable toolpost. First, I'll
use the non-indexed stuff, for the experience.
Generally, it is more flexible than the turret toolpost, with the
turret toolpost only winning when you are doing production runs.
("It" being the quick-change toolpost, not the indexable
toolpost).
Makes sense.
[ ... ]
Well, right now my shop is my personal schoolroom. My first debate is
still if the problem of the moment is due to a mistake I'm making, or to
something needing repair or adjustment.
O.K. I spent quite a while learning to use the turret tooling,
for which I had no previous experience, and there was nobody with
experience around to ask.
Yes. Although you had a head start, already knowing lathes.
At least from the little Unimat SL-1000 up through 12" or 13"
swing machines.
My latest cycle with chatter while cutting off a steel bar is that
turning the test bar down to eliminate the rough surface did not solve
the chatter when the now trued bar was clamped in the 3-jaw chuck,
although a pry test now shows more or less equal displacement of chuck
and bar, implying that the bar is now firmly clamped in the chuck.
O.K.
Machining to reduce diameter and/or threading is quiet and uneventful,
although the threads are ratty, with cracks perpendicular to the surface
and to the direction of tool travel. This is true both for the original
test bar (not marked, but appears to be 1018 CRS) and for a 0.75"
diameter 1018 CRS bar bought new.
1018 and the like tend to machine poorly, and this could account
for the poor threads. If you want something lovely to machine, get some
12L14 (leaded free-machining steel). Its only disadvantage (other than
somewhat higher cost) is that it is very poor for welding.
A 0.75" diameter CRS bar held in a collet was easily cut off, without
chatter or drama. One test I will make is to hold a piece of that same
0.75" diameter CRS rod in the 3-jaw chuck and try to cut it off.
And also see what happens when you try to thread that.
I've also been assiduously cleaning and deburring the mating surfaces of
the L00 taper on headstock spindle (male) and on 3-jaw chuck (female).
I did see a stuck chip come off when I used a very fine file on the
headstock taper. Prior wiping with a shop towel had not dislodged this
chip, which was hard to get to, being up under the big threaded clamping
ring. Perhaps stuck chips were the root cause.
That could be. The 1018 may be another contributor.
Enjoy,
DoN.
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