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<p>The last time that big lathe was used was to bore some big
oilfield engines. They centered the block on the 4 jaw chuck and
bored it!! It came from an old oilfield machine shop in OKC.
The Berco crank grinder also came from the oil patch. It will
grind about an 8ft long crank.. Right now, I need to shove a lot
of junk out of the buildings and get something working.. I have
so many projects that got stopped either due to lack of parts,
money, or time. <br>
</p>
<div class="moz-cite-prefix">On 4/3/2020 7:38 PM, John Hall wrote:<br>
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Believe it or not, there are some guys that like to collect older
machine shop equipment. Shapers seem to gather a lot of attention
on Facebook. Those and belt drive equipment were signs of a shop
to run away from when I started this trade.<br>
<br>
Those big lathes are either a curse or a blessing. Our TOS will go
around 30" with the gap out. There have been times we could have
used bigger. Normally it collects dust, firing up 2-3 times a
year. It pulled about a 3 week stint last summer.<br>
<br>
John Hall<br>
<br>
<div class="moz-cite-prefix">On 4/3/2020 12:01 PM, Cecil Bearden
wrote:<br>
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<p>After Ithought a little, I forgot about the 48x120 gap bed
lathe, the 24in shaper, the 12x36 surface grinder and the
other one sitting outside that was dropped off a forklift at
the shippers. I have a 36in Yates American Bandsaw that a
forklift operator dropped while loading. It was one the Navy
owned during WWII that sawed the decking for ships. I have
another 36in that I need to try to get working. I also have
a 40 ton horn press. in addition to the 40 ton ironworker.
and a Warner swasey #2 turret lathe, and somewhere around here
is an old screw machine. There is a couple of multiple
spindle drills and all manner of old machines.... There are
not very many young folks that know how to operate these old
machines. Just not a lot of demand for one-off repair work
either.. Both old guys that were my teachers in my machine
work are now gone.. <br>
</p>
<div class="moz-cite-prefix">On 4/3/2020 10:46 AM, Stephen
Offiler wrote:<br>
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<div dir="ltr">I was just out on the factory floor and noticed
one of the CNC's was about to hit a bar change, and figured
I'd try to capture a video of the whole thing. It starts
with a quick overview of the CNC and the bar feeder sitting
at idle. Then it shows the part being made, which is the
handle of our double-ended machinist scribe. Then I fire it
up to make the last possible part before the bar is
effectively consumed, then we see a part being made,
although it is kind of hard to see due to the coolant
splash. Then it does the bar change, consisting of pulling
back the "remnant" (the end of the bar that's now too short
to make another part) while dropping a new 12' bar, engaging
it, and feeding it into the machine to continue automatic
operation.
<div><br>
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<div><a href="https://youtu.be/uy57CqHdicg"
moz-do-not-send="true">https://youtu.be/uy57CqHdicg</a><br>
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<div><br>
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<div><br>
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<div>SO</div>
<div><br>
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<br>
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<div dir="ltr" class="gmail_attr">On Fri, Apr 3, 2020 at
10:27 AM Stephen Offiler <<a
href="mailto:soffiler@gmail.com" moz-do-not-send="true">soffiler@gmail.com</a>>
wrote:<br>
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0.8ex;border-left:1px solid
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<div dir="ltr">Wow, Cecil, that's quite an equipment
list! Some big heavy stuff on that list! The only
manual machining I do is making little tools, jigs &
fixtures, and "my" shop here at work has just one (very
nice) Hardinge HLV-H "Super Precision" lathe, a 2J-head
Bridgeport, a Kent 6x18 grinder, and a DoAll bandsaw.
The magic is always in the accessories; the 5C collets
and the 4-jaw chuck for the Hardinge, the R8 collets for
the mill, the various precision vises and other
workholding for mill & grinder, indexing heads, and
a whole compliment of cutters, drills, taps, wheels, etc
etc.
<div><br>
</div>
<div>Oh and I do owe you a response on the ESAB plasma
cutter. Unfortunately, it's a pass. Sorry. We have
this one job we're developing now that involves making
rather precise cuts, but we're already down that road
with a chop-saw that's working quite well. We just do
basically zero with sheet material most suited for
plasma.</div>
<div><br>
</div>
<div>SO</div>
<div> </div>
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<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Apr 3, 2020 at
9:54 AM Cecil Bearden <<a
href="mailto:crbearden@copper.net" target="_blank"
moz-do-not-send="true">crbearden@copper.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">I planned to open a
machine shop when I retired.. However, here in OK <br>
there is not much demand and the only jobs I had were
making some <br>
decorating crap for some traveling vendors. The
biggest job was wire <br>
forming for some Potpourri Pie holders. I had to
build a jig to bend <br>
the handles with an air cylinder and rack and pinion.
Then I had to roll <br>
a ring and weld it together with m spot welder then
spot weld the rings <br>
to the handles The handles were also the feet to hold
it above the <br>
stove burner. I lost the pics of it. I had a 20KW
spot welder and had <br>
traded for a 10hp Variable frequency driver and motor
from a technical <br>
school. I dropped the amperage with the variable
frequency drive to <br>
keep from burning the wires up. The wires were about
3/16 dia.<br>
It was fun for a while, then I felt like I was wasting
my talents on <br>
crap... Machine shops were closing down here to send
jobs offshore. <br>
So, I have a building with a 36x120 lathe, a 16x84
lathe, a 9x40 lathe, <br>
a Cincinnati Mill with a 16x72 table and universal
head, 2ea Kearney <br>
Trecker mills with universal heads, another later
model Cincinnati <br>
overarm mill with a 16 x 72 table, A Bridgeport, a
couple of knee mills <br>
one Japanese, the other old old US made. I did one
job with the newer <br>
Cincinnati overarm making T-nuts for a big holding
table. Now they just <br>
sit in case I need to make a part for my old junk.
Then I was going to <br>
build industrial engines, and bought the boring bars,
head work <br>
equipment and a big big crank grinder. Never got the
crank grinder set <br>
up. It is still on a trailer and a stray tornado took
out the building <br>
it was stored under.<br>
Cecil<br>
<br>
On 4/3/2020 7:01 AM, Mark Johnson wrote:<br>
> Hey - no problem with the CNC talk, at least not
from me. I've been a <br>
> software guy all my life but I find machining
absolutely fascinating - <br>
> wish I had learned more about it! I'm learning
now...<br>
><br>
> Mark J<br>
><br>
> Columbia, MO<br>
><br>
> On 4/3/2020 5:38 AM, Stephen Offiler wrote:<br>
>> Hi John -<br>
>><br>
>> Hope the list will tolerate some CNC banter.
We have 1 job that we <br>
>> hold close, using .0001" offsets; all the
rest it would be more like <br>
>> .0005" or more. Swiss excels in small
precise stuff and also long <br>
>> slender stuff, and we are heavy on the
latter. Don't need all that <br>
>> precision, but it's handy to have: I can
give the guys setup sheets <br>
>> with .XXX" dimensions and no tolerance, and
they can hit the numbers <br>
>> dead-on quite easily. Keeps me from having to
even think about <br>
>> tolerances which is quite a luxury for an
engineer.<br>
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