Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default NB-making small things on big machines

Longtime woodworker now developing another addiction-need some
lathe/mill (separate machines) advice. I would like to be able to make
some train parts for an HO train set at the small end of my projects,
and figure lawnmower engine parts, other machines, etc. for bigger end.

Is there any reason why I could not make such small parts on say a
12x36 lathe?

Thanks for your help.

ps love all the stories here of people moving car-weight machines with
pipes, wood, and metal bars,especially the guy doing it in the leg
cast. Reminds me of the time I roto-tilled my yard 3 days after hernia
surgery and decided it would be a good idea to remove the
runaway-prevention bar at the back.

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The difficulty with machining small parts on (relatively) large
machines is the lack of high speeds required for small diameter work,
be it the turning of shafts, drilling of holes, milling of features.

I own a Maximat V10P with a top speed of 2500 rpm (roughly a ten inch
lathe) and small turning/drilling drilling is not easy on this machine.
It can be done but takes great care not to break the part or drill,
tap, die, etc.

For small stuff, say 3/16" dia or less I have a swiss watchmakers lathe
complete with toolmaker's cross slide, 3 and 6 jaw chucks, and a Dremel
drill chuck fitted to the tail stock. It has no povision for
threading, but for these small sizes taps and dies are more
appropriate. For the tiny stuff this machine is a pleasure to use.

If you already have the 12" lathe, or it is priced too good too pass
up, your solution may be to fit a watchmakers spindle into the
headstock taper. This is a small, separately powered spindle which
will accept watchmaker lathe collets and chucks.

Being separately powered it can have the high speed desirable for small
work.

Wolfgang

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Thanks for the replies-excellent information Wolfgang.

Andy

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everyman
 
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I broke my ankle and had a halo (metal content) but wasn't allowed to walk
on it for 3 weeks. I'd missed my kung fu classes for two weeks and couldn't
take it any longer so I rode my bike to class. It was the right ankle so I
could shift just no rear brake. Crutches crossways across the handlebars. Of
course the Ladies that ran my bone Dr's office saw me and told him. I show
up on crutches by way of motorcycle and they're laughing at me and said they
saw me and told him. He didn't say a thing about it during the exam. Just
said "Be careful" over and over. I did everything he told me. Don't know
what he was so worried about.
Karl

"Gunner Asch" wrote in message
...
On 14 Dec 2005 08:49:22 -0800, wrote:

ps love all the stories here of people moving car-weight machines with
pipes, wood, and metal bars,especially the guy doing it in the leg
cast. Reminds me of the time I roto-tilled my yard 3 days after hernia
surgery and decided it would be a good idea to remove the
runaway-prevention bar at the back.


Shortly after I had my first back surgery..when i went in to get the
staples removed..the doctor was ****ed when he discovered my leathers
and motorcycle helmet in the corner of the treatment room.

It was only 47 miles each way..shrug

Gunner

"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner





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jw
 
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everyman wrote:
I broke my ankle and had a halo (metal content) but wasn't allowed to walk
on it for 3 weeks. I'd missed my kung fu classes for two weeks and couldn't
take it any longer so I rode my bike to class. It was the right ankle so I
could shift just no rear brake. Crutches crossways across the handlebars. Of


I did something pretty similar about 3 yrs ago. I had been on
crutches for about 6wks(w/ at least another 12 to go). I was going so
stir crazy I had to get out. Since I couldn't drive a vehicle(hard to
run the gas pedal in a full leg cast), I took the bike. Getting on/off
was a little tricky, but it sure felt good to get out a little.

Never bothered to tell the doctor(or my wife for that matter).

JW

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daniel peterman
 
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Default NB-making small things on big machines

Back around 78 I tore up my left knee real bad when I hit a dog on my
RD400. Slid down the road with the bike on top of me for about 40 feet.
Major ligament and cartilage damage.
I had to ride that bike to the physical therapy sessions in the snow
twice a week.
Sold it soon after

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jw
 
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daniel peterman wrote:
Back around 78 I tore up my left knee real bad when I hit a dog on my
RD400. Slid down the road with the bike on top of me for about 40 feet.
Major ligament and cartilage damage.
I had to ride that bike to the physical therapy sessions in the snow
twice a week.
Sold it soon after


Ouch.

But better than me. I wasn't able to leave "the ward" until I had
completed two weeks of PT. Talk about going stir crazy. When I wasn't
in PT, about the only thing I could do was watch TV. I rarely watch
TV.

FWIW, how I got there was to get T-boned by a Freightliner. Somehow I,
more or less, walked away from it. My right leg was destroyed, but 3
yrs later I can walk pretty much fine. There is a lot of SS and
titanium in that leg, but it functions "normally".

They had told me I would be lucky to leave in less than 2 months. I
told them I would be out in 2 weeks. I was. Still spent 6 months of
limited mobility at home, but at least I was at home.


JW

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everyman
 
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Default NB-making small things on big machines

A friend of mine blew out her ACL. She had rode a bicycle everywhere before
that. So she bought a motorcycle.
Karl


"daniel peterman" wrote in message
...
Back around 78 I tore up my left knee real bad when I hit a dog on my
RD400. Slid down the road with the bike on top of me for about 40 feet.
Major ligament and cartilage damage.
I had to ride that bike to the physical therapy sessions in the snow
twice a week.
Sold it soon after



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everyman
 
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Default NB-making small things on big machines

I was only supposed to stay in the hospital over night but I lied and told
my Dr. that was someone at home to help me. Then my friend came and picked
me up and I went to the gym I ran and hung out there.
Karl

jw" wrote in message
ups.com...

daniel peterman wrote:
Back around 78 I tore up my left knee real bad when I hit a dog on my
RD400. Slid down the road with the bike on top of me for about 40 feet.
Major ligament and cartilage damage.
I had to ride that bike to the physical therapy sessions in the snow
twice a week.
Sold it soon after


Ouch.

But better than me. I wasn't able to leave "the ward" until I had
completed two weeks of PT. Talk about going stir crazy. When I wasn't
in PT, about the only thing I could do was watch TV. I rarely watch
TV.

FWIW, how I got there was to get T-boned by a Freightliner. Somehow I,
more or less, walked away from it. My right leg was destroyed, but 3
yrs later I can walk pretty much fine. There is a lot of SS and
titanium in that leg, but it functions "normally".

They had told me I would be lucky to leave in less than 2 months. I
told them I would be out in 2 weeks. I was. Still spent 6 months of
limited mobility at home, but at least I was at home.


JW



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JCM
 
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Default NB-making small things on big machines

My Dad had a cast on his arm, and found it difficult to do bodywork -
the weight of the cast along with holding the hammering dolly... He
eventually used the cast as the dolly - held it up under the metal while
he hammered on top. After a while the cast was beaten to a pulp so Dad
mixed up a batch of PolyFilla and repaired it. The technician in charge
of removing the cast several weeks later had a helluva time cutting
through that Poly!
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