If it were me, I'd go for the longer one funds permitting.? I just managed to make a new 11 inch screw on my 7x14.? Like someone else said, length gets eaten up with a tail stock, live center, drill chuck and whatever else you may need at that end.? I got it done and it came out really nice but man, that extra two inches would have made life a lot easier.? It's easier to use less of the machine than to make it longer.? :-)
You make some really good points so I think I need to explain my situation.? So I am a retired Boilermaker.? These days keep active by building various things in my shed. Every now and then I run into a situation where I might need a shaf to run between bearings, or a bronze bush, an aluminium pulley or a simple hinge, you get the idea. Up until now I have been either trying to buy these things off the shelf, or paying someone to machine something for me. I just thought it would be nice to have a little machine so I can do most of these tasks myself.
I am no machinist that's for sure, infact only ti.e I've even been near a lathe was in metalwork class at high school and possibly at trade school though I am competent enough to learn or at least have a go at it.
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You make some really good points so I think I need to explain my situation.? So I am a retired Boilermaker.? These days keep active by building various things in my shed. Every now and then I run into a situation where I might need a shaf to run between bearings, or a bronze bush, an aluminium pulley or a simple hinge, you get the idea. Up until now I have been either trying to buy these things off the shelf, or paying someone to machine something for me. I just thought it would be nice to have a little machine so I can do most of these tasks myself.
I am no machinist that's for sure, infact only ti.e I've even been near a lathe was in metalwork class at high school and possibly at trade school though I am competent enough to learn or at least have a go at it.
|
Having spent decades regretting buying the cheaper version of a tool instead of the slightly more expensive version with an added feature I'd love to have, I agree with the idea of buy the best you can find!
?
Roy
|
I'm not completely expert in the differences and just rambling from memory.
But first, I don't think anybody can say if lathe X is better than lathe Y - for YOU.
It is my understanding that the SC3 has a better motor arrangement and also a longer bed (7x16 instead of 7x14).
For ME, I would absolutely go with the longer bed.? That distance can gets used up pretty fast with a chuck in the headstock, work piece, drill, and Jacobs chuck in the tail stock.? I also like a longer bed so I can move the tailstock further out of my way when not using it.
But plenty are fine with the various shorter bed models.
Another thing I think about is the cost of the tooling.? And how I would feel paying the same money for tooling (chucks, better tool post, and on and on) for the lathe I didn't really want versus the lathe I really did want.? So, I suggest it is often best to go for the most machine you reasonably can unless cost is absolutely a major factor.
That would also mean looking at options other than C3 versus SC3 and perhaps other lathes.
Charles E. "Chuck" Kinzer
On Sunday, December 15, 2024 at 02:40:45 PM PST, Old Boilermaker via groups.io <alned03@...> wrote:
Contemplating buying a mini lathe for home use. Is it worth spending the extra money to buy a SC3 as opposed to a C3 ?.
|
Contemplating buying a mini lathe for home use. Is it worth spending the extra money to buy a SC3 as opposed to a C3 ?.
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Re: Digital Electronic Vernier Caliper
I got mine for a pittance at a flea market years ago! One of its virtues is the way it nicely fits into a shop apron pocket for ready availability.
?
Roy
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Re: Digital Electronic Vernier Caliper
Photo of my stainless steel Starrett calipers?
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Re: Digital Electronic Vernier Caliper
I do not use Electronic Vernier Caliperon on machine work .??
Only mics .
?
I use only for locating of stock/materials or ruff sizes. I like use my stainless never needs batteries. It is a Starrett stainless steel side caliper. Do not look price?
?
Dave?
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Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
??? ??? yea sometimes these off topic derailments actually grow
some teeth . WHen yer through learning yer through .
animal
On 12/10/24 5:11 PM, Johannes wrote:
toggle quoted message
Show quoted text
I started this subject about digital calipers and external noice
that kill the numbers. Many interesting input. I tested my
Digitals closed to my strong ceiling LED lamp, no ugly reaction.
However, I replaced it to old type Edison 100 w lamp to be safe.
Tested ?in 2 days now, no more problems than normal.
Johannes ? Lavoll. ? ? ? ? ? ? ?
?
Dear Jeff,
Thank you again for another XLNT and very detailed
description.
David Williams Nr. Oxford UK
?
??? John & Jeff , thanks for the extra
explanation . I unfortunately never learned to TIG
( that was left for the teach & his stars back
in the 70's ) & odds are pretty darn good that
at this stage i probably won't , but I now have a
better understanding of how this works .?
thanks again?
animal
?
On 12/10/24 5:50 AM,
flyfishingdude9 via groups.io wrote:
Well said Buffalo John!
?
As stated, GTAW is no different than any
other arc producing operation.? However, there
is a feature that makes it standout from others
- HF start.
?
There are three methods to starting a TIG
weld: scratch, lift, and HF.?
?
Scratch - like old-time stick welding the
tungsten is scratched on the work piece starting
the arc.?
Lift - the tungsten is touched to the work
piece, there is a surge in amperage starting the
arc.?
HF (high frequency) - a brief (I have my
machine set to 1 second) current is passed to
the tungsten at a high frequency which initiates
the arc.? This high frequency I believe is in
the 180 - 250 khz range.? The tungsten does not
come in contact with the work piece avoiding any
contamination.? This burst of HF is what was
messing with my shop.? Outside of the
cross-spectrum interference that arc welding
generates this little burst in RF makes the
welder a little transmitter for a second.
?
Stick and MIG have no effect on my
electronics, and since I have moved the TIG
operation to the other side of the shop all is
well.? Yes, the inverse
square law applies. ?
?
Jeff
|
Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
I started this subject about digital calipers and external noice that kill the numbers. Many interesting input. I tested my Digitals closed to my strong ceiling LED lamp, no ugly reaction. However, I replaced it to old type Edison 100 w lamp to be safe. Tested ?in 2 days now, no more problems than normal. Johannes ? Lavoll. ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
On 10 Dec 2024, at 17:27, DAVID WILLIAMS via groups.io <d.i.williams@...> wrote:
? Dear Jeff,
Thank you again for another XLNT and very detailed description.
David Williams Nr. Oxford UK On 10 Dec 2024, at 19:49, mike allen <animal@...> wrote:
?
??? John & Jeff , thanks for the extra explanation . I
unfortunately never learned to TIG ( that was left for the teach
& his stars back in the 70's ) & odds are pretty darn good
that at this stage i probably won't , but I now have a better
understanding of how this works .?
thanks again?
animal
?
On 12/10/24 5:50 AM, flyfishingdude9
via groups.io wrote:
Well said Buffalo John!
?
As stated, GTAW is no different than any other arc producing
operation.? However, there is a feature that makes it standout
from others - HF start.
?
There are three methods to starting a TIG weld: scratch,
lift, and HF.?
?
Scratch - like old-time stick welding the tungsten is
scratched on the work piece starting the arc.?
Lift - the tungsten is touched to the work piece, there is a
surge in amperage starting the arc.?
HF (high frequency) - a brief (I have my machine set to 1
second) current is passed to the tungsten at a high frequency
which initiates the arc.? This high frequency I believe is in
the 180 - 250 khz range.? The tungsten does not come in contact
with the work piece avoiding any contamination.? This burst of
HF is what was messing with my shop.? Outside of the
cross-spectrum interference that arc welding generates this
little burst in RF makes the welder a little transmitter for a
second.
?
Stick and MIG have no effect on my electronics, and since I
have moved the TIG operation to the other side of the shop all
is well.? Yes, the inverse
square law applies. ?
?
Jeff
|
Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
Dear Jeff,
Thank you again for another XLNT and very detailed description.
David Williams Nr. Oxford UK
toggle quoted message
Show quoted text
On 10 Dec 2024, at 19:49, mike allen <animal@...> wrote:
?
??? John & Jeff , thanks for the extra explanation . I
unfortunately never learned to TIG ( that was left for the teach
& his stars back in the 70's ) & odds are pretty darn good
that at this stage i probably won't , but I now have a better
understanding of how this works .?
thanks again?
animal
?
On 12/10/24 5:50 AM, flyfishingdude9
via groups.io wrote:
Well said Buffalo John!
?
As stated, GTAW is no different than any other arc producing
operation.? However, there is a feature that makes it standout
from others - HF start.
?
There are three methods to starting a TIG weld: scratch,
lift, and HF.?
?
Scratch - like old-time stick welding the tungsten is
scratched on the work piece starting the arc.?
Lift - the tungsten is touched to the work piece, there is a
surge in amperage starting the arc.?
HF (high frequency) - a brief (I have my machine set to 1
second) current is passed to the tungsten at a high frequency
which initiates the arc.? This high frequency I believe is in
the 180 - 250 khz range.? The tungsten does not come in contact
with the work piece avoiding any contamination.? This burst of
HF is what was messing with my shop.? Outside of the
cross-spectrum interference that arc welding generates this
little burst in RF makes the welder a little transmitter for a
second.
?
Stick and MIG have no effect on my electronics, and since I
have moved the TIG operation to the other side of the shop all
is well.? Yes, the inverse
square law applies. ?
?
Jeff
|
Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
??? John & Jeff , thanks for the extra explanation . I
unfortunately never learned to TIG ( that was left for the teach
& his stars back in the 70's ) & odds are pretty darn good
that at this stage i probably won't , but I now have a better
understanding of how this works .?
thanks again?
animal
?
On 12/10/24 5:50 AM, flyfishingdude9
via groups.io wrote:
toggle quoted message
Show quoted text
Well said Buffalo John!
?
As stated, GTAW is no different than any other arc producing
operation.? However, there is a feature that makes it standout
from others - HF start.
?
There are three methods to starting a TIG weld: scratch,
lift, and HF.?
?
Scratch - like old-time stick welding the tungsten is
scratched on the work piece starting the arc.?
Lift - the tungsten is touched to the work piece, there is a
surge in amperage starting the arc.?
HF (high frequency) - a brief (I have my machine set to 1
second) current is passed to the tungsten at a high frequency
which initiates the arc.? This high frequency I believe is in
the 180 - 250 khz range.? The tungsten does not come in contact
with the work piece avoiding any contamination.? This burst of
HF is what was messing with my shop.? Outside of the
cross-spectrum interference that arc welding generates this
little burst in RF makes the welder a little transmitter for a
second.
?
Stick and MIG have no effect on my electronics, and since I
have moved the TIG operation to the other side of the shop all
is well.? Yes, the inverse
square law applies. ?
?
Jeff
|
Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
Well said Buffalo John!
?
As stated, GTAW is no different than any other arc producing operation.? However, there is a feature that makes it standout from others - HF start.
?
There are three methods to starting a TIG weld: scratch, lift, and HF.?
?
Scratch - like old-time stick welding the tungsten is scratched on the work piece starting the arc.?
Lift - the tungsten is touched to the work piece, there is a surge in amperage starting the arc.?
HF (high frequency) - a brief (I have my machine set to 1 second) current is passed to the tungsten at a high frequency which initiates the arc.? This high frequency I believe is in the 180 - 250 khz range.? The tungsten does not come in contact with the work piece avoiding any contamination.? This burst of HF is what was messing with my shop.? Outside of the cross-spectrum interference that arc welding generates this little burst in RF makes the welder a little transmitter for a second.
?
Stick and MIG have no effect on my electronics, and since I have moved the TIG operation to the other side of the shop all is well.? Yes, the inverse square law applies. ?
?
Jeff
|
Re: Digital Electronic Vernier Caliper
Dear All,
Thank you so much for the wide ranging knowledge regarding this subject.
I have mentioned in past replies, the absolutely massive amount of technical knowledge available in this group. It never ceases to amaze me. THANK YOU.
David Williams? From across the Pond, UK Nr. Oxford.
toggle quoted message
Show quoted text
On 10 Dec 2024, at 01:24, Prasad via groups.io <ad_prasad@...> wrote:
?
On Monday, December 9, 2024 at 07:21:36 PM EST, Stan Gammons via groups.io <buttercup11421@...> wrote:
Oh.? Sounds like you might be an amateur radio operator?
Stan
KM4HQE
On 12/9/24 17:59, Prasad via groups.io
wrote:
This brings back some old memories. Soon
after I retired, I set up my hobby shop in the basement and
also my ham radio equipment about 20 feet away from the lathe
and the mini-mill. Soon I added three axis digital scales to
my mill. That setup worked fine until I was not there. I
recall, many times I took a break from machining and went to
operate my radio for a while. When I came back to the
mini-mill I found one or two of the axes displays were
different from what they were before I went away. That
happened eventhough I never exceeded 25 watts power for
transmitting and had excellent SWR and a good Coax cable. I
was confused at first but soon I found out what caused it.
?
I have since moved the radios to my
bedroom and it is now a forgotten problem.?
?
Just reminiscing.
Prasad
Eastern PA, near Philly?
|
Re: Digital Electronic Vernier Caliper
On Monday, December 9, 2024 at 07:21:36 PM EST, Stan Gammons via groups.io <buttercup11421@...> wrote:
Oh.? Sounds like you might be an amateur radio operator?
Stan
KM4HQE
On 12/9/24 17:59, Prasad via groups.io
wrote:
This brings back some old memories. Soon
after I retired, I set up my hobby shop in the basement and
also my ham radio equipment about 20 feet away from the lathe
and the mini-mill. Soon I added three axis digital scales to
my mill. That setup worked fine until I was not there. I
recall, many times I took a break from machining and went to
operate my radio for a while. When I came back to the
mini-mill I found one or two of the axes displays were
different from what they were before I went away. That
happened eventhough I never exceeded 25 watts power for
transmitting and had excellent SWR and a good Coax cable. I
was confused at first but soon I found out what caused it.
?
I have since moved the radios to my
bedroom and it is now a forgotten problem.?
?
Just reminiscing.
Prasad
Eastern PA, near Philly?
|
Re: Damage to electronic devices as raised about Digital Electronic Vernier Calipers.
David - there is no simple Y or N, sorry.
But since you asked -
"Then the TIG Arc causes/releases a large amount of unrefined/uncontrolled
Radio Frequency (RF) signals." Y N Maybe Sort of, it is actually a spectrum Y
"This then swamps and damages any
electronics in the vicinity. Am I correct? Y Maybe Maybe
The power of the TIG arc (welder) and the distance to the piece of
electronic equipment, increases or decreases the risk of damage. Generally Y
Does that mean MIG is not so bad, as it has a sacrificial electrode? N Doesn't matter
Any arc (mig, tig, plasma cutters, arc lamps in theaters, Jacob's ladders, Tesla coils, Neon lights, spark plugs, etc.) will generate electromagnetic radiation. Whether the electrode is consumable or not is immaterial. It is the arc which is formed when the voltage between the electrodes is enough that the electrons on one electrode can jump to the other that causes the radiation.
The strength of electromagnetic field is much higher in some arcs than others.
The sensitivity of the electronic device will vary without any way to quantify.
The error induced in an electronic device might be a simple as a color changing from FFFFFF to FFFEFF (which your eye could not notice) or it might change something where that bit makes a machine instead of moving 0.010mm it thinks the move should be 10.01mm.
When there is excess radiation near an electronic circuit (which is more susceptible than some other things), the radiation can enter the circuit and create voltage levels that make the circuit do unpredictable things. That is the annoying side of the problem. If there is enough radiation that causes the circuit to become unstable then damage might occur. Then the next level is when the radiation is even higher and the circuit is damaged directly by the induced current. Then there is the case of more severe radiation, such as an EMP (electro-magnetic pulse), which generates enough radiation that motors and transformers might see excessive current and become damaged.
On Mon, Dec 9, 2024 at 3:17?PM DAVID WILLIAMS via <d.i.williams= [email protected]> wrote: Dear All,
I know this is partially off the original topic. But the possibility that certain workshop equipment may affect or even damage everyday equipment, viz a flat screen TV etc., seems very important. So I hope you will understand my request, as I have no knowledge of such matters. Thus may I have some detailed advice.?
I am not into Tungsten Inert Gas (TIG) welding, ?(as mentioned, it’s technically called Gas Tungsten Arc Welding, GTAW - thank you for the info.) I only undertake a very limited amount of Metal Inert Gas (MIG) and Gas, plus I did do some ‘old style’ Arc welding some years ago.
So, presumably as it says (TIG) has a non eroding electrode. (Plus an inert consumable rod.)? Then the TIG Arc causes/releases a large amount of unrefined/uncontolled Radio Frequency (RF) signals. This then swamps and damages any electronics in the vicinity. Am I correct?? A simple Y or N will be more than OK, thankyou.
The power of the TIG arc (welder) and the distance to the piece of electronic equipment, increases or decreases the risk of damage. Again correct? ?(Presumably the inverse square law applies. So the manufacturer could(?) give guidance about the risks?)?
Does that mean MIG is not so bad, as it has a sacrificial electrode? Again, I have no idea. Anyone know??
Plus - ?Thanks for the info on the solar storms. Very interesting. (Everyday is a day at school, even when you have seen a lot of Summers.)
Thanks in anticipation,
David Williams (From across the Pond. Nr Oxford.)?
On 9 Dec 2024, at 20:59, mike allen <animal@...> wrote:
?
Welders & flat screen TV's too . I had a bud that spent many
thousand $$ on a Lincoln water cooled TIG welder . First time he
used it took out his fairly new flatscreen TV . Good thing he was
between wife's when that happened .
animal
On 12/9/24 11:24 AM, Bruce J via
wrote:
Well it’s not just welders and LED lights…
" SOLAR STORMS ARE DRIVING FARMERS CRAZY:?Planting
season is a hectic time for farmers. For many, it means
working through the night using GPS-guided tractors to plant
thousands of acres in a short period of time. The season was
in full swing on May 10, 2024, when the biggest solar storm in
decades struck Earth.?
"Our
tractors acted like they were demon possessed," says Elaine
Ramstad, a Spaceweather.com reader and aurora chaser who helps
out on a family farm in Northern Minnesota. "All my cousins
called me during the May 10th storm to tell me that 'my
auroras' were driving them crazy while they were planting.”
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davesmith1800
Johannes
BuffaloJohn