Opps sorry I thought the cylinder went all the way down ? to a 3J chuck? However I still found it very interesting. And will be of use to be.? Thank you?
David of Abingdon. Uk
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On 24 Dec 2023, at 00:15, DAVID WILLIAMS via groups.io <d.i.williams@...> wrote:
? Thank you very much for the idea. [ Easier to set up than a four jaw chuck if you have no virtually no experience of same. Equally - Easy for those who have I4J skill. ]?
David of Abingdon, UK?
On 23 Dec 2023, at 22:35, davesmith1800 <davesmith1@...> wrote:
?Need to put a square shaft in steady rest.? Photo only
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Thank you very much for the idea. [ Easier to set up than a four jaw chuck if you have no virtually no experience of same. Equally - Easy for those who have I4J skill. ]?
David of Abingdon, UK?
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On 23 Dec 2023, at 22:35, davesmith1800 <davesmith1@...> wrote:
?Need to put a square shaft in steady rest.? Photo only
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Re: Are DROs worth the money/trouble
Dave, ? It all comes down to how long and how much one uses the unit.? (Fortunately, time is the same unit in both systems, and a second in imperial is the same as a second in metric.)? For single units of length and mass (volume can be derived from mass or length), I can work equally well in both imperial and metric because I’ve used both since I was a child and ?have a pretty good idea of inches, pounds, and pints, as well as of meters, kilograms, and liters. ?What gives me headaches are combined or derived units, such as those for speed or pressure.? I’ve had a whole lifetime to learn how fast some number of miles per hour is by looking at a car’s speedometer, but the metric equivalent has only recently showed up on speedometers.? I also know that my car’s tire pressure is about 30 pounds per square inch, but have no clue when I see pressure expressed in kilograms per square meter or better yet in newtons per square meter or in pascals.? ? ? Jerry F. ?
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From: [email protected] [mailto:[email protected]] On Behalf Of davesmith1800
Sent: Saturday, December 23, 2023 12:21 PM
To: [email protected]
Subject: Re: [7x12MiniLathe] Are DROs worth the money/trouble? It is only for watching TV.
When get down to the real world then calculations?
FYI If you see temperature of 50°C it is HOT ? and 20°C not to bad of day.
Dave? Gerald Feldman 2:51am? ?
Dave,
?
I’m sure you know it doesn’t work that way! Reality is reality. We have enough trouble trying to get kids to understand the actual conversion so this would really mess them up and confuse them.? ?
Jerry F.
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Re: Are DROs worth the money/trouble
MY wife once added up all the receipts for a free motorcycle I
had . Yep ya guessed it, it wasn't so free .I think I can finally
say at this stage of my life that really do not need any more
mechanic tools . Machine tools , horse of a different color .
animal
On 12/23/23 2:36 PM, Bruce J wrote:
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LOL, a friend ( I think he was 17 at the time) couldn’t believe
his luck when he chanced on an old Rolls Royce for sale cheap (bc
it needed engine work and weirdly RR mechanics were kind of rare
in 1962 Prescott AZ :-), then he realized that he’d spend more in
new tools to work on it than he did the car.
In the end of the 1950s, my parents gave me a
Snap-On socket set as a Christmas present,
in UK Whitworth?so that I could
work on my 1955 Austin Healey.
I learned to deal with it then - just another measurement
system...
If you are restoring an old English car or motorcycle,
you'll need them...
ralphie
ralphie
--?
Bruce Johnson
"Wherever you go, there you are." B.
Banzai, PhD
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Re: Are DROs worth the money/trouble
Any you work on UK the pipe threads are different like ? pipe is 28 tpi and America is 27 tpi.. There are other differences in threads too. When the UK when metric it was lot easier to work on.
Dave?
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Re: Are DROs worth the money/trouble
LOL, a friend ( I think he was 17 at the time) couldn’t believe his luck when he chanced on an old Rolls Royce for sale cheap (bc it needed engine work and weirdly RR mechanics were kind of rare in 1962 Prescott AZ :-), then he realized that he’d spend more in new tools to work on it than he did the car.
In the end of the 1950s, my parents gave me a Snap-On socket set as a Christmas present,
in UK Whitworth?so that I could work on my 1955 Austin Healey.
I learned to deal with it then - just another measurement system...
If you are restoring an old English car or motorcycle, you'll need them...
ralphie
ralphie
--? Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
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Need to put a square shaft in steady rest.? Photo only 
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Re: Are DROs worth the money/trouble
Where rule of thumb ? would have help.
In 1980 there Canada airline need fuel ? in America.? The convert what to gallons needing10,000 gal.?
The had a haywire fuel gauge so got make to Canada to get fix ok by FAA.
It was day they switch from gallons to liters. No one new Liters so gust it was about same and fill with 10,000 liters of fuel and check the fuel? gauges it wad full.?
The airline ran short now the had a 737 guider. Good news the pilot was guider pilot too. They a drag racing and landed?
Now it is test for pilots
Rule of thumb 4 liters to a gallon
Dave
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Re: Are DROs worth the money/trouble
It is only for watching TV.
When get down to the real world then calculations?
FYI If you see temperature of 50°C it is HOT ? and 20°C not to bad of day.
Dave?
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Gerald Feldman
2:51am? ?
Dave,
?
I’m sure you know it doesn’t work that way! Reality is reality. We have enough trouble trying to get kids to understand the actual conversion so this would really mess them up and confuse them.? ?
Jerry F.
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Re: Are DROs worth the money/trouble
In the end of the 1950s, my parents gave me a Snap-On socket set as a Christmas present,
in UK Whitworth?so that I could work on my 1955 Austin Healey.
I learned to deal with it then - just another measurement system...
If you are restoring an old English car or motorcycle, you'll need them...
ralphie
ralphie
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Re: Are DROs worth the money/trouble
A rule of thumb for monkey marks.?
A metric is about one yard.
A KM is about 0.6 mile
A Liter is about qt?
A KG is about 2.2 pounds
This is close just helps watching TV?
Dave?
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Re: Are DROs worth the money/trouble
The last vestige of Official ‘metrification' of the US is right in my backyard??
(One of my wife’s specialists has offices off I-19 so we drive that road once a month)
Thomas Jefferson was a strong proponent of a decimalized system, which is why the US has it’s money as 100 cents to a dollar, etc, and the rest of our measurements might well have followed the French metric system…if it weren’t for pirates
?
When I was in high school had one hour? of? everyone got the first class it base on 10. The hard part for some 100°C was very hot.? Gas prices in metric is a lot better. One? Liter about ? gal looks a lot better at pump.? Dave?
_._,_._,_
--? Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
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Re: Are DROs worth the money/trouble
Try buying 5,000 12mm 1.25 bolts in 1976. You could only buy a standard tap.?
Today is not problem .
Even in 1993 to buy a 25 mm shaft you goto machine shop and have turn to get 25mm shaft.
I did get my first metric socket in 1960's?
I did try switching but you just could not buy what need to convert at same price.?
Switching if start in metric is easy . You buy a metric lathe , mill and set metric mics.?
If you inch have all tools it cheaper to stay inch and covert.?
It is just number go cheapest way.?
When I was in high school had one hour? of? everyone got the first class it base on 10. The hard part for some 100°C was very hot.?
Gas prices in metric is a lot better.
One? Liter about ? gal looks a lot better at pump.?
Thank God for DRO'S just a button and back to normal.?
Dave
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Re: Are DROs worth the money/trouble
EZ View are not worth the money: the aluminum scales are not robust and between them and the poor readers & displays you will not be happy. Virtually all of the issues people have had with TouchDRO and iGaging scales is that they were using the EZ View, not the SS Absolute Plus scales.
The SS Absolute system by itself will give you reliable positions and the ability to set absolute & incremental origins, but that's about it. the additional $160+/- for TouchDRO & tablet gives you a fully functioning DRO system. Glass scales will give you more precision, accuracy and repeatability, but are at least an order of magnitude better than a 7x lathe (plus, cutting glass scales to length is not an easy process and the read head/scale alignment is more critical that with the iGaging SS scales).
I have iGaging SS Absolute Plus on both my Mini-Mill & Mini-Lathe with TouchDRO adapters. I have never had any issues with the systems or installations and would do it the same again. The Jan/Feb 2024 issue of HSM?with my Article is still not online, but it should be soon (I just copy my regular subscription issue in the mail yesterday). However, the Jul/Aug & Nov/Dec 2022 issues with my Mill installation are .
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Re: Are DROs worth the money/trouble
I'm not sure I've concluded anything.
I guess there are seven options.
1) Do nothing. Use the existing dials and measure the part as I go.
2) Get some magnetic dial indicators or bases and use those
3) Modify/repurpose some inexpensive calipers as linear scales
4) EZ View DRO
5) Igaging absolute
6) TouchDRO with igaging scales
7) TouchDRO with glass scales
1 is free
2 I can probably do with my existing indicators. Maybe get a magnetic base. Be nice to have a long travel indicator
3 can get plastic calipers as low as $8 and stainless for about $20. Big issue for me is the auto shutoff most have - I'm pretty deliberate and don't need the scale losing it's position while I'm thinking
4 $130 for all three axes. $150 with an AC power supply. Hard to beat.
5 About $300 for all three axes
6 $140 or $300 + $100 for box and $60 for tablet so $300 or $450
7 Glass scales are about $100 each so again, about $450
Really with DROs, looking at
$130-150 for the EZ View
$300+ for the Absolute or Touch DRO with EZ View scales
$450 for Touch DRO with glass scales or Touch DRO with Absolute scales
Another way to look at it - what's it cost to try out on one axis.
6" EZ View is just over $30
6" EZ View Absolute is around $70
Antyhing with Touchdro is going to be $100/$150 for the box plus $60 for the tablet plus one scale at $30/$70/$100. Let's just say $300 to try it out.
I'm leaning towards just geting a $30 6" EZ View to see if I like it.
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On Saturday, December 23rd, 2023 at 12:16 AM, fxkl47BF via groups.io <fxkl47BF@...> wrote:
On Thu, 21 Dec 2023, chrisser via groups.io wrote:
I've been looking at DROs again. Seems I go through this exercise every six months or so.
Wanted to bounce off the conclusion I always seem to come to and see if you guys have a different opinion.
so mr chrisser
what is your conclusion
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Re: Are DROs worth the money/trouble
On Fri, 22 Dec 2023, davesmith1800 wrote: Try this I have work with design using ball bearing.? I quickly noticed metric ball bearing dating back to 1930s was right size to machine off a little inch bar stock.
Before 1960 they change the inch to comfort to metric or 25.4. So have a old machine tool or mic Before 1960 it is on a different standard. It actually happened during WWII, prior to that there were many different places doing conversions around 25.4mm to the inch, but during WWII they had one company making the gauge blocks for everyone so that parts would be interchangable. That company used 25.4mm/in the official standarization years later was really just recognizing and putting the official blessing on the status quo David Lang
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Re: Are DROs worth the money/trouble
Dave, ? I’m sure you know it doesn’t work that way!? Reality is reality.? We have enough trouble trying to get kids to understand the actual conversion so this would really mess them up and confuse them.? ? ? Jerry F. ?
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From: [email protected] [mailto:[email protected]] On Behalf Of davesmith1800
Sent: Friday, December 22, 2023 9:19 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] Are DROs worth the money/trouble? [Edited Message Follows] The problem with metric is did not make a easy to use metric one inch or cup.?
If fix that problem ever one would go metric.?
You temp C can fix by just double the number and calling something else.?
Everyone likes 32? to 100 in metric it is 0 to 50 with ? °C just double the number so it is 0 to 100 and 200 is boiling.?
Dave?
? Hi Charles. When I did my engineering qualification at school, that was using Imperial measurement. Then started an Indentured apprenticeship with a Dutch company, so learnt metric, however, college was still Imperial. So I can get it wrong in both systems?? ?????? ????Ellis (UK)
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Re: Are DROs worth the money/trouble
I would hope so.? I took chemistry and physics in high school 60 years ago and we used the metric system.? I taught a medical electronics class in junior college about 40 years ago, and spent a week or so teaching the metric system to those students. ? Jerry F.? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of John Mattis
Sent: Friday, December 22, 2023 9:20 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] Are DROs worth the money/trouble? Yes, but everything worldwide is made using metric measurements. 99/5% of the world population is educated using metric. The U.S. military uses metric. My cousin's daughter teaches high school chemistry?and says she spend 2-weeks teaching metric at the start of the school year. The United States is being really stupid in not changing?to metric. We started to change to metric but Regan killed the effort. Sorry for the minor political comment. John Mattis (retired mechanical?engineer) ? We will be dealing with Imperial system for hundreds of years.?
The Imperial?system is still in use in the UK in some places Less in Canada?
Most ball bearing are in metric?
As long ss I have a calculator metrics is easy.? Just remember 25.4 and life is easy.? I do not have any metric mics.?
The best way for machine work is match the mic to the lathe or mill so dials read the same.?
I just got my first metric lathe in November.?
Dave?
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Re: Are DROs worth the money/trouble
Can be a pain to work some older homes with real 2x4 new do not fit right.?
I also run cross 1? x 3? too.?
I do not just live or else where.?
Dave?
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Re: Are DROs worth the money/trouble
On Thu, 21 Dec 2023, chrisser via groups.io wrote:
I've been looking at DROs again.? Seems I go through this exercise every six months or so.
Wanted to bounce off the conclusion I always seem to come to and see if you guys have a different opinion.
so mr chrisser what is your conclusion
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davesmith1800
Ralph Lehotsky
chrisser