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Re: File /5)Charts_&_Tables/HARDNESSTESTER Hardness (3) (1).pdf uploaded
#file-notice
Here the one I purchased in 1970¡¯s from Rutland Tool supplies?
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Rockwell test disk
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Spare bag of ballsnever open |
Cross slide EXSTENSION feed no mill
Here photos of my cross feed exstension.??
I polished by using the threading die chuck die in the lathe chuck. Then screw thread in the tailstock.? Put the on slow and ran the die over the thread over the threads about 5 or 6 times.?
The last photos of the nut on cross slide is from the internet I did not to disable my lathe.
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Dave?
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Re: How it works
Dave, This drawing is very blurry because the resolution is so low, only 488 pixels wide.? It should be at least 1024 wide.? Unless somehow you're reducing the resolution before emailing, you should be able to get an improvement by setting this drawing to be a true attachment, not inline as you have done this time. Recently you attached a PDF which fixed a similar problem.? I'd like to see what happens if you try the true attachment method, though. I'm a moderator of one or two of your other machining groups, amd have several groups.io of my own, so I have experience with this kind of thing.? Email me direct if you want. Hank ____________________________________________________
On Monday, February 24, 2025 at 03:12:16 AM EST, Dave wrote:
This what looking at to build?
What do you think? |
Re: How it works
The best I seen.?
More into land I get with 20 seconds on ground or 2,000 feet.
I never tried on ocean only by reading?
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Dave?
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On Sat, Feb 22, 2025 at 11:13 PM, Jerry Durand wrote:
I have yet to get any Flat Earth people explain to me how a sextant works on their version of the disc Earth.? Do you sight on the sun, or the turtle, or the elephants?? The best I can get from them is all science is just a big conspiracy thousands of years old. |
Re: How it works
¿ªÔÆÌåÓýI have yet to get any Flat Earth people explain to me how a sextant works on their version of the disc Earth.? Do you sight on the sun, or the turtle, or the elephants?? The best I can get from them is all science is just a big conspiracy thousands of years old.On 23-Feb-25 9:44, davesmith1800 wrote:
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Re: File /5)Charts_&_Tables/HARDNESSTESTER Hardness (3) (1).pdf uploaded
#file-notice
FYI? Background?
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I had check class 45 cast iron and would not fit in Rockwell tester.
Rutland had a unit for none destruction testing I purchased and very simple . A 3/16 ball from ball bearings. And a clear tube . It work but easy to lose the small ball so I up size so easier to find the ball. Then used a paint stick good and bad marks . Now my crew could check the hardness too. They set wheel on floor and drop ball. In time a rug around the wheel stop ball from hiding . The pickup ball and check next wheel. We did not check every wheel just in in each batch.
Then when looking materials it came handy too.
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Dave
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FYI I still have the test disk from Rockwell hardness test I think last for ever |
Re: File /5)Charts_&_Tables/HARDNESSTESTER Hardness (3) (1).pdf uploaded
#file-notice
Photo 1 of 3 different harness charts just uploaded?
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File /5)Charts_&_Tables/HARDNESSTESTER Hardness (3) (1).pdf uploaded
#file-notice
Group Notification
The following items have been added to the Files area of the [email protected] group. By: davesmith1800 <davesmith1@...> Description: |
Re: Build ideas in Navigation & History
It fun picking a time era for building .
Most pick the the slot from 1820's to to 1950¡¯s and mostly engines and sundials.??
There a hole world full fun ideas for build .
There who build using too of era.? I like today's tools. Myself I am looking at navigation in the1700's.?
Using today's tools and materials keeping simple easy to build?
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Dave? |
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