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Type: Posts; User: greif1

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1. ## Thread: Prepping aluminum and copper for paint

by greif1
Replies
12
Views
1,063

### Here is a quote from a forum; I am actually an...

Here is a quote from a forum;
I am actually an AC product manager for a large OEM, so I can be of some use on this question.
Being an AC geek, it kills me to think of painting a beautiful aluminum...
2. ## Thread: Computer and network plans for new server

by greif1
Replies
44
Views
2,082

### Remote desktop is pretty quick on a network, so...

Remote desktop is pretty quick on a network, so that should not be an issue;
BUT
The network needs to be clean. Gigabit speed is pretty much the norm now, 10G speed is out there but a bit pricy...
3. ## Thread: Understanding uncertainty and how to report it

by greif1
Replies
8
Views
1,458

### A mostly understandable uncertainty explanation...

A mostly understandable uncertainty explanation can be found here:
An introduction to expressing uncertainty in measurement

A very easy to use spreadsheet with a good example tab can be...

by greif1
Replies
16
Views
2,598

### Never have to worry about EMP or battery problems!

Never have to worry about EMP or battery problems!
5. ## Thread: Check perpendicularity over 6 feet

by greif1
Replies
7
Views
1,554

### If you can measure the resulting cut, a very...

If you can measure the resulting cut, a very sensitive way to check squareness is to make a cut, flip the sheet to the other side and measure again; you will see twice the squareness error.
...
6. ## Thread: Calibration Lab Temp & humidity Standards?

by greif1
Replies
2
Views
1,313

### The general idea is that whatever temperature you...

The general idea is that whatever temperature you maintain, you report the value of that temperature and state if you have compensated the reported value to be at 68F.(or not). In our prep for 17025...
7. ## Thread: Vision system / CMM combo?

by greif1
Replies
19
Views
3,367

### Keyence has a brand new model which has a very...

Keyence has a brand new model which has a very wide field of view and I think does very fancy 3D analysis.
maybe one of these:
Microscopes / 3D Surface Profilers | KEYENCE America
8. ## Thread: universal profile projector USSR

by greif1
Replies
21
Views
4,116

### I used to have a Leitz toolmakers scope with...

I used to have a Leitz toolmakers scope with embedded scales. Measuremets had to be by taking two readings and subtracting the difference between the two.

by greif1
Replies
73
Views
8,544

### re: How do encoder in digital micrometers work. ...

re: How do encoder in digital micrometers work.

They use a rotary encoder instead of linear. So, backlash and accuracy of the screw thread is still an issue.
10. ## Thread: What is proper temperature for a QC lab? ISO requirement? Best practices?

by greif1
Replies
18
Views
3,340

### A couple more things to keep in mind; -If the...

A couple more things to keep in mind;
-If the measuring tool is the same material, and they have reached equal temperature, measurements will be accurate.
-Materials and tools must be the same...
11. ## Thread: What is proper temperature for a QC lab? ISO requirement? Best practices?

by greif1
Replies
18
Views
3,340

### A few thoughts- You mention Delrin; when...

A few thoughts-
You mention Delrin; when measuring this and most plastics, the humidity coefficient of expansion can be ten times more than the thermal, so now you have something new to worry about....
12. ## Thread: Laser engravers..........what's out there?

by greif1
Replies
32
Views
3,555

### A CO-2 laser likes organic materials to mark. It...

A CO-2 laser likes organic materials to mark. It reflects too much to mark metals. An outfit called Full Spectrum Laser ( Full Spectrum Laser | Lasers for Cutting and Engraving) has an interesting...
13. ## Thread: OT- Any way to stop junk calls on a cell phone ?

by greif1
Replies
63
Views
3,690

### Here is a real solution (for cell phones at...

Here is a real solution (for cell phones at least): call blockers

The 7 Best Call Blocker Apps For Smartphones

On my Android phone I use an app named "Should I answer" which is a crowd...

by greif1
Replies
32
Views
16,403

### I seem to remember that 30 or more years ago...

I seem to remember that 30 or more years ago Starrett used to refer to all its oils ad "M-1", even though the spray stuff was not the same as "Tool and Instrument Oil"

I have been told that...
15. ## Thread: Vision CMM Calibration

by greif1
Replies
4
Views
1,005

### Most straightforward for the x-y plane is a glass...

Most straightforward for the x-y plane is a glass grid with calibrated points. Mitutoyo has am accredited calibration center that can calibrate these. This can check x,y, and angular accuracy all at...
16. ## Thread: stone for cleaning burrs from gage blocks

by greif1
Replies
61
Views
7,690

### Webber gage blocks has this to say: Stoning...

Webber gage blocks has this to say:

Stoning Gage Blocks

Webber makes several gage block stones, shown in this brochure,on page 478

http://www.jwdonchin.com/Starrett/Catalog/pdf/445.pdf
Part...

by greif1
Replies
8
Views
1,503

### Optical flats are made to test flatness by being...

Optical flats are made to test flatness by being in contact with an object. Unless it is made specifically for testing micrometer face parallelism (like the Mitutoyo set made for that) it is unlikely...
18. ## Thread: Lempco ball bearing die set/die shoes for sale

by greif1
Replies
0
Views
544

### Lempco ball bearing die set/die shoes for sale

Danly, Producto, style die shoe dieset, Lempco Ball Bearing 5"x 7.5" table | eBay

Danly style die shoe dieset, Lempco Ball Bearing , 11 x 7.5 " (wxL) overall

Lempco All...
19. ## Thread: Optical Comparator for Home Office Suggestions ?

by greif1
Replies
23
Views
3,421

### The offset cross-hair lines are so you can see...

The offset cross-hair lines are so you can see the edge exposed from one side and the edge coming up to the line on the other side. It helps make more repeatable readings because the judgement of...
20. ## Thread: Need Good / Inexpensive CMM Fixturing/Work Holder Kit

by greif1
Replies
7
Views
1,101

### Thorlabs makes very nice stuff for use on optical...

Thorlabs makes very nice stuff for use on optical tables, quite a bit cheaper than the other optical type vendors. They have a huge selection (paper catalog is ~4 inches thick!). Thorlabs also sends...
21. ## Thread: Double-Strike Issue on Coin Stamping Drop Hammer

by greif1
Replies
46
Views
5,080

### Maybe add a pawl to the arm so that on first...

Maybe add a pawl to the arm so that on first travel down it passes smoothly, but the bounce up ratchets it so that on the way down the second time it stops. Going up from this position would then...
22. ## Thread: Books on metrology

by greif1
Replies
14
Views
3,183

### Moore Special Tool had a series of books which...

Moore Special Tool had a series of books which show some extremes of metrology.

This is a PDF of the actual book!...
23. ## Thread: Boeckeler Model #9598

by greif1
Replies
2
Views
1,219

### Be very careful not to scratch the encoder disc...

Be very careful not to scratch the encoder disc (which is photo film).
Yes, disassembly is a pain!
24. ## Thread: MIL-STD-130 Approved Lacquer

by greif1
Replies
3
Views
1,001

### Mil spec ink from here: Government...

Mil spec ink from here: Government Specifications - ACMI Epoxy Ink

Clear coats:
Military Topcoats, MIL-PRF-85285 | Creative Coatings Co

by greif1
Replies
46
Views
7,098