I'm bullish on screw threads

[Ptah]

I can't decide if coarse screw threads

http://shopswarf.orcon.net.nz/unc.html

or extra fine screw threads

http://shopswarf.orcon.net.nz/unef.html

are my favorite

But I do know how to measure

[lizziegrace]

1. Oh screw it

extra-fine threads. ;)

[Ptah]

3. You do know there are male and female threads, don't you?

[lizziegrace]

4. Yes I do

;)






How was your daughter's birthday? :hug:

[Ptah]

8. Her birthday was pretty good. She told me she loves me too.

I made some chicken flavored with, among other spices,
some of the jalepenos from the garden where the sunflowers used to live.

[lizziegrace]

9. That's all that matters

she loves you. :hug:

[Haole Girl]

2. LOL

Great copycat. And, thanks, by the way. That other one was getting a bit hot! ;-)

[Ptah]

5. Get this: Fred HOLDER uses WOOD:

[Haole Girl]

6. I'm seeing some things in that photo I shouldn't be seeing.

I need professional mental help! :crazy:

[Ptah]

11. The screw thread is suprisingly simple.

[bridgit]

7. ah, the screwpump properly applied...

http://en.wikipedia.org/wiki/Archimedes'_screw :headbang:

[Ptah]

10. I sometimes like to inspect screw threads.

Prorer alignment is everything

[bridgit]

12. don'cha have to, especially the starter thread...

:thumbsup:

[petronius]

13. Geez - I always thought screws were just simple metal

corkscrewy things - I didn't know they had names for all the parts and special angles and stuff...

(Getting metaphysical for a moment: it's a cool feeling when something apparently simple opens up and has unexpected complexity - it's like opening a window you didn't know was there...)

[Ptah]

14. It repeats throughout the mechanical components we encounter.

Here is an illustration showing proper measurement of a screw thread.




The neat thing is the micrometer that is used to measure the
screw thread uses a precision screw thread to determine the dimension

And the machines that make screw threads are filled with,
you guessed it, screw threads.

Kinda like fractals.

[petronius]

15. Fractals was what I was thinking of:

A simple thing turns out to have a lot of complexity, and all the simple elements that make up the complexity turn out to have their own internal complications. The world is a very cool place...