Thread: What did you learn today?

Originally Posted by Pete F

ha ha. The machining equivalent of talking out one's clacker; as long as it's said with a confident tone people will believe it.

Software development - that's not a bug, that's a feature (with side effects, generally bad).

PDW

Dial bore gauges read backwards. (I just bought some and hadn't used them before.) So I made a bush OD 44.48 instead of 44.52.
I might get away with loctite, but I think I will make the part again for penance.

I have recently found out that changing welding sticks bear foot with the ground attached to a poll going into a ditch is a bad idea, 48volt through the system later and to this day I will not change a welding stick.

ouch.
Can relate to that sensation.... the old farm welder has had a handpiece upgrade as there used to be a screw that would come loose just enough to touch my wrist. Holding the grounded job with the other hand lead to some expressions of surprise.


The new handpiece was a great investment.

French drivers tail gate, don't obey any posted speed limit, do not pull over to allow emergency vehicles to pass and don't indicate when passing.
The food is tops though.

DD

I learned today that the letter "M" as in M16x2 doesn't stand for metric.... you live and learn... I leave it as an exercise for those with a copy of machinery's handbook to discover more...

Regards
Ray

Originally Posted by RayG

I learned today that the letter "M" as in M16x2 doesn't stand for metric.... you live and learn... I leave it as an exercise for those with a copy of machinery's handbook to discover more...

Regards
Ray

I learnt not having a copy of the machinery's handbook leads to a patient wait for enlightenment on tricky technical questions such as these .......

I patiently await some kind soul putting me out of my misery

Originally Posted by HavinaGo

I learnt not having a copy of the machinery's handbook leads to a patient wait for enlightenment on tricky technical questions such as these .......

I patiently await some kind soul putting me out of my misery

American M Profile - defined in ANSI Standard B1.13M-2005 and essentially interchangeable with the ISO standard.

I was told some years ago that pepper makes a good first aid tool, and it stops bleeding. I never really believed it, but, yesterday I learnt that it is true, I cut my hand in a spot where a bandaid wouldn't work. I was bleeding like mad, no amount of paper towel seemed to stop it. I spotted the pepper shaker on the shelf and in desperation ground some on the cut.......bleeding stopped almost instantly. Handy thing to know I think!

As for welding, I was helping weld some frames up years ago. My boss was cursing at the welder cause he couldn't strike an arc. Of course he tried before I had the clamp on, here was me with the clamp in one hand and holding the frame in the other.....

Cheers,
Ew

Originally Posted by Gavin Newman

American M Profile - defined in ANSI Standard B1.13M-2005 and essentially interchangeable with the ISO standard.

Thanks Gavin.. nicely concise and of course correct.. M does in fact stand for "Metric" but not Metric dimensions, rather it's the Metric Profile..

Regards
Ray

Originally Posted by Ueee

I was told some years ago that pepper makes a good first aid tool, and it stops bleeding. I never really believed it, but, yesterday I learnt that it is true, I cut my hand in a spot where a bandaid wouldn't work. I was bleeding like mad, no amount of paper towel seemed to stop it. I spotted the pepper shaker on the shelf and in desperation ground some on the cut.......bleeding stopped almost instantly. Handy thing to know I think!

As for welding, I was helping weld some frames up years ago. My boss was cursing at the welder cause he couldn't strike an arc. Of course he tried before I had the clamp on, here was me with the clamp in one hand and holding the frame in the other.....

Cheers,
Ew

There was a completed circuit. Dunno what the problem was. Some people just have a high resistance to new ideas lol.

Pepper can also be used to plug up a leak in a car radiator. Is this the same?

Dean

Originally Posted by Oldneweng

There was a completed circuit. Dunno what the problem was. Some people just have a high resistance to new ideas lol.;
Dean

it is good to start this day with a spark.

Originally Posted by RayG

Thanks Gavin.. nicely concise and of course correct.. M does in fact stand for "Metric" but not Metric dimensions, rather it's the Metric Profile..

Regards
Ray

Metric profile,whats that then? Does in refer to the different thread angle profile from Imperial measured bolts or is this something else?

Well that is certainly confusing, and while I am not intending to start an argument, the statement is seemingly different to what Fastenal, the bolt manufacturing company say in print.
A cut and paste from their site follows --

"Metric Thread
The metric screw thread is identified by the capital letter M, followed by the nominal diameter. Metric
threads are measured by the distance between two adjacent threads in millimeters (pitch).

Threads on a standard (inch based) fastener are measured by counting the number of threads per inch."

Apart from that, lots of other good metric bolt specification info is there also.

http://www.fastenal.com/content/feds...ifications.pdf


I for one am happy to stick with Fastenal's system -as they say- It works for me.

Grahame

Originally Posted by Grahame Collins

Metric profile,whats that then? Does in refer to the different thread angle profile from Imperial measured bolts or is this something else?

Well that is certainly confusing, and while I am not intending to start an argument, the statement is seemingly different to what Fastenal, the bolt manufacturing company say in print.
A cut and paste from their site follows --

"Metric Thread
The metric screw thread is identified by the capital letter M, followed by the nominal diameter. Metric
threads are measured by the distance between two adjacent threads in millimeters (pitch).

Threads on a standard (inch based) fastener are measured by counting the number of threads per inch."

Apart from that, lots of other good metric bolt specification info is there also.

http://www.fastenal.com/content/feds...ifications.pdf


I for one am happy to stick with Fastenal's system -as they say- It works for me.

Grahame

Nothing wrong with Fastenal's description... and it's not incompatible with the description given in Machinery's Handbook.. it's just called the M profile, and there's an ISO standard if you google for "M thread profile" you should find it. There are lots of other metric profiles, MJ, S, etc..

Regards
Ray

yesterday I learned to duck, when the chuck let go of the piece of wood I was turning. Pity I wasn't quick enough. No damage done (it hit me in the head, what damage could it do ). Always a problem when turning timber that's a little "punky"