Marking sheetmetal

RST Engineering wrote:
"Don W" wrote in message
. ..

RST Engineering wrote:

Depends entirely on what tolerance you are marking/cutting/bending to. I
want my students to be able to cut/bend to ten thousandths accurately and
the only way to do that is to scribe.

If you can bend aluminum to a 1/10,000" tolerance you are the MAN. You
must have some really talented students.


That's not the English of it. Ten thousandths is far different from one ten
thousandth. Ten of the little thousandths rather than one of the tenth part
of a thousandth. 0.010 as opposed to 0.0001. Two orders of magnitude
difference. Get it?

yeah, I got it the first time. Just having a
little fun with you. Was it good for you too?

That's why some people call it ten mils, or .010",
or... sometimes ten one thousands of an inch, etc.


Don W.

"Don W" wrote in message ...
: RST Engineering wrote:
: "Don W" wrote in message
: . ..
:
: RST Engineering wrote:
:
: Depends entirely on what tolerance you are marking/cutting/bending to. I
: want my students to be able to cut/bend to ten thousandths accurately and
: the only way to do that is to scribe.
:
: If you can bend aluminum to a 1/10,000" tolerance you are the MAN. You
: must have some really talented students.
:
:
: That's not the English of it. Ten thousandths is far different from one ten
: thousandth. Ten of the little thousandths rather than one of the tenth part
: of a thousandth. 0.010 as opposed to 0.0001. Two orders of magnitude
: difference. Get it?
:
: yeah, I got it the first time. Just having a
: little fun with you. Was it good for you too?
:
: That's why some people call it ten mils, or .010",
: or... sometimes ten one thousands of an inch, etc.
:
:
: Don W.
:

How about 1 hundredth of an inch?

".Blueskies." wrote in message
m...

How about 1 hundredth of an inch?


That was my thought when I read the whole silly thread. The problem is that
hundreths are not a "popular" dimension. It seems that in popular notation
the instant you segment an inch you are dealing in thou. So, asking someone
to remain within "ten thou" is instantly understood by almost anyone. By the
time you go the nest step and get into tenths people usually revert to
fractions and start dealing in /32s or /16s.

In any case stay away from pencils, I'm not that careful with a scribe, and
sharpies are common. I've got two sitting on my desk.