pdp1@EARTHLINK.NET on thu 12 jun 03
Hi Rush,
Golly...
One would not be very sensible to try and cut Steel with any
kind of circular Carbide toothed Blade in a regular Table
Saw whose
arbor speed had not been reduced for the intention. And some
sort of coolant is best as well, as you mention...this was
just more inane mishap it sounds like...
The surface feet per minute for cutting Wood with such a
Blade as is intended for Wood, is likely ten times faster at
least than the surface feet per minute of rim-speed for a
Blade with Carbide teeth as is intended for cutting Steel.
Steel cutting is done at a very much slower RPM.
Almost no table Saws can take a Blade larger than their
intended size...as the casting or surround underneath would
prevent it...
People DO do things like this though...it need not have been
a 'myth', and they do it with blades intended for Wood too,
and at RPMs maybe ten times higher than it should be, and
then feed the maybe 3/18ths Cold-Rolled 'Angle Iron' or the
like, of Steel or something, aggressively into that blade,
and sure...off come all them
'teeth'...like right now, too...Zzzzzzzzzzzzzzip!
And...as you mention...'presence of mind' is so important in
mechanised ( or
other) repeatitive tasks...
You day dream, or think about
'lunch' or memories or something, and your finger or hand
gets bit.
Phil
lasvegas
----- Original Message -----
From: "artimater"
To:
Sent: Thursday, June 12, 2003 12:31 PM
Subject: Re: scary stuff and more risky business
Phil,
The way I heard the story....which means it could be
total bullshit...was from the guy who sharpened my sawbaldes
and sold me new ones and such....I think it was D & R Saw
Supply here in Dallas.....Maybe he was just talking....He
made me think about coolant after that anyway...But it was
on a table saw which would put the guy operating it on a
line with the blade should it come apart....They may have
had a larger blade on the saw than was recommended for
it.....That would have speeded it up at the point of
business...If that is what caused the blade to spew
itself??......The saw man seemed to think it was the
heat....I don't even remember which metal was involved...
It could have been inside the saw biz myth I
suppose....If it was...I believed itHEHEHE....
Now for the poster who infered I might be
stupid.......I am anything but....I tried to explain the
mathematics involved in the situation...I guess I didn't do
a very good job....It has something to do with how many
times I have been hit in the face with shrapnel from a
grinding wheel versus how many times I have had things
ripped out of control on a grinder with my fingers being
used as a clamp....Chances are, I would lose pieces of
fingers long before I lost an eye....I like my
fingers....calculated risk
I also got a email telling how at some school they had
20 instructors and 1000 students and they all had all their
fingers......Well, I hate to say it but they may be
due....The people I know who have lost fingers to machinery
were not demoing the equipment....They were likely putting
in 10 hours a day 6 days a week producing product....with
the bossman breathing on their neck....A little different
situation than making 2 cuts a day and driving the mercedes
home after 4 hours of heavy posing and posturing...and I
guarantee I would rather work alongside a man with 30 years
of prodution experience than in the same room with some guy
who has read all the books and can't find the off
button...."How do you turn this thing on??"....I once ran a
16" chop saw looking thing with which, having no guard of
anykind, I notched 8000 aluminum heat sinks in an 8 hour
day....If I had nodded from boredom I would have had 2 half
heads instead of one....I believe the key to the whole thing
might be the ability to concentrate while dealing with
machines and keeping the meat out of them...
Me stupid?....No you're stupid.....Me stupid?....No you
are stupid....Me stupid?...No you are stupid.......There,
that should save a couple posts on that side threadHEHE....
PAX,
Rush
Taylor!.....Me play catcher?....No way, I played with the
cheerleadersHEHEHE....Also I have never seen safety glasses
that did not obscure vision to some degree....and most
places I thought I needed them, the boss wasn't gonna spring
for new ones just cause the old ones weren't any good....and
for the record I own my own safety glasses and face
shield(not melted by raku fire)
"I only indulge when I've seen a snake, so I keep a supply
of indulgences and snakes handy"
http://artimator.com
rush@artimator.com
http://groups.yahoo.com/group/texasceramics/
Artimator Galleries
2420 Briarwood Ln.
Carrollton, TX 75006
972-841-1857
____________________________________________________________
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artimater on thu 12 jun 03
Phil,
The way I heard the story....which means it could be total =
bullshit...was from the guy who sharpened my sawbaldes and sold me new =
ones and such....I think it was D & R Saw Supply here in =
Dallas.....Maybe he was just talking....He made me think about coolant =
after that anyway...But it was on a table saw which would put the guy =
operating it on a line with the blade should it come apart....They may =
have had a larger blade on the saw than was recommended for it.....That =
would have speeded it up at the point of business...If that is what =
caused the blade to spew itself??......The saw man seemed to think it =
was the heat....I don't even remember which metal was involved...
It could have been inside the saw biz myth I suppose....If it =
was...I believed itHEHEHE....
Now for the poster who infered I might be stupid.......I am =
anything but....I tried to explain the mathematics involved in the =
situation...I guess I didn't do a very good job....It has something to =
do with how many times I have been hit in the face with shrapnel from a =
grinding wheel versus how many times I have had things ripped out of =
control on a grinder with my fingers being used as a clamp....Chances =
are, I would lose pieces of fingers long before I lost an eye....I like =
my fingers....calculated risk
I also got a email telling how at some school they had 20 =
instructors and 1000 students and they all had all their =
fingers......Well, I hate to say it but they may be due....The people I =
know who have lost fingers to machinery were not demoing the =
equipment....They were likely putting in 10 hours a day 6 days a week =
producing product....with the bossman breathing on their neck....A =
little different situation than making 2 cuts a day and driving the =
mercedes home after 4 hours of heavy posing and posturing...and I =
guarantee I would rather work alongside a man with 30 years of prodution =
experience than in the same room with some guy who has read all the =
books and can't find the off button...."How do you turn this thing =
on??"....I once ran a 16" chop saw looking thing with which, having no =
guard of anykind, I notched 8000 aluminum heat sinks in an 8 hour =
day....If I had nodded from boredom I would have had 2 half heads =
instead of one....I believe the key to the whole thing might be the =
ability to concentrate while dealing with machines and keeping the meat =
out of them...
Me stupid?....No you're stupid.....Me stupid?....No you are =
stupid....Me stupid?...No you are stupid.......There, that should save a =
couple posts on that side threadHEHE....
PAX,
Rush
Taylor!.....Me play catcher?....No way, I played with the =
cheerleadersHEHEHE....Also I have never seen safety glasses that did not =
obscure vision to some degree....and most places I thought I needed =
them, the boss wasn't gonna spring for new ones just cause the old ones =
weren't any good....and for the record I own my own safety glasses and =
face shield(not melted by raku fire)
"I only indulge when I've seen a snake, so I keep a supply of =
indulgences and snakes handy"
http://artimator.com
rush@artimator.com
http://groups.yahoo.com/group/texasceramics/
Artimator Galleries
2420 Briarwood Ln.
Carrollton, TX 75006
972-841-1857
| |
|
