Archived from groups: rec.games.pinball (
More info?)
Oh yea, here's some info for your dumbass canadian glass man.
since he seems to be a blithering idiot about glass.
Tempered glass is SIX TIMES the strength of plate glass.
Below is how it actually works. Apparently reading for
canadian glass men who have been "in the business for
40 years", is purely optional.
----
Toughened glass (aka tempered glass) is made from annealed
glass via a thermal tempering process. The glass is cut to
the required size and any required processing (such as
polishing the edges or drilling holes in the glass)
is carried out before the toughening process starts.
The glass is placed onto a roller table, taking it through
a furnace which heats it to above its annealing point of
600 °C. The glass is then rapidly cooled with forced draughts
of air. This rapidly cools the glass surface below its
annealing point, causing it to harden and contract, while
the inner portion of the glass remains free to flow for a
short time. The final contraction of the inner layer
induces compressive stresses in the surface of the glass
balanced by tensile stresses in the body of the glass.
The pattern of cooling can be revealed by observing the
glass with polarized light.
Toughened glass is typically 6 times (six times) the
strength of annealed glass. This is because any surface
flaws tend to be pressed closed by the retained compressive
forces, while the core layer remains relatively free of
the defects which could cause a crack to begin.
However, this strength comes with a penalty. Due to the
balanced stresses in the glass, any damage to the glass
edges will result in the glass shattering into thumbnail
sized pieces. This is why the glass must be cut to size
before toughening and cannot be re-worked once toughened.
Also, ironically, the toughened glass surface is not as
hard as annealed glass and is more susceptible to scratching.
Toughened glass is typically used in unframed assemblies
such as frameless doors and in structurally loaded applications.
Toughened glass is considered a safety glass due to its
increased strength and its tendency to shatter in small,
rounded pieces which are less likely to cause injury.
--------------------------
c...@provide.net wrote:
> I love these people that think plate glass is a good thing
> because it doesn't break into lots of little harmless pieces.
> it gives me a good forum to vent and makes them look, well, dumb.
> Yes you are LAZY and obviously not too bright if you think
> plate glass is the proper thing for a pinball machine. Proper
> spelling is "vacuum" by the way. Not that i'm a good speller,
> but it just shows something about your post.
>
> It takes maybe 10 minutes to vacuum tempered glass.
> It takes ALL FREAKIN DAY at the local emergency room while
> they remove a big shard of glass from your dumb ass and
> sew you back up! DUH. So you can spend you time "better"
> cleaning up BLOOD instead of glass.
>
> If you are careful, tempered glass should never break.
> it is edge sensitive, so setting it on edge on a concrete
> floor is dangerous. Use a piece of carpet or a towel.
> also warm hands on very cold glass can cause tempered
> to break.
>
> I can STAND or SIT on a tempered pinball glass without
> breakage. I can LEAN on plate glass and break that into
> huge dangerous cutting flesh bloody SHARDS of glass.
> But hey if you like YOUR BLOOD all over everything,
> and think it's easier to clean up FLESH and blood than
> little pieces of harmless glass, well it shows how
> smart you really are.
>
> I'm about 20 pounds overweight by the way. Not bad, and
> i am working on that. i was 30 pounds over, but i'm lost
> a bit.
>
> Roadrunner000 wrote:
> > I resent your lazy comment dumbass. I suspect your probably fat and
> > overweight, but feel the need to push off your guilt by criticizing
> > others with your rude comments. I offered an opinion only.
> > Constructive criticism is always welcome, but not your rude comments
> > Idiots like you are certainly welcome to spend time with your shop vac
> > or whatever vacume you find useful for fullfiling your other sexual
> > needs to waste time vacuming up thousands of pieces of tempered glass.
> > I could care less. Preventing wasted time in cleanup is a smart
> > thing..not being lazy. Unlike you, I have better things to do with my
> > time. I suspect you eat the chicklets of glass instead of actually
> > throwing them away. When I'm done tipping over the vending machine I
> > will send the beer to wash down all those chicklets you enjoy eating.
> > I'm no glass expert, but the guy who told me about the glass has been
> > in the business for over 40 years so I will take his advice over yours.
> > Plus he gives me BIG discount! I guess that means I'm not only lazy,
> > but cheap too huh?
hfci19d43e9fu9veju0a50rva16n8964m@4ax.com...
Facebook
Twitter
Instagram