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Best way to cut glass?? hr(bob) hofmann@att.net 04-11-2008
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Posted by Pete C. on April 11, 2008, 5:51 pm

charlie wrote:
>
> wrote:
> >
> >
> > > I've heard about scoring the glass on only one side and scoring it on
> > > both sides as the preferred way to cut/break glass. I've done it both
> > > ways. Anyone got any real insight into this matter????
> >
> > > H. R.(Bob) Hofmann
> >
> > score it on one side. break apart by pulling down on each side of the cut
> > with the cut on the top surface, or break on a sharp edged tabletop if the
> > piece of glass is large and the part you're cutting off is not small.
>
> Any comments on scoring 1 side vs both sides before breaking??

Probably only applicable to laminated safety glass which also requires
careful torch application for the plastic layer.

Posted by hr(bob) hofmann@att.net on April 11, 2008, 5:27 pm
wrote:
> wrote:
>
>

>
> > > I've heard about scoring the glass on only one side and scoring it on
> > > both sides as the preferred way to cut/break glass. =A0I've done it bo=
th
> > > ways. Anyone got any real insight into this matter????
>
> > > H. R.(Bob) Hofmann
>
> > score it on one side. break apart by pulling down on each side of the cu=
t
> > with the cut on the top surface, or break on a sharp edged tabletop if t=
he
> > piece of glass is large and the part you're cutting off is not small.
>
> Any comments on scoring 1 side vs both sides before breaking??

I should add that this particular piece of glass I am going to cut is
double thickness from an old storm door. I know that the glass is NOT
tempered.

Posted by charlie on April 11, 2008, 5:32 pm

wrote:
> wrote:
>
>
>
> > > I've heard about scoring the glass on only one side and scoring it on
> > > both sides as the preferred way to cut/break glass. I've done it both
> > > ways. Anyone got any real insight into this matter????
>
> > > H. R.(Bob) Hofmann
>
> > score it on one side. break apart by pulling down on each side of the
> > cut
> > with the cut on the top surface, or break on a sharp edged tabletop if
> > the
> > piece of glass is large and the part you're cutting off is not small.
>
> Any comments on scoring 1 side vs both sides before breaking??

I should add that this particular piece of glass I am going to cut is
double thickness from an old storm door. I know that the glass is NOT
tempered.

---

i cut up to 1.5" glass usually. the score breaks the surface tension. you
bend away from the score, causing a compression of the bottom surface. if
you scored it, it would make no difference, and would probably cause your
cut to wander since they won't line up exactly anyway.

how do you know it's not tempered? lack of a label doesn't guarantee that.
if it's a door, there's better than an even chance that it is tempered. i'd
wear eye protection before scoring it, if i were you.



Posted by hr(bob) hofmann@att.net on April 11, 2008, 5:53 pm
wrote:
>
> wrote:
>
>
>
>
>
> > wrote:
>
>
..
>
> > > > I've heard about scoring the glass on only one side and scoring it o=
n
> > > > both sides as the preferred way to cut/break glass. I've done it bot=
h
> > > > ways. Anyone got any real insight into this matter????
>
> > > > H. R.(Bob) Hofmann
>
> > > score it on one side. break apart by pulling down on each side of the
> > > cut
> > > with the cut on the top surface, or break on a sharp edged tabletop if=

> > > the
> > > piece of glass is large and the part you're cutting off is not small.
>
> > Any comments on scoring 1 side vs both sides before breaking??
>
> I should add that this particular piece of glass I am going to cut is
> double thickness from an old storm door. =A0I know that the glass is NOT
> tempered.
>
> ---
>
> i cut up to 1.5" glass usually. the score breaks the surface tension. you
> bend away from the score, causing a compression of the bottom surface. if
> you scored it, it would make no difference, and would probably cause your
> cut to wander since they won't line up exactly anyway.
>
> how do you know it's not tempered? lack of a label doesn't guarantee that.=

> if it's a door, there's better than an even chance that it is tempered. i'=
d
> wear eye protection before scoring it, if i were you.- Hide quoted text -
>
> - Show quoted text -

I know because the other door of the pair of sliding glass doors had a
nice neat crack running through it. Also, the doors were from about
40 years ago before the building codes were very strict. Thanks for
your comments!!

Bob Hofmann

Posted by RicodJour on April 11, 2008, 7:02 pm
wrote:
>
> > > > I've heard about scoring the glass on only one side and scoring it on
> > > > both sides as the preferred way to cut/break glass. I've done it both
> > > > ways. Anyone got any real insight into this matter????
>
>
> > > score it on one side. break apart by pulling down on each side of the cut
> > > with the cut on the top surface, or break on a sharp edged tabletop if the
> > > piece of glass is large and the part you're cutting off is not small.
>
> > Any comments on scoring 1 side vs both sides before breaking??
>
> I should add that this particular piece of glass I am going to cut is
> double thickness from an old storm door. I know that the glass is NOT
> tempered.

If it's not tempered (can't be cut), and it's not laminated (more
complicated to cut), then cutting on both sides is entirely a waste of
time.

BTW, you've set a record. I've never responded to a post that had
four prior posts quoted with three of them by the OP.
Congratulations!

R

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