The Process: Cutting
                        Edging/Polishing
Toughening
Printing
Toughened   glass   is   a   type   of   safety   glass   processed   by   controlled   thermal   or   chemical treatments    to    increase    its    strength    compared    with    normal    glass.    ST    Glass    uses    a thermal   toughening   process   which   compresses   the   outer   surfaces   of   the   glass   while also placing the inner surfaces into tension. This   process   strengthens   the   glass   against   surface   impacts   and   pressure   while   also allowing   the   glass   to   crumble   into   small   segments   if   broken.   These   small   chunks   tend to   be   almost   blunt   compared   to   the   large   jagged   shards   created   from   annealed   glass, and the likelihood of injury is greatly reduced. Glass   that   has   been   toughened   using   a   thermal   or   chemical   treatment   can   not   be modified   (cutting   grinding   or   drilling)   as   it   is   the   total   compressive   stress   that   the   final full   piece   of   glass   has   been   placed   under   that   gives   it   its   unbelievable   strength.   By creating   a   hole   in   the   glass   or   changing   the   edge,   the   glass   will   release   the   pressure rapidly from the newly modified area causing the glass to fracture. After   the   process   the   toughened   glass   has   a   greater   thermal   resistance   and   has   improved   flexural   and   tensile   strength,   the   colour,   clarity and   chemical   composition   of   the   glass   remains   unchanged.   Glass   that   has   been   produced   in   this   manner   can   also   be   laminated   in   order to   make   sure   that   after   receiving   an   impact   the   individual   shattered   pieces   stay   in   place   using   an   anti   splinter   film   that   coats   the   outer surfaces.
We   have   two   machines   at   our   factory   that   can   create   a   visually   more   appealing   edge   to a   pane   of   glass.   Our   straight   line   edger   (SLE)   is   capable   of   leaving   a   crisp   bevelled   edge to   a   straight   edged   pane   of   glass   with   the   bevel   measuring   at   roughly   1.3mm.      The bevel   is   polished   and   would   work   well   with   sliding   panes   of   glass   and   direct   bonded glass where the edge will always be on show. Our   CNC   machine   is   capable   of   providing   a   smooth   polished   finish   to   the   edge   of   the glass   with   a   similar   bevel   to   the   SLE,   however   the   CNC   can   create   this   finish   on   shaped pieces    of    glass    with    round    corners    or    complex    curves.    Drill    holes    with    polished chamfers,   cut-outs   and   notches   can   all   be   achieved   with   this   piece   of   equipment   and completed at the same time as the edge polishing. Minimum Specifications: Internal radius: 13mm External radius: 2mm
Printed   designs,   such   as   etch   patterns,   colour   imagery   or   black   borders   are   printed     on   the   rear   face   of   a   piece      of   glass   (unless   otherwise   stated)   with   the   intent   to   view them   through   the   glass   from   the   other   side.   This   process   is   done   via   a   state   of   the   art digital   printer   that   uses   ceramic   based   ink   over   7   different   channels   (CMYKGW   and Custom)   to   print   full   colour   1440   dpi   designs   before   the   toughening   process   which bonds   the   design   to   the   glass   permanently.   The   ceramic   based   ink   starts   in   a   liquid form   but   slowly   hardens   as   it   dries   to   leave   a   solid   ceramic   print   which   has   a   lower melting   point   that   the   face   of   the   glass.   When   this   is   toughened   the   design   melts   into the   face   of   the   glass   without   losing   its      complex   design   integrity   and   once   cooled becomes   the   new   face   of   the   glazing   which   is   UV   Proof,   highly   scratch   and   weather resistant. Designs    can    be    made    to    fit    any    piece    of    glass    with    popular    and    versatile    vector designs   being   able   to   stretch   or   tile   without   a   loss   in   quality.   imagery   can   also   be   printed   but   it   requires   a   decent   source   file   with   a   high number of megapixels and  print ready resolution (300dpi preferred) in order to achieve the best possible output. File types accepted: .pdf, .eps, .jpeg, .bmp, .png, .tiff, .psd  
The   first   process   after   the   initial   set   up   and   pre   production   steps   at   STG   is   to   process the   sheets   of   glass   we   have   delivered   to   the   factory   into   the   shapes   the   customer requires. Our   glass   can   arrive   at   the   factory   in   a   variety   of   sheet   sizes,   thicknesses   and      tints. Once   stored   and   stacked   into   allocated   glass   shelves,   individual   sheets   are   moved   via crane   to   a   angular   cutting   table   that   cushions   the   piece   of   glass   on   a   layer   of   air   in order   to   allow      the   glass   to   be   turned   when   required.      The   shape   of   the   glass   required by   the   customer   is   scored   into   the   sheet   by   a   diamond   cutting   wheel   and   automated cutting head that maps the shape via CAD drawings loaded in by the operator. We   can   cut   glass   and   process   glass   from   4mm   to   25mm   thick   with   the   most   common varieties   of   tint   being   clear,   grey   and   opti-white   glass.   Float   glass   in   this   state   after cutting is still very sharp so as a basic finish we provide an arrised edge which is created by running the edge of the glass against two bi-directional   sanding   belts   until   the   edge   is   blunt.   This   method   is   only   recommended   if   the   edge   is   going   to   be   hidden   by   a   frame   as   it   is less aesthetically pleasing than the other finishing  methods we provide. 
The Process: Cutting
Printing
Toughened   glass   is   a   type   of   safety   glass   processed   by   controlled   thermal   treatments    to    increase    its    strength    compared    with    normal    glass.    thermal   toughening   process   which   compresses   the   outer   surfaces   of   also placing the inner surfaces into tension. This   process   strengthens   the   glass   against   surface   impacts   and   pressure   allowing   the   glass   to   crumble   into   small   segments   if   broken.   These   small   to   be   almost   blunt   compared   to   the   large   jagged   shards   created   from   and the likelihood of injury is greatly reduced. Glass   that   has   been   toughened   using   a   thermal   or   chemical   treatment   modified   (cutting   grinding   or   drilling)   as   it   is   the   total   compressive   stress   full   piece   of   glass   has   been   placed   under   that   gives   it   its   unbelievable   creating   a   hole   in   the   glass   or   changing   the   edge,   the   glass   will   release   rapidly from the newly modified area causing the glass to fracture. After   the   process   the   toughened   glass   has   a   greater   thermal   resistance   and   chemical   composition   of   the   glass   remains   unchanged.   Glass   that   to   make   sure   that   after   receiving   an   impact   the   individual   shattered   surfaces.
We   have   two   machines   at   our   factory   that   can   create   a   visually   more   a   pane   of   glass.   Our   straight   line   edger   (SLE)   is   capable   of   leaving   a   crisp   to   a   straight   edged   pane   of   glass   with   the   bevel   measuring   at   roughly   bevel   is   polished   and   would   work   well   with   sliding   panes   of   glass   and   glass where the edge will always be on show. Our   CNC   machine   is   capable   of   providing   a   smooth   polished   finish   to   glass   with   a   similar   bevel   to   the   SLE,   however   the   CNC   can   create   this   pieces    of    glass    with    round    corners    or    complex    curves.    Drill    holes    chamfers,   cut-outs   and   notches   can   all   be   achieved   with   this   piece   of   completed at the same time as the edge polishing. Minimum Specifications: Internal radius: 13mm External radius: 2mm
Printed   designs,   on   the   rear   face   them   through   the   digital   printer   that   Custom)   to   print   bonds   the   design   form   but   slowly   melting   point   that   the   face   of   the   becomes   the   new   resistant. Designs    can    be    designs   being   able   to   stretch   or   tile   without   a   loss   in   quality.   imagery   number of megapixels and  print ready resolution (300dpi preferred) in order to achieve the best possible output. File types accepted: .pdf, .eps, .jpeg, .bmp, .png, .tiff, .psd  
The   first   process   the   sheets   of   glass   requires. Our   glass   can   arrive   Once   stored   and   crane   to   a   angular   order   to   allow      the   by   the   customer   cutting head that maps the shape via CAD drawings loaded in by the operator. We   can   cut   glass   varieties   of   tint   being   cutting is still very sharp so as a basic finish we provide an arrised edge which is created by running the edge of the glass against two bi-directional   sanding   belts   until   the   edge   is   blunt.   This   method   is   only   less aesthetically pleasing than the other finishing  methods we provide.