On 23 May, 12:19, (Steve Firth) wrote:

Perhaps you could do so? I have several pieces of laminated glass which
are toughened. i.e. the laminate is a sheet of toughened glass, the
polymer then a sheet of non-toughened glass.

Bull**** Steve.

Talk to a glass laminator and they might (if they can be arsed to talk
to know-it-all ****wit #3 round here) why you can't have toughened in
a lamination.

If you find a way of doing this, there's a market calling out for it.
If you think you can do it with a cold adhesive laminate then there's
already a market for that, but it's no use to man nor beast as it
looks bad and it has no more strength than plain toughened.