On Sat, 17 Aug 2013 01:25:34 -0700 (PDT), sm_jamieson
wrote:
I have a window that needs to be properly sorted sometime, but there is a about 4cm curved crack near the bottom. Is there some penetrating glue that I can use to fix this crack so it will not run any further in the near future ?
Trying to avoid replacing the pane for now.

Drill holes at the ends of the crack to stop it spreading?

I've never tried it, and doubt that it would work, but I think you
somehow need to reduce the strain at the ends of the cracks, and
drilling holes works in other mediums.