On 24/02/2017 11:00, ss wrote:
On 24/02/2017 10:12, Martin Brown wrote:
Very hard to tell from a photo.

How it fractures (or not) when bent would distinguish brittle epoxy from
the more flexible silicone or acrylic fillers. It could even be a hot
melt PU glue which would soften when warmed up.

None of the obvious cured polymers will be easily softened by heat apart
from a PU hot melt glue.

I think his best bet is a razor blade or scalpel in parallel to the
bench and done with great care to avoid scratching the granite or
personal injury with sharp thin blades that may shatter if forced.

Some tools sold for dismantling iPads spring to mind as suitable.

Apparently it is `soft/bendy` like silicone so I reckon trying heat to
start with.

No harm in trying, but you may as well try melting the loose bit.

I guess granite worktop and pyrex hob would stand up to a blowtorch so
that might be one way to seriously weaken the bond.

If it is soft bendy like silicone then I'd be going for a pack of
classic razor blades, putting a copper safe edge on one side of it and
then a small handle to allow it to be used as a thin saw come knife.

There is a real risk of snapping it used like this but it is perhaps the
only thing that will cut a thin polymer glue in a confined space.

A boxcutter might also do the job if there is space (with the same risks
of snapping the blade and sharp breaks if forced).

--
Regards,
Martin Brown