On Friday, 4 December 2015 10:24:33 UTC, stuart noble wrote:

IME unadulterated mortar sticks well to any reasonably solid surface,
including a builder's bucket if the plastic isn't flexed. It only ever
fails when the underlying surface is porous. Never tried, but I'm sure
you could render a jam jar given the inflexibility and zero porosity.

Cement mortar does bond well to glass. But a jamjar would offer nothing to hold it up when first applied.

SBR is interesting stuff but I get the impression there is no chemical
reaction with the cement, in fact you have to keep stirring it to
achieve any kind on integration.


NT