On 10/06/2011 01:32, Alan wrote:
"Jules wrote in message
...


Can I use mineral oil to revive glazing putty which has started to dry
out (but not completely set)?


Linseed oil reacts with air and forms a solid resin like material.
Mineral oil would only ensure that the putty remains soft in perpetuity.

Alan


Interesting thought. Given the hardening and eventual cracking of
linseed putty, maybe a non-setting version would be an improvement. That
said, the mineral oil would probably just migrate to the surface and
collect grime in perpetuity.