In article ,
Martin Brown wrote:
On 25/09/2019 14:51, Primrose wrote:

My apologies to you, I forgot to get the link, hope this works:-

https://www.dropbox.com/s/9zixhz1j6j...nel_1.jpg?dl=0

Mostly I see JPEG artefacts but the gunge looks to me like pine resin
from a knot as Nick suggested. Is it sticky and smelling of pine?

Agreed.


Regards,
Nick Maclaren.