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withered_preacher-
Hi,
no problem,
I know from the quality and quirky humour of your postings that you are one of the good guys.
'Caulking' is like a tar-covered rope between planks in a rudimentary boat.
No elasticity, and everyone involved from manufacturing to installation gets covered in 'shit'.
[Can you tell I made a living selling 'sealants' for a few years?].
mespilus
No-one has time to find the correct primers for long term adhesion,
for two such different materials, (hard?) wood and aluminium?
Therefore you need an elastic sealant, (not 'caulking', please @withered_preacher),
with good wear and tear resistance, great unprimed adhesion and UV resistance.
Good tear resistance rules out (cartridge/ single component) Silicones.
Good wear resistance rules out oil-based mastics and acrylics.
Domestic situation requiring quick skinning/cure time rules out polysulphides.
Want to support a firm that supports your hobby?
Soudal Fix All High Tack, item no. 84704 £6.38 from Toolstation
who are operating 'Click'n'Collect' from your local store.
Just note recommended joint dimensions for long term durability,
and,
leave a concave surface to your bead of sealant.
Editted to add link to Soudal website page for Tech data.