Plastic to metal adhesive

[F]

I need to stick a 2M length of plastic coated MDF scotia to an aluminium step edge. Anyone care to recommend an adhesive that's going to last. The ones I have seem to need porous surfaces...

[Bob Minchin]

Epoxy should work, Abrade or score each surface to help it key.

[charles]

In the past I've used Evostick Impact, but nowadays Gorrila Glue is my favourite.

[Bob Minchin]

I've not used GG but I thought it needed moisture from one or other surface in order to cure?

[JimK]

Atmosphere?

Jim K

[robgraham]

I would back up the use of the PU glues for this. I've recently used when building a control box for my wood turning lathe and attached Al to Al, Al to wood and plastic to Al.

[JimK]

Ah but was that gorilla glue?

Jim K

[Tim Watts]

^is

Basically a PU adhesive Jim.

I used some for the first time last week (GG, not generic PU).

It's weird having to damp the wood with a spray first, but it works, very well.

[stuart noble]

I use UHU impact adhesive from Poundland by default. Haven't come across anything it doesn't stick to yet.

[JimK]

Ah well, gg may be a pu Tim but it's a foaming one and IMLE not hugely strong used on dissimilar materials especially thin sections a la OP.

Other PUs like sikaflex ont'other hand are extremely adhesive and would be more my choice for the OP.

Jim K