How long to leave primer?

[Stevemr]

I am painting my XJR wheel with Hycote grey primer then wheel paint gloss black. Having spent hours stripping and polishing the rim!
After the primer am I best leaving 24 hours before black. Or can I just carry on with black after an hour.
The primer will not need sanding as the wheel is rough cast?
I’m hoping I can carry straight on as it’s a relatively warm day tomorrow then it gets cold again
Sent from my iPhone

[CHLEMCBC]

Does the primer packaging give you any hint of curing time?

[cliffords]

If you have them in a warm house. They will be fine overnight. In a cold garage it will take a lot longer.

[Decky_Q]

Primer is designed to be absorbent so you definitely want all the solvent flashed off before colour coat, I'd give it 24hrs in a room temp dry place before hitting it with the colour coat.

[tricky1962]

Hycote's instructions on their TDS say this:-

Allow at least 24 hours between application of final coating and preparation for any subsequent finishes that
may be required.

So I would suggest a minimum of 24 hours indoors (temperature of 20°C for example). Probably the longer the better

[Fat Albert]

If you are using rattle cans, put them in a bowl of warm water, makes them work much better in these temps!

[cliffords]

Fat Albert said:

If you are using rattle cans, put them in a bowl of warm water, makes them work much better in these temps!

Don't put them in a saucepan of water with a camping stove under them , as I did about 40 years ago .
Then get sidetracked and from the back garden I managed to paint my MG Midget , that was on the front drive.

[Biker 1]

cliffords said:

Don't put them in a saucepan of water with a camping stove under them , as I did about 40 years ago .
Then get sidetracked and from the back garden I managed to paint my MG Midget , that was on the front drive.

Had a good chuckle at that one!!
I did similar with a can of expanding foam - I cross threaded it into the applicator gun & it promptly emptied itself all over a brand new engineered oak floor.... Cleaning up & remedial work took a couple of days & my boss was not pleased.

[Stevemr]

Thanks for the replies. I will primer tonight and top coat tomorrow night.
Got two fan heaters pointing at the wheel for the last couple of hours, so it’s nice and warm. Paint in hot water.

[richhead]

when i was an aprentice i was told, you cant rush paint, and you cant leave it too long

[Decky_Q]

Yes you can leave it too long.

Primer once free from solvent will start absorbing moisture from the air. Also after colour coats you want it to be touch dry only before clear coat so that they bond fully.

[cliffords]

Perhaps this will become the longest running thread on PH.

[Stevemr]

Pleased with how it turned out

[Stevemr]

[Stevemr]

[seabod91]

Cracking job.

[Bob_Defly]

Crikey that's a shiny fork!