Can anyone recommend a touch-up paint that is a good match to Rustoleum's 2x Glossy white paint?

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Clubs: BARC, MDRA

You can always just decant some of the Rusto white into a cup and use that. Do it through a straw attached to the nozzle and it's quite a clean process.

Thus far I've tried Testor's gloss white and it's not a perfect match. At some point soon I'm going to try Vallejo Gloss white, but I'm not expecting perfection there either (nor a particularly glossy finish, although that can be mostly cured with clearcoat).

Neil is right - Same thing I do.
I haven't sprayed into a cup using a straw, I'll have to give that a try.

I line a small plastic cup with a zip-lock snack bag.
Using the same paint used on the model, spray a puddle of paint in the cup,
then touch up the rocket. Spray enough so it won't quickly dry.
The bag is lifted out of the can, zipped closed and thrown away.
You can use the same cup over and over.

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Hans "Chris" Michielssen
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THIS is what "The Vixen" uses for touch-ups on Rusto 2X Gloss White on my builds. It's a perfect color match and it's easy to use and to clean up. It also seems to be non-reactive and will accept any type of clearcoat you want to apply over it.
This 8 oz. can will probably last us until the next Ice Age.

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One day I went down a rabbit hole watching Youtube videos on how to decant spray paint. It was quite eye-opening, as it shows folks decanting complete fresh cans of paint by doing things like using a can opener to remove the bottom of the can. Sounded insane until I watched them do it and saw it was actually quite a well-controlled process.

But since I only need a small quantity at a time, shooting through a straw is good enough for me. It eliminates all the blowback you get from just spraying directly into a cup. I actually taped the straw to the nozzle, to ensure it would stay in position properly, and then shot the paint into a little dixie cup, and then poured it into one of these little guys: https://www.amazon.com/PH-PandaHall.../dp/B07RBNRG8L/. It stayed good for quite a while (might still be good actually, haven't checked in a while).

The most important thing I learned from watching the videos: immediately after decanting the paint, let it sit for several minutes before sealing it up. There is still considerable boil-off of propellant from the decanted paint, and if you try to seal it too early... well, bad things happen. I think I left mine for about 10 minutes-15 minutes, something like that.

I'm telling you, you can get a good entertaining hour or two watching this stuff on Youtube.

Thanks everyone for the great ideas!

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Clubs: BARC, MDRA

I always rinse out the used up little Testors and Model Master bottles with thinner, then re-use them to hold touch-up paint from spray cans.

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