There are lots of mixing methods.
Stir plates
Paint mixer (as seen above)
There is a hobby paint shaker
Ultra sonic cleaner
Attaching the bottle to a sawzall
Just shaking by hand
And the list goes on and on.
The beat recommendation is use what you have already. Unless the you have the dispossible income. That means that if you got Atleast one hand you can shake those bottles for free.
Once you step up your game and start mixing larger batches like some of our other folks here the by hand method works just fine.
