For smaller mixes, I use a piece of heavy paper or cardboard, squirt the thicker of the two on first, then squirt the thinner of the two to about the same size. Mix away. If it's 5 minute(for foam) let it 'rest' for thirty seconds then mix it again and apply. If it's thirty minute (what you should use for wood) let it 'rest' for a few minutes then final mix and apply.