To create your size, slowly add 4 tablespoons of methocel per gallon of warm tap water to your bucket. (Note: double this mixture if printing on a large piece of fabric.) Blend the methocel and water with your whisk for about 5 minutes. You’ll feel the mixture start to thicken as you go. While you are whisking, add 1 tablespoon of household ammonia per gallon of water to the bucket.