To ensure the consistency and vibrancy of transfer prints, our advice is to always test. You also want to invest in the highest quality of heat press as possible, with digital time, temperature, and pressure gauges. If you’ve purchased a used heat press or an inexpensive one, always test to ensure accuracy. If they’re off, you’ll have to tweak and continue to test. Excellent performing tools are critical to maximizing your success rate (including the printer).