November 17, 2021. 53+ Ender 3 Pro Print Size Uitstekend . The ender 3's stock nozzle size is 0.4 mm, which is a sweet spot for printing a wide variety of materials at decent speeds. X1 400 x 400mm aluminum plate; Read on to find out the real ender 3 bed size! Find out the actual ender 3 (pro/v2) dimensions.