How do I adjust the extrusion speed on the 3Doodler PRO+?
After you select the preset mode of your choice, you will see a flashing number, which is the speed. Use the arrow keys on the side of the screen to select the speed of your choice from 1-10, 1 being the slowest and 10 being the fastest. After setting the desired speed, hit the select key underneath the display to lock in the setting.