Before you can start printing on the Ultimaker 3, you need to load materials into the printer. Material 2 will be loaded first, because this is the material that must be placed closest to the backside of the printer.

Loading material 2

1. Place the spool with the material on the spool holder. Make sure to put it with the material in a clockwise direction, so that the material can enter feeder 2 from the bottom
2. Wait until the Ultimaker 3 has detected the material (when using Ultimaker material)
3. Insert the end of the material into feeder 2 and gently push it until the material is grabbed by the feeder and is visible in the Bowden tube. Select confirm to continue

   Note: Straighten the end of the material a bit so it can easily enter the feeder.

4. Wait for the Ultimaker 3 to heat up print core 2 and to load the material into the print head
5. Confirm when the new material extrudes from the print head
6. Wait a moment for print core 2 to cool down

Loading material 1 

1. Take the material guide and hold it with the outer part towards you
2. Place the material spool on the material guide with the material in counter-clockwise direction
3. Guide the end of the material through the hole in the material guide. When you have done this, select continue
4. Place the material guide - with material 1 on it - on the spool holder, behind material 2 and wait until it is detected by the printer
5. Insert the end of the material into feeder 1 and gently push it until the material is grabbed by the feeder and is visible in the Bowden tube. Select confirm to continue
6. Wait for the Ultimaker 3 to heat up print core 1 and to load the material into the print head.
7. Confirm when the new material extrudes from the print head
8. Wait a moment for print core 1 to cool down