Strawberry - Ultimaker 2 Extended+
Here is all the information regarding our Ultimaker 2 Extended+, named Strawberry.
This printer has our tallest build volume - perfect for that vase you wanted for Mother's Day. It also has a couple of modifications that make it better for printing faster.
Nozzle diameter: 0.6 mm
Recommended filament: PLA
Recommended layer height: 0.2 mm
Build volume: 223x223x305 mm
How to Print on Strawberry
In order to use the society printers, you must be a member of the society and have completed the in-person induction to the society printers given by a member of the society. We look forward to meeting you!
Here is an overview of the steps required to print:
Step 1: Dowload Ultimaker Cura here.
Step 2: When prompted to add a printer, select "Ultimaker 2 Extended+" from the non-networked printers drop down menu. Name it what you like, but we suggest "Strawberry".
Step 3: As the printer has been slightly modified, you can't really use the stock Cura profiles. Here is a link to some custom profiles set up specically for this printer (member access required): https://drive.google.com/drive/folders/1UiHJBuhOKQjG9zIYwh7M8I1YIMONPnm_?usp=sharing Furthmore, double check that the nozzle size is set to 0.6 mm.
Step 4: Import your 3D design into the software in the .3mf format. The .stl format is still compatible so can also be used too. However, the .3mf format is so much cooler! (see here for why)
Step 5: Alter your settings to match your specific requirements (strength, printing time, filament usage, resolution of detail, build plate adhesion).
Step 6: Slice your model and save the generated .gcode file onto an SD card.
Step 7: Insert the SD card into the printer, turn it on (the switch is unfortunately on the rear of the machine), make sure the correct filament is inserted, select your file on the display and finally press print! It is a good idea to hang around while the first layer prints, as this is where most failures occur but otherwise you can let it do its thing!
Department Usage Guide (ignore details about costs, our printers are free for society members): Ultimaker 2+ and Ultimaker 2+ Extended Usage Instructions
Modifications Made to this Printer
1) Belt clamps to increase belt tension to allow for higher print acceleration
2) Fitted a 3D solex Matchless V3 nozzle that splits the filament into smaller holes in the heater block to increase the maximum flow rate. It achieves this be increasing the filament-heatblock surface area and by reducing the diffussion distance of heat within the filament. This increased the maximum flowrate from 12mm^3/s to 20mm^3/s.
Notes: The limiting factors for printing at these higher speeds with an Ultimaker 2+ extended are:
-Insufficient part cooling
-Motion system not being stiff enough
-Old Ultimaker firmware means linear advance can't be used to improve extrusion consistency