Kossel Delta 3D Printer

Kossel 3D Printer

Location: 3D Printer Desk Ownership: Brandon Lu Status: Under Repair Usage Restrictions: Permission Required Printer Qualification Level: A
3D Printer
Type: Reprap - Kossel Build Volume: Diameter: 200mm, Height: 260mm Materials: PLA, ABS

RepRap Kossel printer on loan from Brandon Lu.

Getting Started

An in-person tutorial is possible and required by User:BLu before use of the printer.

General Advice and Precautions

Do not use without first getting permission from Brandon. Components such as the extruder are finicky and may be seriously damaged without the proper settings.

Precautions

Cooling

Do not let the extruder heat up without a powered fan. The recommended fan setting is always above 20%. The printer accepts fan commands in pulse-width-modulated counts ranging from 0 to 255. Always set the printer to a count of 51 or more counts when the extruder is heated up or it is expected to heat up.

Directions

The Octoprint server can be reached at http://192.168.254.95 Login credentials can be found on the printer.

Slicing with Octoprint (easiest)

1. Click "Upload" button
2. Select the file you want to upload
3. In the "Slicing *file you selected*" prompt, select slicing profile (Kossel, Kossel Support 1, Kossel Support 2). Support 1 generates support material only where the part overhangs above the bed while support 2 also generates support material where the part overhangs above itself.
4. Click the "Slice" button.
5. In the "files" section click the .gco file you just created.
6. Click "GCode Viewer" tab on right half of the screen to view the slicer output. Layers can be viewed by dragging the sliders adjacent to the simulated platform area or by clicking the buttons.
7. If you are satisfied with the slicer output, click "Print" in the "State" section of the page.
8. The printer will initiate printing.

Configuration

This is for setup. Under normal circumstances, there is no need to modify these values.

Serial Connection

Serial Port: Auto
Baudrate: 250000

Printer Profiles

These settings may or may not appear depending on your slicing software. Attempt to apply these settings.

Print bed & build volume

Form Factor: Circular
Origin at center: Checked
Heated Bed: Checked
Diameter (X/Y): 200mm
Height (Z): 260mm
G-code flavor: Marlin

Axes

Maximum Feed Rate (X, Y, Z, E): 6000, 6000, 6000, 300
Invert Control: Unchecked

Start G-code

This code runs after the printbed and extruder are heated. Since the extruder heats relatively quickly, the thermal mass of the heatsink is enough to stave off malfunctions.

G28 ;Home
M106 S51 ;Turn on fan. Only line not in the stock startup G-code.
;Prime the extruder
G92 E0
G1 F200 E3
G92 E0

Stop G-code

M106 S51 ;Keep fan running. Only line not in the stock end G-code.
M104 S0 ;hotend off
M140 S0 ;bed off
;Retract the filament
G92 E1
G1 E-1 F300
G28 X0 Y0
M84

Cooling

Enable Print Cooling: Checked
Initial Fan Speed: 20%

Materials

PLA & ABS: Preferred materials for this printer
TPE / TPC: Flexible filaments will not work reliably with Kossel printer since the printer has a bowden-tube extruder.

History

Head clogs

This printer requires specialty configuration to keep the fan spinning while the extruder is heated. Do not print without the fan running. The printer has been clogged at least five times. Every clog was because of incorrect heat application and has required specialty repairs.

Lending Terms

Kossel Delta is currently on loan from User:BLu, hereinafter referred to as "owner."

Any member or visitor of MAG Laboratory, heinafter referred to as "user," may use the printer given the included configurations and with modifications of these printer configurations. Users excluding qualified 3d printer maintainers as defined by the owner shall not attempt alterations or repairs on the printer. Users excluding qualified 3d printer maintainers as defined by the owner shall not attempt to change filament on the printer. (Soon to change)