The Kraken

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The Kraken and his creator Redbeard
Kraken printing a kraken

Contents

Zone

01: 3D Printing

Owner

  • Freeside

Permissions

For general use by members. Treat equipment as if it were your own and put away as or better than you found it.

Restrictions

TODO: specify all the restrictions

  • Use only with members-only terminal connected to Kraken
  • Use with 1.75mm filament only. PLA is recommended.

About

This printer is intended to be a dedicated PLA printer at Freeside.

Freeside member Redbeard designed this custom build reprap machine. In 2012, Redbeard taught a series of 3D printing classes/meetups and used the proceeds to donate all the material and hardware to Freeside. The printer was assembled and commissioned by Freeside members.

Basic Instructions

TODO: complete instructions on use

  • Log in with your credentials to the attached members-only terminal
  • Check that the print-bed is square and centered on the platform. The print-bed is currently not attached to the y-carriage platform...it is simply resting on top of the carriage. If the print-bed is found skewed, carefully place it back on the support pads and verify levelness. If the print-bed is found out of level, follow troubleshooting guide listed below.
  • Use a clean paper towel to clean printer surface with denatured alcohol (preferred) or acetone.
  • Apply a thin layer of Disappearing Purple Elmer's Gluestick to the print surface to help adhere your print to the heated bed.
  • The only tweaks you should need to make for your prints are layer thickness and infill style/density related.
  • Please do not change the bed level or limit switches.
  • Turn off machine when done

Basic Operational Knowledge

  • How to home it.
  • How to load and unload filament (optional, but you'll be stuck with the loaded plastic type and color)
  • How to slice and send a job to it.
  • How to abort a failed job.
  • How to properly remove a print once it has completed.

Advanced Operational Knowledge

There are some more advanced tasks that not everyone needs to know to print, but needs to know to troubleshoot:

  • How to level a bed
  • How to replace the covering on a bed
  • How to tighten belts, fix misaligned axises, replace worn out parts, etc.

Slic3r Preconfigured Profiles

There are several Print and Filament profiles that have been preconfigured for Slic3r. Use these before creating or modifying your own.

Print Profiles

The preconfigured print profiles will give you a good starting point for adjusting print quality. If you create a new profile, be sure you name it descriptively and include the name of the printer in the profile.

  • Kraken-Default: Ideal configuration settings for print height, speed, and infill. Supports are disabled by default.

Filament Profiles

There should be profiles configured for filament colors. Different colors of filament will work best at slightly different temperatures. If you are printing with a new color be sure you save a new profile for the name of the color.

  • Kraken-PLA-TransGreen: 220C extruder, 70C bed

Specifications and Detailed Instructions

This printer is intended to be a dedicated PLA printer

  • PLA Plastic - Polylactic Acid or polylactide (PLA) is a thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States), tapioca roots, chips or starch (mostly in Asia), or sugarcane (in the rest of the world).

General Specs:

  • Approx Cost: $700
  • Printing Size: 200mm x 200mm x 200mm
  • Precision: 0.1mm (position/printing)
  • Printed Parts: PLA components by Redbeard
  • Non-Printed Parts: Extruded aluminum frame using components from Misumi.com
  • Control Card: RAMPS 1.4 with Polulu stepper drivers running Sprinter firmware
  • Endstops: Mechanical
  • Motors: 5x Kysan-1124090 Nema 17 Stepper Motor with 1.8°/step
  • Extruder Nozzle: J-Head Mk V-BV 0.35 for 3mm pla
- nozzle temp 180-220°C
  • Heated Bed: Prusa PCB Heated Bed
- bed temp 60°C

Warnings

  • Keep loose hair and sleeves away from all moving parts.
  • *****WARNING***** Long/loose hair may become entangled in the z-axis(vertical) threaded rods and all motor pulleys and idlers.
  • Kraken Print-bed operating temperature is 60°C (140°F)
  • Kraken Print nozzle/extruder operating temperature range is 180-220°C (356-428°F)

Safety

  • Keep loose hair and sleeves away from all moving parts.
  • Do not touch the printer nozzle/extruder while hot during print cycle.
  • PLA Plastic sample MSDS
  • PLA is not intended for:
(A) in any application which is intended for any internal contact with human body fluids or body tissues
(B) as a critical component in any medical device that supports or sustains human life; and
(C) specifically pregnant women or in any applications designed specifically to promote or interfere with human reproduction.
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