Gasherbrum (K3) - Release 1.2 - Beta 1

Changes from R1.1a - Mechanical:

• added optional metal motor mounts and thermal backers to the dxf folder
• z drives can now be printed on a 120mm bed sized printer
• shallow angle maxwell joints are now a bit easier to print and hold the bed a little better
• added beacon z probe support
• added k3rabiner support for sherpa mini and micro, folded ascender support to return in a future release
• removed support for some unused hotends and extruders (all dragonflys, slice copperhead, lgxlite)
• belt tensioners now hold onto the belt much better and are easier to print on lower grade printers
• xy motors are now easier to remove from the printer thanks to a change to the upper bearing mount

Remaining Open Tasks for R1.2 - Mechanical:

• purge bucket not currently supported with beacon
• k3rabiner changes not merged into main stl folder
• generate CAD
• generate updated eDrawings files

Changes from R1.1a - Software / Electrical:

• None

Remaining Open Tasks for R1.2 - Software / Electrical:

• Update config to support latest version of klipper
• add beacon support to the mainline config

Notes:

• screw tracker is still in progress, this note will be removed and an announcement will be made on discord when it is finished.

Gasherbrum (K3) - Release 1.1a

Changes from R1.1 - Mechanical:

• easier to print electronics box corners (will no longer shear parts off with 15k accels)
• grommets are now a bit easier to print (no sharp overhangs)
• some parts have had their primary and secondary filament colors swapped, in an effort to balance out the filament usage

Changes from R1.1 - Software / Electrical:

• None

Notes:

• screw tracker is still in progress, this note will be removed and an announcement will be made on discord when it is finished.

Gasherbrum (K3) - Release 1.1

Changes from R1.0 - Mechanical:

• Frostbite, K3arabiner, Shallow Maxwells, Smaller Z Motor Mounts and Quick Pull 625 Bearing Mounts added to the experimental folder (Will ship with R1.2)
• Version 2 of the Electronics Box - This brings much more customizability to end users, side mounted fans, a magnetic lid, and more space for wiring
• Removal of the Basecamp height Electronics Box and Back Panel - a bigger ebox is a better ebox
• Quickdraw V2 - no more glue :)
• Mosquito Net for Mosquito heatsink based hotends
• Switch to R4 Ascender: new toolhead body and umbilical mount

Changes from R1.0 - Software / Electrical:

• None

Notes:

• screw tracker is still in progress, this note will be removed and an announcement will be made on discord when it is finished.

Gasherbrum (K3) - Release 1

Changes from RC1 - Mechanical:

• QD2, Mosquito Net, K3arabiner, and Backpack V2 added to the experimental folder (Will ship with R1.1)
• Many printability improvements
• Addition of Sherpa Micro, Folded Ascender V4, and LGX Lite Support
• Support for additional hotends
• Adjust rail retaining and belt tensioning mechanisms
• Support for 18mm diameter xyz pulleys (not including "long" hot ends")
• Make the Summit Lid more forgiving to print, and assemble (glue still required)

Changes from RC1 - Software / Electrical:

• Update klipper configs to match the latest version of the software
• General config typos and cleanup
• Slicer config updates

Gasherbrum (K3) - Release 1 - Release Candidate 1

Changes from Beta 1 - Mechanical:

• fix interference with belted z idler
• minor toolhead cleanup (ascender, dragon, etc)
• electronics brackets tweaks
• fastener cleanup
• new "standard feet" for machine

Changes from Beta 1 - Software / Electrical:

• update klipper configs to match the latest version of the software
• general config typos and cleanup

Gasherbrum (K3) - Release 1 - Beta 1

As a team we have finally hit the point where we feel that K3 is good enough for a "Beta" flag.

Release Notes:

Project Gasherbrum (K3 for short) is a Small Format, Direct Drive, Fully Enclosed or Open Air FDM Printer.

This is an entirely scratch design, based on the efforts of the "Hypercube Overkill Project" for the XY Motion System

Our discord server can be found here: https://discord.gg/MzTR3zE

BOM/Sourcing Guide can be found here: https://docs.google.com/spreadsheets/d/1O3eyVuQ6M4F03MJSDs4Z71_XyNjXL5HFTZr1jsaAtRc/edit?usp=sharing

Project Goals:

• Fully Enclosed Design or Open Air
• 2020 Frame Members
• Build Volume of ~180^3 mm
• Direct Drive Extruder
• Shortest Belt Paths Possible, 4 Motors, 2 Per X, 2 Per Y Axis
• Moving Bed
• MGN9 Rails (XYZ and Cross)
• 9mm Belts on XY, 9mm Belts (recommended) or T12x2 Screws to Lift Z
• Maxwell Coupling on Bed Frame
• NEMA17 Motors XYZ
• LDO Stepper Motors (Optional but Recommended)
• Minimal Printed Parts (ABS/ASA Required)
• 32 bit controller standard (Single Fysetc Spider, or Fysetc S6 with expander) - Klipper Highly Recommended
• 24V Power Standard
• AC Heated Bed, MIC6 Plate with Magnetic Build Surface

• Enclosed Printers are passively heated and only designed around a 65C max chamber temperature, K3 is not intended to be a High Temperature printer. It was designed to excel at common engineering materials such as PLA, PETG, ABS and some PC/Nylon Blends