Kompaktkossel by wuselfuzz

Last crawled date: 3 years ago

This got a huge update, look here: https://www.thingiverse.com/thing:3485397
I'd not recommend building this version, it has quite a few issues.
These are a few parts I designed for my mini kossel build, made from 20x20 alu extrusions, 300mm MGN12 rails, an E3D hotend, 150mm diameter glass plate (from an 101hero.. ;) ), a ramps 1.4 clone board, homemade diagonal rods and plastic corners from an anycubic kossel (which got alu corners).
I designed two print-head versions with integrated parts cooling from scratch. V1 'Squirrel' uses a 40mm radial fan, and the E3D (or clone) 30mm hotend heat sink clip fan. V2 uses two 40mm Sunon fans and is much more silent.
The carriage v2 (schlitten v2) is based on the original kossel design.
Rough BOM:
Hardware
3x Alu Extrusion 2020 400mm
9x Alu Extrusion 2020 200mm
1x Kossel Corner set for 2020 extrusions
3x MGN12H Linear Rails + Carriages, 300mm
3x Cherry End Stop Switches
3x Steppers 17HD30003-22B
3x GT2 pulleys, 16 tooth
150x3mm round glass plate
18x flanged M3 nut to mount rails with M3 screws
3m 6mm GT2 belt
lots of M3, M4 screws, M4 in-slot nuts
Extruder and Hotend
1x E3D v6 or clone (I strongly recommend at least getting an original E3D nozzle, those are fabulous!)
1x MK8 extruder
PTFE tubing
2x Sunon 40mm axial fan
3x 25mm M3 alu hex spacers, those go into the bottom slots of the effector
Spool Holder
1x M8x90 DIN912 screw + two nuts
Diagonal Rods
Traxxas 5347 rod ends (pack of 12)
12x 120mm 6mm OD, 4mm ID carbon fiber tube
12x 20mm M4 threaded rod
epoxy glue
hole center to hole center distance AKA DELTA_DIAGONAL_ROD should be 150mm. I printed a helper rod with two long M3 screws at that distance with my other printer.
Electronics

Anycubic Trigorilla board (RAMPS 1.4 compatible) + 4x TMC2208 stepper drivers
Printed Parts
3x schlitten_v2
1x druckkopf_v2
1x druckkopf_v2_bracket
3x endstopholder
1x extruderhalter
3x plattenhalter (printing two of them with kante=-1 might be a good idea)
for the spool holder:
2x rollenhalter1
1x rollenhalter1a
1x rollenhalter1b
2x rollenhalter2
2x rollenhalter2a
1x rolle
1x knubbel (this goes on the head of the M8 screw)
Configuration
DELTA_DIAGONAL_ROD is 150mm
DELTA_RADIUS is about 80mm with druckkopf and 75mm with druckkopf_v2
DELTA_HEIGHT is about 133mm
Printable radius is about 60mm
I used a stick-on-nozzle pressure sensor for auto calibration.