Casper, the mid-size delta printer

Notice: this is very old, dead project…

This is Casper. It's my very own mid-size delta 3D printer. Dimensions are 280x265x520mm, printable diameter is 160mm and printable height is about 200mm. Casper is driven with Nema14 steppers (including extruder, geared of course), has E3D v6 clone hotend with 0,3mm nozzle, cooling with 30x30 and 5015 fans. There is no heated bed, only ordinary glass as print surface, so printing is possible from PLA only. Using ANET mainboard with small hardware modification for calibration probe (mechanical contact from old CD drive). Endstops are small microswitches, from old computer mouse. Because of no heated bed, the power supply 12V/5A is sufficient. Extruder using MK8 feeder, small bearing 624ZZ and gear ratio 1:4,3. Diagonal arm is made from M3 threaded rod and ball joints. There are printed LM8UU bearings. All metal parts are aluminum tube 8mm diameter and aluminum profile 10x10x1mm

All printed parts are printed mostly from PETG-CF except cable holders, bearings, spool holder, bed holders and sidewalls (mainboard holder etc...). Printing resolution 0,2mm, printed on wooden Anet A8.

Whole thing is atached to MDF 8mm with 3x25mm screws.

Firmware is Marlin 1.1.8 and key parameters are:

Diagonal rod - 196.8mm

Effector offset - 30mm

Carriage offset - 16mm

Delta printable radius - 80mm

Delta height - 215mm

Delta smooth rod offset - 137mm

Axis step per unit - 200,200,200,1243

Default max feedrate - 100,100,100,50

Default max acceleration - 3000,3000,3000,8000

Default jerk - 5,5,5,5

Print bed is 3mm glass hexagon, where longer side is 180mm and shorter side is 77mm

You need print this:

2x motor base

1x motor base Z

2x pulley base

1x pulley base Z

3x pulley holder

3x endstop holder

3x carriage

6x rod tensioner

3x belt cover

6x LM8UU bearing

1x effector

1x effector holder 1

1x effector holder 2

1x fanduct as you like

1x probe holder

1x spool holder

1x extruder base

1x small gear

1x big gear

1x extruder arm

1x extruder nut holder

6x cable holder

6x bed holder

3x extruder cable holder

1x mainboard holder

1x mainboard back washer

1x mainboard front washer

1x mainboard "spring"

1x cable outlet

1x front (display) outlet

1x sign (CASPER)

2x sign holder

You also need this metal material:

9x 180mm of alu profile 10x10x1

1x 500mm of alu profile 10x10x1

6x 495mm of alu tube 8mm

3x pulley 16T for 2GT belt

12x ball rod ends M3

3x spring from ball point pen (30-35mm)

6x 180mm of threaded rod M3 (need to cut to apropriate length for 196mm diagonal rod)

some M3 bolts, nuts and washers

1x M5x50 bolt as extruder shaft

1x extruder feeder MK8

small piece (70-100mm) of alu "U" profile 8x8 for spool holder

some wires for probe and endstops

2x neodymium magnet 10x4 for probe holder

20x8mm spring, cut to half, for extruder

You also need this electronics and others:

3x Nema14 with 16T gear for axes

3x 110cm of 2GT 6mm timing belt

1x Nema14 with "D" shaft for extruder

4x mini microswitch (pitch of holes 6,5mm - from older mouse)

1x fan 30mm

1x 5015 fan

1x E3D V6 (clone) with PTFE heatbreak

60cm PTFE tube

1x pneumatic joint for 4mm PTFE tube

1x mainboard for ANET printer plus display

1x resistor 1K - this is need for mainboard modification

Modify mainboard is simple thing - add resistor 1K between pin of display socket nr.3 and +5V. This is needed for "pullup" probe pin. Calibration probe is attached to pin 3 and GND

Attached*.skp files for your modifications...

Update 09/26/2019 - i designed some new and better fanducts (3-holes the best IMHO) and new under-nozzle calibration probe holder for mini microswitch. Now it has a lot better autocalibration than older probe...

Print Settings

Printer Brand:

Anet

Printer:

A8

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

30%

Notes:

Key parts like motor base, carriage, effector parts, extruder parts and pulley base are printed from PETG-CF. All others from PLA. Infill from 30% to 100%

Post-Printing

Category: 3D Printers