Casper, the mid-size delta printer

prusaprinters

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 10x10x1mmAll 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 - 196.8mmEffector offset - 30mmCarriage offset - 16mmDelta printable radius - 80mmDelta height - 215mmDelta smooth rod offset - 137mmAxis step per unit - 200,200,200,1243Default max feedrate - 100,100,100,50Default max acceleration - 3000,3000,3000,8000Default jerk - 5,5,5,5Print bed is 3mm glass hexagon, where longer side is 180mm and shorter side is 77mmYou need print this:2x motor base1x motor base Z2x pulley base1x pulley base Z3x pulley holder3x endstop holder3x carriage6x rod tensioner3x belt cover6x LM8UU bearing1x effector1x effector holder 11x effector holder 21x fanduct as you like1x probe holder1x spool holder1x extruder base1x small gear1x big gear1x extruder arm1x extruder nut holder6x cable holder6x bed holder3x extruder cable holder1x mainboard holder1x mainboard back washer1x mainboard front washer1x mainboard "spring"1x cable outlet1x front (display) outlet1x sign (CASPER)2x sign holderYou also need this metal material:9x 180mm of alu profile 10x10x11x 500mm of alu profile 10x10x16x 495mm of alu tube 8mm3x pulley 16T for 2GT belt12x ball rod ends M33x 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 washers1x M5x50 bolt as extruder shaft1x extruder feeder MK8small piece (70-100mm) of alu "U" profile 8x8 for spool holdersome wires for probe and endstops2x neodymium magnet 10x4 for probe holder20x8mm spring, cut to half, for extruderYou also need this electronics and others:3x Nema14 with 16T gear for axes3x 110cm of 2GT 6mm timing belt1x Nema14 with "D" shaft for extruder4x mini microswitch (pitch of holes 6,5mm - from older mouse)1x fan 30mm1x 5015 fan1x E3D V6 (clone) with PTFE heatbreak60cm PTFE tube1x pneumatic joint for 4mm PTFE tube1x mainboard for ANET printer plus display1x resistor 1K - this is need for mainboard modificationModify 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 GNDAttached*.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 SettingsPrinter Brand:AnetPrinter:A8Rafts:NoSupports:NoResolution:0.2Infill: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-PrintingCategory: 3D Printers