Casper, the mid-size delta printer

thingiverse

This is Jasper, my very own mid-size delta 3D printer. Dimensions are 280x265x520mm, printable diameter is 160mm and printable height is about 200mm. Jasper 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 attached 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 neodymium magnet 10x4 for probe holder 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...