Dondolo v1.01b

thingiverse

Dual Dual Extruder for Prusa i3. Direct Extrusion using Single Stepper Motor. Balancing Heads Prevent Inactive Nozzle Interference with Already Printed Part, Avoiding Contamination. Anti-Oozing System Implemented. Reduced Mass Allows Direct Extrusion. 09/05/2016 To Make Project More "Readable", I Tried Simplifying and Putting in Some Order. i) Eliminated 3mm Version (Too Hard to Get It Working!). ii) Added 0.5mm Clearance from Heatsink to Backplate, So Modified Idlers, Idlers_Pivot, and Pendulum. iii) Modified Idlers to Avoid Mutual Interference and Servo_Cam Interference. iv) Modified the Fan Duct (Print Fan) for a More Efficient Cooling System. v) Added "Mouse Ears" to Pendulum and Backplate to Improve Adhesion and Make Prints Easier (If You Don't Want Them, You Can Do a "Divide Objects" and Remove). 24/03/2016 Dual Dondolo on CoreGF: Automatic Head Change https://youtu.be/E3vc4A_5x28 05/12/2015 Published the "DONDOLO v1 Assembly Guide rev_10.pdf" to Help During Assembly Procedure. Published the "PTFE Cutting Tool" to Help Cutting PTFE Tube in Proper Way. 13/10/2015 Added a Driving Wheel Spacer for Use with E3D MK8 Type Driving Wheel. Insert Driving Wheel in Reverted Position (Grub Screw Outside). Firmware Configuration Tool Available at: http://marlinkimbra.it/ Thanks to MagoKimbra (Alberto Cotronei). No More Need to Manually Adapt Firmware; You Can Configure and Download an Advanced Version of Marlin Supporting Dondolo. BOM in Instructions. Note: Cam _Pendulum is the Part You Have to "Tune" Depending on Your Filament Diameter and Drive Gear Effective Diameter. Recommended Choice is the 1.75mm Version with E3D Lite Hotends and E3D Drive Gear. 19/May/2015 Version for E3D v6 1.75mm Filament is Now Available. Dual Dondolo is a Dual Extrusion System Compatible with Prusa i3. 09/05/2016 New Updates: Added Anti-Oozing Thin Plates. Modified Fan Duct and Added Mouse Ears to Pendulum and Backplate. 05/12/2015 Changes: Eliminated 3mm Version of Donaldo. Bill of Materials (BOM) List: Mechanical Parts: * E3D MK8 Filament Drive Gear * F695ZZ Ball Bearing * 604ZZ Ball Bearings (x2) * 6mm x 52mm x 1mm Traction Spring Electrical Parts: * Standard Servo (MG995) * NEMA 17 Stepper Motor (42BYGHW208 or 17HS13-0404S) * 5v DC-DC Converter * 40mm Fan Plastic Printed Parts: * Backplate * Pendulum * Pendulum Cam * Idler sx * Idler dx * Idler Pivot sx * Idler Pivot dx * Double Hotend Clamp * Double Hotend Fan Duct * Servo Cam * Front Bar * Prusa i3 X Carriage Modified Custom Parts: * Anti-Oozing sx 0.5mm Thin Plate * Anti-Oozing dx 0.5mm Thin Plate * M4 x 7mm Threaded Rod (x2) Hotends: * E3D v6 or E3D Lite Full Kit (x2)