普魯薩I3 MK3 MK3S先進BMG擠出機

Hello, thank you for your interest in this BMG extruder! Overall, this project can be described as challenging and therefore not well suited for beginne. From me a big thank you to all develope involved! update .2019: New add-on - new x-carriage and y-holder using bronze sintered bearing maintenance-free (plain self oil bearing, 8mm x 12mm x 12mm) itead of linear ball bearings (LMU8, 8mm x 15mm x 24mm). Advantage: much quieter because of less vibratio, less weight and maintenance-free (incl. to .zip file). This extruder is a new alternative to the well known and proven Prusa R3 / R4 / R5 extrude for the Prusa I3 MK3 3D printe. The goal is to further improve print quality while enabling good and fast maintenance. Expanding, the extruder includes the Bontech 3:1 gearbox, powered by a lightweight NEMA17 pancake stepper motor to decrease ghosting and ringing. From the use of a larger stepper motor, I advise because of the significantly higher weight from, also would have the motor axis, by 2mm, be shortened to about 18mm in length. The front of the extruder is divided into upper and lower halves for easy maintenance. To service the hotend, the base can be easily dismantled. With 3 screws from the rear, the stepper motor and the upper part of the front panel are easy to remove. The extruder housing contai no filament seor. A matching filament seor is always attached separately to the top of the extruder. Thus, a seor can be easily changed according to requirements without dismantling the extruder. 3 different seor housings are currently available. A Chimney for operation with a MMU2S, with a matching door hinge, equipped with a Prusa IR seor, or a housing for operation with the laser seor and a ball bearing to prevent false alarms, also with a matching door hinge. A seor housing for operation with the Prusa IR seor without the use of an MMU2S is also included to the attached .zip file and is currently available from , as well: Seor Add-On The extruder is designed for operation with a BEAR X axis. The holder for the X-axis (x-carriage) is made to fit (16T pinion, 20T pulley). If another X-axis or another diameter of the pulley is used, e. g. stock Prusa x-axis, the associated x-carriage is also largely suitable, but lacks access to the mounting screws of the stepper motor. As an option, a small lamp holder is added for use of, for example: The extruder is fully tested, easy to print and works fine, even with TPU filament, on my Prusa I3 MK3. Many additional files are included in the attached .zip file. Since it is a "full-size extruder", as well as the original Bondtech extruder or the Prusa R3 extruder, a changed firmware is necessary if you are using the IR-seor, e. g.: or for custom changes and compile, even for 0.9 ° itead of 1.8 ° stepper moto: When converting from the existing Prusa R3 / R4 / R5 extruder or a Bondtech (eg K63) extruder, many existing components can continue to be used. Here is a list of all additionally required but often already existing components: Hotend, e. g. E3D V6: Hotend fan: Component fan: Stepper motor: 1 x knurled screw: 1 x gear drive: 1 x motor pinion: 2 x ball bearings: 1 x axis 3.0 x 32 for the "door hinge": 1 x Gear-Kit 1.75/5.0 1 x P.I.N.D.A 2 sample 1 x laser filament seor: or 1 x IR filament seor: In addition div. M3 bolts and nuts. A special cotruction manual for this extruder has not yet been created. The pictures and parts of the itructio by and Prusa Research serve as an assembly aid. Prusa i3 MK2.5 - MK3 Upgrade Kit - Itallatio29?lang=en (E-axis assembly) E-axis assembly (textile sleeve)/822?lang=en Recommended additional modules (also incl. to the .zip file): x-axis: Part fan nozzle: More photos will follow. This thing is improved if necessary by updates. Do not forget to change the motor step paramete using an usb terminal or octoprint. I prefer this g-code values, in this order: M350 E16; change micro steps from 32 to 16 M92 E415; change steps per unit (mm) from 280 to 415 M500; store changes to the internal eeprom (rambo board). M503; check the changes. I like to awer your questio in the comments. Happy printing :-) SIE-Maker post printing, hint: Check the small set screw (M3 x 2mm) for the gear wheel. The grub screw should not exceed the intended length of 2.00mm. Do you measure higher values, please sand with fine sandpaper on the side to the axis to a max. length of 2.00mm.