Pellet Extruder for 3D Printing - Revision history

Fabian Bustos: /* Advice */

2022-04-16T13:29:30Z

‎Advice

Fabian Bustos: /* Extruder Design */

2022-04-16T13:28:30Z

‎Extruder Design

Fabian Bustos at 13:27, 16 April 2022

2022-04-16T13:27:36Z

Fabian Bustos: /* Machine Firmware Modification */

2020-01-31T03:27:22Z

‎Machine Firmware Modification

Fabian Bustos: /* Machine Firmware Modification */

2020-01-31T02:38:50Z

‎Machine Firmware Modification

Fabian Bustos: /* Machine Firmware Modification */

2020-01-31T02:20:38Z

‎Machine Firmware Modification

Fabian Bustos: /* Machine Firmware Modification */

2020-01-31T02:17:44Z

‎Machine Firmware Modification

Fabian Bustos: /* Calibration and Testing */

2020-01-29T22:38:38Z

‎Calibration and Testing

Fabian Bustos: /* Calibration and Testing */

2020-01-19T11:26:04Z

‎Calibration and Testing

Fabian Bustos: /* Calibration and Testing */

2020-01-17T21:58:50Z

‎Calibration and Testing

@@ Line 190: / Line 190: @@
 |-
 | 5 || Roll some teflon tape around the threads of the nipple pipe and screw the pipe cap on one side and the reservoir on the another, the tape will avoid plastic leaks that could occurr at high temperature. || Teflon tape and pipe wrench ||[[File:Step5 install nipple tip.jpg|100px|thumb|NIpple Pipe and Cap Assembled]]
 |}

@@ Line 65: / Line 65: @@
 Extrusor_laminar_001.jpg|Nozzle´s side
 Mech top.jpg|Nozzle's top
 Boquilla cerrada.png|Closed Nozzle
 Boquilla medio.png|50% Nozzle

@@ Line 1: / Line 1: @@
 [[category:Ongoing projects]]
-[[File:Motorupgrade03.jpg|200px|thumb|Pellet Extruder]]
+[[File:Pellet 3D printer 005.jpg|300px|thumb|Pellet 3D printer]]
-[[File:Printer001.jpg|200px|thumb|Pellet 3D Printer]]
+[[File:Pellet 3D printer 002.jpg|200px|thumb|Pellet Extruder]]
 Translated version of the project "[[Extrusor de Pellets para Impresión 3D]]"
 == Project Manager ==
@@ Line 61: / Line 63: @@
 <gallery>
 Extrusor_laminar_001.jpg|Nozzle´s side
 Mech top.jpg|Nozzle's top

@@ Line 90: / Line 90: @@
 Due to the changes made on the regular Pellet Extruder hardware, a correspondent circuit, firmware and software modification is necessary to make everything work  in a synchronized way. Since the output Nozzle of the extruder generates a variable width flat filament and is able to twist 180 degrees to adapt itself to the contour of the trajectories, two additional motors have to be configured in the normal printer electronics system and programmed in the firmware. We use for the prototype printer a universal RAMPS board controlled by an Arduino Mega 2560 board, we keep the XYZE cartesian system connections, a secondary extruder driver is installed on the ramps board to control the Nozzle Amplitude.
 /01/2020
-Due to the fact that the Marlin firware has been designed to support different models of 3D printers and it makes the code harder to modify, a new firmware is in process of modification to achieve the proper combination of movements along the printing session, Sprinter firmware has the basic routines to control a cartesian 3D printer, it was the most used 3d printed controller for ARDUINO/RAMPS boards until 2013.
+After testing different 3D printer control firmwares we decided that Sprinter is the most convenient program to modify due to their simplicity to control a cartesian 3D printer system, it was the most used 3d printed controller for ARDUINO/RAMPS boards until 2013, in the first image we can appreciate the workflow that the program uses to convert gcode commands into coordinate moves sequentially in a 3D printing session, in the second image we can see the modification necessary to make this new method of extrusion work.
 <gallery>
 Normal Sprinter Workflow.png|Normal Firmware Workflow
 Sprinter Workflow modification 004.png|Firmware Workflow Modification
 Sprinter Workflow modification 005.png|Cold Extrusion Test
 </gallery>
@@ Line 151: / Line 106: @@
 /01/2020
-A custom Gcode (M93 Ax) was added to the firmware, this module receives an amplitude variable "x" wich ranges from 0 to 10mm, after some calculations it generates the pulses needed to open and close the output nozzle, after the system is wake up or after a reset is done, the default position of the nozzle's blocking rod is equal to zero, this gcode calls will be generated automatically by the Sllic3r software at especific moments of the print session.
+A custom Gcode (M93 Ax) was added to the firmware, this module receives an amplitude variable "x" wich ranges from 0 to 10mm, after some calculations it generates the pulses needed to open and close the output nozzle, when the system is wake up or after a reset is done, the default position of the nozzle's blocking rod is equal to zero and will be determined after by the commands received, this gcode calls will be generated automatically by the Slic3r software at especific moments of the printing session.
 <gallery>
 Firmware modification 31 01 2020.png|Nozzle amplitude control code definition

@@ Line 89: / Line 89: @@
 ====Machine Firmware Modification====
-Due to the changes made on the regular Pellet Extruder hardware a correspondent circuit, firmware and software have to be done to make everything work together and in a synchronized way. Since the output Nozzle of the extruder generates a variable width flat filament and is able to twist 180 degrees to adapt itself to the contour of the trajectories, two additional motors have to be configured in the normal printer electronics system and programmed in the firmware. We use for the prototype printer a universal RAMPS board controlled by an Arduino Mega 2560 board, we keep the XYZE cartesian system connections, a secondary extruder driver is installed on the ramps board to control the Nozzle Amplitude.
+Due to the changes made on the regular Pellet Extruder hardware, a correspondent circuit, firmware and software modification is necessary to make everything work  in a synchronized way. Since the output Nozzle of the extruder generates a variable width flat filament and is able to twist 180 degrees to adapt itself to the contour of the trajectories, two additional motors have to be configured in the normal printer electronics system and programmed in the firmware. We use for the prototype printer a universal RAMPS board controlled by an Arduino Mega 2560 board, we keep the XYZE cartesian system connections, a secondary extruder driver is installed on the ramps board to control the Nozzle Amplitude.
   Note: This is a functional but not definitive firmware modification, posterior reverse engineering has to be done to put the Arduino Mega in charge of the control of all the motors.

@@ Line 316: / Line 316: @@
 *The  steps per millimeter of the  new angle motor have to be tuned.
 *The steps per millimeter of the amplitude motor have to be tuned.
 == Reports & TS ==
 Reports & TS in spanish [[Extrusor de Pellets para Impresión 3D]]