Differences

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--- monoprice_mp_select_mini [2017/01/10 19:59] – sdh7
+++ monoprice_mp_select_mini [2022/10/26 14:54] (current) – update with current condition. sdh7
@@ Line 3: / Line 3: @@
 ^Name| MP Select Mini|
 ^Owner | Sam Harmon |
-^Location | Electronics |
+^Location | Storage |
 ^Training needed| yes|
-^Hackable| no|
+^Hackable| yes|
 ^Model| Model Number|
 ^Serial| Serial Number|
 ^Arrival Date| October 2016|
-^Working| yes|
+^Working| no|
 ^Contact| Sam Harmon|
-Current Status: Fully Functional
+(This is the V1 mini. The V2 is a separate printer)
+Current Status: It's a mess. Currently in a box on a shelf. Rehab at your leisure?
-NOTE: This 3D printer is Sam's personal property, **not** the space's. Don't mess with it unless you've been trained!
+Status: Broken. Needs lots of Fixing
-As of right now, the easiest way to use this is to generate your Gcode elsewhere (using Cura or other slicing software), copy the files to a MicroSD card, and print via the printer's front panel.
+At some point in 2018, this printer experienced multiple failures (Display board failed, and then while troubleshooting, a voltage regulator on the main control board released the magic smoke. The main board has been replaced by a RAMPS, and the display by a low-cost LCD controller. Hotend was replaced by an E3D clone. Still needs a lot of calibration to get 100% right- last time I attempted to use it it errored out with a thermal runaway condition?
+A brief guide on usage:
+  * Maximum build area is 120mm x 120mm x 120mm
+  * This printer theoretically can print ABS, but we have not yet done so. PLA works great, though.
+    * If printing ABS, there's a special fan duct cover we've printed that will help that stops the fan from cooling the part unnecessarily.
+  * Get your design into .STL format (Thingiverse downloads come this way normally, or export the file via whatever CAD program you choose to use)
+  * The easiest & quickest slicer program I've found is [[https://ultimaker.com/en/products/cura-software|Cura]]. Download that onto your computer (we should probably get it on the main machine in the space as well...)
+  * Configure the printer with a build envelope of 120x120x120, layer height of .175mm (multiples of .04375 correspond to the step height on the Z-axis of this printer, so they're somewhat optimal)
+  * If you're using the gray PLA filament currently on the printer, it really wants an extruder temperature of 220 degrees C, and build platform temperature of 50-60 degrees C. If using some other filament, it may take some trial and error to get the temperatures right. The Lego keychain is a good test example, as it takes about 10 minutes to print.
+  * Save your sliced Gcode file onto a microSD card, and put the card into the printer's microSD card slot.
+  * Turn the printer on, select "Print", and select your .gcode file.
+  * While the build platform is heating up, I usually set the extruder temperature to whatever it needs to be (to speed things along) and set the build speed to 2.0.
+  * If printing something for personal use, please [[Donate]] a couple of dollars ($1/hour for PLA? $2/hour for TPE) to cover filament usage and other expendable parts (hot end, etc.), especially if it's a big print.
+Additional Considerations:
+  * TPE - in May 2017, we got a spool of Inland TPE (Thermoplastic Elastomer) - It does work with the MP Select Mini, but you do need to be very careful or your print will be very easily ruined. Suggestions:
+    * Run the Extruder fairly hot (235?)
+    * Put some heat on the bed, but not too much (40 seems good, 60 was too much, and the part lifted off the tape)
+    * SLOW. SUPER SLOW. I'm currently running a job at somewhere around 8 mm/s (original gcode set at 20 mm/s, and running with the MP speed set at 0.4). Any faster and the filament will kink up in the cold end of the extruder. A Lego keychain took about 71 minutes to print, versus the usual 9-10 minutes with PLA. Expect to be patient.
-Status: Fully functional
 Potential Hacks/Improvements:
-  *Octoprint: A Raspberry Pi running OctoPi is in the space (in a case printed on the printer...) It's right now running the [[RepRap]], but we could hook it up to this one.
   *Extruder (cold end) upgrade: A set of Metal extruder parts has been procured. Don't replace until necessary.
-  *Extuder (hot end) upgrade: an E3D V6 clone hotend has been procured. A mount for it will need to be printed in ABS (or stronger). Need to print the mount soon (as a just-in-case measure), but no need to perform the replacement until necessary.
   *Other modifications: [[https://hackaday.io/project/14823/logs|See Here]] for many other improvements.