Zortrax M200 3D Printer
 Location: Electronics Room |
| 3D Printer |
|---|
| Brand: Zortrax Model: M200 |
The Zortax M200 is a 3D printer generously donated by Northrop Grumman Corporation.
User Guide: https://docs.google.com/document/d/1d5R4mEZI3laMhDZAmBS_YOvCCKxeParys71TMqCmo_Q/edit?usp=sharing
Critical Usage Information
This section contains instructions for successfully using the 3d printer. Failure to follow these instructions may result in failed prints or printer damage.
Automatic Leveling
Since the Zortrax automatically levels by forming a conductive path with the hotend, it is critical to perform the following steps while the hotend is heating:
- Clean the extruder nozzle and ensure that any charred plastic is removed from the nozzle surface
- Scrape the conductive pads on the printbed and ensure that there is no leftover plastic obstructing the conductive path between the pad and the nozzle
- Babysit the printer through automatic leveling and power off the printer if a nozzle collision occurs
Failure to perform the previous points can result in a printer damage, bad rafts, or failed prints.
Hotend Information
Qualification testing is not successful with PLA. This may be attributed to potential cooling issues with the hotend.
The hotend has a working fan (Fan2) that replaced the fan with a broken blade (Fan1). Fan2 is salvaged from the replaced IIIP sheet-metal filament cooler. Fan2 has been showing signs of bearing degradation and has therefore been slated for replacement in the near future. It has been noted that sleeve bearings such as the one found in Fan2 are subject to increased wear and significantly reduced service life at elevated temperatures, so a replacement with ball bearings is recommended.
The hotend is currently insulated since the bare hotend would take too long to heat up and is susceptible to significant thermal losses.
Historic Information
It was found that the hotend heatsink had a partially-threaded hole for the setscrew in 2021. This issue was fixed in mid 2022. This possibly augmented thermal performance, but the printer still does not pass PLA qualification tests.
The hotend had a partial-working fan replacement Fan2 since the original fan had a blade fall off.
Filament Usage
ABS is currently the only filament qualified for use on the printer. The default extrusion profile from Zortrax may heat the ABS to a higher temperature than required, so new guidelines temperature control guidelines are being developed for the refinement of ABS use.
ASA is a strong candidate for use on the printer with the exception that the printing profile has not been tuned yet. It has been noticed that the extrusion temperature is too high for ASA at the moment and prints utilizing ASA show significant drooping on mildly-unsupported regions. Better printing temperatures are still being developed for the qualification of ASA use.
Enclosure
The Zortrax M200 is covered with black acrylic panels that were installed on the printer when it was obtained. This includes the front, hinged panel.
The front panel has had the magnet strips on it replaced with small neodymium magnets purchased from a local Daiso store. The adhesive on the original magnet strips failed.
Optional Top Enclosure
Since ABS suffers from severe thermal expansion and warping during printing, some operators have requested the use of a top enclosure to reduce the thermal shock on the work while it is being printed. This has resulted in the construction and use of multiple top enclosures including the current cardboard incarnation.
The body of the current cardboard enclosure is constructed from a salvaged cardboard box and hot-melt glued velcro. The cover of the current cardboard enclosure includes a peltier solid state cooling module and associated heatsinks which were salvaged from a cigar refrigerator which was found while dumpster diving. Future plans include turning the enclosure into a heated, temperature controlled chamber.
Other attempts at shielding the top of the Zortrax M200 have been discarded. These include a foamboard enclosure and a wooden enclosure in reverse chronological order.
Fume Filtering
The Zortrax was attached to the Pruex filter with a foamboard upper enclosure. The purex's suction would continuously draw more heat from the extruder than the extruder could supply, so the enclosure had to be set up so that the lid was ajar.
Some members had difficulty leaving the lid ajar even when instructed to.
Operators' Log
Brandon 2022-12-12
Y.S. Tech YW04010012BSS Ball bearing fans were purchased and a new fan was selected Fan3. The Zortrax M200 was placed under maintenance to finally replace Fan2. Fan replacement may be complicated by the state of the fan cable since previous fan replacement noted that the splice on the fan cable made it harder to thread through the cable harness in the printer's extruder assembly. It may be necessary to have two splices and three lengths of wire: a length to the red JST-XH 2-Pin connector, a length that would sit inside the extruder wiring path, and a length left wired into the fan.
Brandon 2022-12-13
The Y.S. Tech fan, Fan3, was not the right voltage (12 instead of 24 volts) and just stayed in a stalled state when power was applied. It can be theorized that an overvoltage lockout prevented the fan from spinning because the fan spun afterwards despite not spinning while powered by the 3d printer. Fan3 may be used on the Creality CR10S since the fan on the Creality is also suffering from bearing failure.
The wire on Fan3 was spliced according to the previous operator notes on 2022-12-12 and to a longer length of 25cm since the wire entry position on the fan is further away than it was on either Fan1 or Fan2. The length on the JST-XH crimp side is 4cm. The length in the printer conduit is 19cm. The length already attached to the fan is 1cm.
A newly developed technique for threading the fan cable through the printer conduit was developed in order to ease cable installation. The JST-XH connector is removed from the cable, and the raw crimped ends along with a length of cable including the heat-shrunken splice are covered with unshrunken 3/32" heat-shrink tubing and then guided through the printer conduit. This is an improvement on the "brute force" method previously utilized to replace the fan.
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