Warnings
Please read through all the warnings as they may save you from making a mistake that could result in injury to yourself or your M3D Crane Series printer.
Warnings
DO NOT TOUCH PRINTER WHILE OPERATING The Crane is a powerful machine. While the Crane is moving or printing you should not reach into the buildspace.
AVOID MOVING WITHOUT POWER
MOVE MOTORS/BED/EXTRUDER SLOWLY
Moving motors generates power on all printers and can damage your board. There is no clear indicator of the power you are generating however when moving very fast the fans may start to turn. If you can hear the fan moving air, you're close to voltages that will break the duet regulator (more than 28V). Moving components about 50mm/s is safe. It is best to always move components while the system is powered.
DISABLING MOTORS
When you disable motors the printhead may drop extremely slowly to the limit switch. This is normal behavior and requires rehoming.
ESD SAFETY:
The Duet contains an ARM class 2 processor, we recommend you use a wrist straps when touching any wires that could send shocks to the main processor and fry it.
DON'T USE AN ESD WRIST STRAPS TIED TO A SURGE STRIP
The printer is grounded. If you wire the strap wrong it can cause a short circuit through your body whenever you touch the printer.
USE UNDER SUPERVISION
Use product in locations where nothing can catch on fire should the worst occur. The Crane is constructed out of metal and fireproof materials. Still, PLA and other filaments can burn fire if the printer is used improperly.
MAXIMUM EXTRUDER SPEED
It is a common misconception that printhead travel movement speed (i.e. 60 mm/s) is the limiting factor when printing. However, it is extruder volumetric (or mass) flow rate that is the true limiting speed in most conditions. It is not easy to be able to exceed 9 mm^3/s (PLA) and 12 mm^3/s (Higher temp materials like PETG, ABS) except in special cases. To calculate flow rate multiple head speed, layer width, and layer height. For example: 45mm/s movement, 0.3 mm layers and 0.5 mm wide would be 6.75mm^3/s.
Z SPEED
The bed current, acceleration and speed are configured for worse case scenarios like heavy prints. You can increase speeds when printing lighter items or depending on your application of the printer.
BED TEMPERATURE
If you are using a glass print bed, give the printer an extra few minutes to reach temperature. In open air, the glass surface will be 5-10 C cooler than the bed temperature readouts from the thermistor.
FRAME CAN BE SHARP
The frame of the printer is metal and could contain sharp edges. Use caution when moving the printer or moving around the printer. Keep your hands out of the machine during operation and be careful when lifting.
BURN HAZARD
BED and NOZZLES are hot!
USE CAUTION WHEN REMOVING PRINTS
The best strategy is to let the bed cool, most prints pop off by themselves.
REMOVING DUET SD CARD DISABLES FEATURES
The Duet relies on its microSD card to serve as memory, storage for the LCD menu structure, duet webhost, and basic configurations. Without this card you can not connect over ethernet or use the LCD, however USB will still work. We do not recommend removing it. There is an SD card slot under the LCD providing a card slot physically moving print Gcode files, or use the web interface to upload Gcodes.
It should be noted that each Crane Series printer has a Voltage switch on the right hand side of the machine. For operation in the US the voltage must be set to 115.
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