No authorization is required, but you may have to provide your own filament for this machine, which only uses proprietary filament, and costs about $99 per 600 gram spool.
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No authorization is required, but you may have to provide your own filament for this machine, which only uses proprietary filament, and costs about $99 per 600 gram spool. Methods to trick the machine into using standard filament, have been attempted (see below.)