It is desirable to from a machine structural point of view to have a front door opening for user
access. It is also desirable to minimise a chambers volume to reduce the consumption of nitrogen for
inerting as well as other reasons. The chamber volume is normally reduced by minimising the height
of the chamber. This introduces a problem for user access for cleaning operations as the top of the
chamber is too low to allow ergonomic regular maintenance activities.
This article introduces a process where an internal skin is included within the chamber. After a build,
the powder settles on this surface. The internal skin can slide out of the chamber for easy access
cleaning or the skin can be taken away from the chamber and replaced with a clean set of skins so
that another job can begin immediately. The dirty skins which were removed from the chamber can
be cleaned at a later time, when operator availability allows it.
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INC, HP, "PROCESS TO CLEAN A CHAMBER WHICH HAS BEEN OPTIMIZED FOR A FRONT DOOR SYSTEM", Technical Disclosure Commons, (May 14, 2019)