C) Flexa Black In The Sinterit Lisa Printer; Cleaning The Machine And Changing The Powder (Important!!!) - SINTERIT LISA User Manual

Image. 20. A warning message appearing after changing Flexa Black to PA 12 Smooth.

C) FLEXA BLACK IN THE SINTERIT LISA PRINTER


When printing using Flexa Black, smoke from the melted material may appear
inside the printer.

Due to a lower melting temperature, the visibility through the window and the
camera, is limited (the infrared heaters working in a lower power, do not produce
enough light).

After printing, the block in the PRINT BED is very firm, but also very powdery (all of
the unsintered powder falls down even when lightly shaken).

Prints made from Flexa Black (unlike those from PA12) may be easily cleaned,
using for example a paintbrush (the brushes included in the set do not have to be
used). We recommend using a sandblaster or compressed air to clean difficult to
reach places.

Flexa Black does not require refreshing – there is no need of adding new powder
to the one from the printer (as is the case with PA12). After sifting through a sieve,
basically the entire powder is ready to be reused.

CLEANING THE MACHINE AND CHANGING THE POWDER (IMPORTANT!!!):

1) Pa12 Smooth  Flexa Black
When changing PA12 for Flexa Black, no precise cleaning of the inside of the printer is
required. The same actions as cleaning the machine after printing should be carried out.
2) Flexa Black  PA12 Smooth
When changing Flexa Black for PA12 it is required to clean the machine very precisely.
Special attention should be put on the case and side walls of the PRINT BED and SOURCE
BED as well as the guide bar of the RECOATER. It is also recommend to clean around the
BEDs using compressed air. It is important to clean the printer as precisely as possible before
adding PA12; otherwise, the remaining Flexa Black (with its properties similar to gum,
becoming liquid in temperatures above 100C) may get into the mechanisms responsible for
moving the BEDs (or the RECOATER mechanism), and damage the machine.
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