Printing From Flexible/Rubber-Like Materials (Flexa); Removing Material With A Lower Melting Point (L) To The Material With A Higher Melting Point (H); Good Practices Before And After Printing With Rubber-Like Materials - SINTERIT LISA X Original User Manual

11.2 Printing from flexible/rubber-like materials (FLEXA)

11.2.1 Removing material with a lower melting point (L) to the material with a higher melting point (H)

• When changing from L to H, it is necessary to clean the machine very precisely. Perform the cleaning procedure using
REMOVE MATERIAL – a step-by-step guide will walk you through it.
• It is important to clean the printer as thoroughly as possible before adding H; otherwise, the remaining L (e.g., FLEXA
with its properties similar to rubber, becoming liquid at temperatures above 100°C) may get into the mechanism
responsible for moving the BEDs or the Recoater mechanism, damaging the machine.
ATTENTION!
Clean the Laser Protective Glass as some fumes may be released during printing
with FLEXA, causing the glass to become foggy. Cleaning the laser protective glass
after printing from rubber-like materials requires the use of agents containing
isobutanol and methyl ethyl ketone, xylene, and toluene.

11.2.2 Good practices before and after printing with rubber-like materials

• SIEVING – A thorough sieving of the rubber-like powder is required before each printing.
• FILLING – Divide the portion of powder needed to fill the chamber into three parts. Pour in one-third of the portion
and compress thoroughly (e.g., using a Powder Trowel). Repeat these steps for the remaining portions. Thorough
compressing of rubber-like powders reduces the likelihood of print failure.
• CLEANING – Be sure to clean and degrease with ethanol before each print:
• the roller of the Recoater – this prevents powder from sticking to it during printing.
• the laser protective glass – powder vapour can settle on the glass and increase the likelihood of print failure.
Sinterit Lisa X SLS 3D Printer Original User Manual | 41