Stratasys Objet30 User Manual page 217

Objet30 User Guide
Removing
For most models, the most efficient way to remove support material is by
Support Material
using a high-pressure water jet. One suitable system is the Objet WaterJet
with Water
cleaning unit.
Pressure
Figure 7-1 Objet WaterJet Cleaning Unit
To clean a model using this device, you place it in the chamber, and you
manipulate it and the jet using the built-in, waterproof sleeves. A pump turns
ordinary tap water into a high-pressure jet, and a wiper keeps the window
clear.
Use caution when cleaning delicate models with high-pressure water
systems.
Removing
Soak models in a 1-percent solution of caustic soda (sodium hydroxide) to
SUP705 with
remove support material from difficult-to-reach areas and to give the model a
Caustic Soda
smooth, clean finish. The amount of time you soak the model in the solution
depends on how delicate it is and how much support material needs to be
removed, but it is typically between half-an-hour and several hours. In any
case, you should remove as much support material as possible before the
caustic soda treatment, and rinse the model thoroughly (with a water jet)
afterwards.
Warning
Caustic soda may cause chemical burns, scarring and blindness. Mixing it
with water generates heat that could ignite other materials. Never pour
water into caustic soda. When diluting the solution, always add caustic
soda to water. Take adequate safety precautions; always use nitrile
gloves when handling caustic soda and models soaked in it.
DOC-34022 Rev. D
7 Handling Printed Models
7-3