Ultrasonic Cleaner Method

 This procedure is a general guideline to help the customer process their printed VisJet® M2 Cast parts with VisiJet Support Wax Remover (VSWR) in a large ultrasonic cleaner. Your results may vary slightly from the below procedure. Before proceeding with this method, confirm you have the following items in place. Also, make sure to perform this procedure in a well ventilated room or under a ventilation hood following all local safety procedures and regulations.

 

Items Needed:

  • Hotplate 
  • Large ultrasonic cleaner
  • Safety goggles
  • Nitrile gloves
  • Heat resistant gloves
  • VisiJet Support Wax Remover (VSWR)

 

  1. Put on safety goggles and a pair of Nitrile gloves while operating the Ultrasonic cleaner.
  2. Fill the ultrasonic cleaner with VSWR to the maximum fill limit for your cleaner. 
  3. Cover with lid and set temperature to 86°F (30°C).

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  1. For large bulky parts, use the hot plate method to remove build parts from the build plate. The thermal shock from a freezer may cause cracking and breakage.
  2. Place build plate with build part onto hotplate.
  3. Turn on the hotplate between 175°-195° F (80°-90° C).
Heat.png Caution: Hot plate is extremely hot and will cause build plate to become too hot to handle with Nitrile gloves. Use protective heat-resistant gloves when performing this step.

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  1. Within a few moments the support wax will begin to melt. Carefully touch each part(s) to see if it starts to slide across the build plate. Larger pieces will take a bit longer than smaller ones. Once a part has released, remove it from the build plate and place on waxed paper or crinkled aluminum foil or similar non-stick surface. Turn off the hotplate when done. Quickly wipe up molten wax on plate to avoid run off and spills.

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  1. Carefully place the part(s) onto a plastic pattern basket/wire rack. The density of the wax patterns is less than the density of the VSWR, so the parts will float and move around uncontrollably if not constrained. This may result in damaged parts and incomplete support wax removal. Some soft cargo netting or plastic mesh can be used to keep the patterns submerged.

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  1. Before lowering the part(s) into the ultrasonic cleaner, remove cover and confirm the VSWR is at the recommended 86°F (30°C) temperature using a thermometer. The ultrasonic cleaner will slightly rise in temperature during the cleaning process so monitoring the temperature throughout the cleaning process is highly recommended for optimal part processing.
  2. Place part(s) in Ultrasonic Cleaner.
  3. Replace cover and turn on ultrasonic agitator.
  4. Observe your part(s) every 5-10 minutes to check the progress of the support material removal and make sure part(s) is still restrained.

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NOTE: As soon as the first part touches the VSWR, you will start to create a VSWR and Wax mixture. At some point this will become saturated depending on how many parts and how much support is on them. When it seems like the parts are taking too long to process, replenish the tank with fresh VSWR.

 

  1. The part below was removed from the Ultrasonic cleaner after 10 minutes. You can clearly see the support material dissolving away from the purple build material (M2 Cast).
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Note: Depending on geometry of part(s), saturation of wax in solvent (cloudy appearance) and agitation, results will vary moderately on the amount of time the support wax is removed from the build part.

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  1. Once the part(s) look free of support material, turn off agitator and remove part from Cleaner and place on dry paper towels.
  2. Place part(s) into a 2nd VSWR bath 77-86°F (25-30° C) to remove any residual support material from part. Swirl part(s) around manually for 20-30 seconds.
  3. Place part(s) into a warm plain water bath 77-86°F (25-30° C) to remove the slightly oily VSWR from part. Swirl part(s) around manually or rinse under warm water for about 60 seconds or until all VSWR is removed.
  4. Remove part(s) from warm water rinse and place on dry paper towels.
  5. Finished processed part below. As you can see there is a white coloration to the part. This is a result of slight etching of the build wax. This will have NO affect on casting.

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