Printing and Post-Processing

Printing

When submitting your stacked build, keep in mind that the slicing operation performed by the machine might take longer than normal due to the large file sizes from the stacked parts.

Material Notes

  1. HI-TEMP 300 - You cannot create high-density prints with this material.
  2. JEWEL MASTER GRY - Use the 50 µm Prototyping Build Style.

Post Processing

NOTE: Use the appropriate cleaning solvents for your material, as per the Post-Processing instructions.

There are two ways to clear a stack of parts:

  • Clean the whole stack as one - This reduces defects from handling. The following instructions will apply to this method.
  • Take apart the stack and clean the parts independently, using your regular post-processing methods.

Clean the whole stack as one

The benefits of this method are:

  • Reduces rubbing parts
  • Can work with automation

Procedure

  1. Remove job from the printer.
  2. Punch out base with stack or keep the stack on the platform.
  3. Use compressed air to lightly break the surface tension on the stack.
  4. Pay attention to holes in parts and trapped volumes.
  5. There are two recommended methods for cleaning stacked parts:
    1. Agitation through dunking:
      1. Fill up two large baths of IPA.
      2. Keep in mind that your bath must be at least 124 x 70 x 225 mm with the print platform attached. If the print platform is not attached, the bath must be at least 124 x 70 x 195 mm.
      3. Use one bath for initial cleaning, dunking the stacked print for at least one minute.
      4. Use compressed air to dry the stack and see where uncured material still exists.
      5. Dunk the stack again for another two minutes.
      6. Use compressed air again to blow-dry the stack.
      7. Then use a clean spray bottle of IPA and spray the stack.
      8. Blow-dry with compressed air and inspect the stack for uncured material.
    2. Ultrasonic
      1. Keep in mind that your ultrasonic chamber must be at least 124 x 70 x 225 mm with the print platform attached. If the print platform is not attached, the chamber must be at least 124 x 70 x 195 mm.
      2. Fill the chamber with >91% IPA.
      3. Place the stack in the ultrasonic bath for three minutes
      4. Use compressed air to blow-dry the stack and break the surface tension of any print material still on the parts.
      5. Place the stack into the ultrasonic cleaner for another three minutes.
      6. Use compressed air to blow-dry the stack.
      7. If still not cleaned, use a spray bottle of IPA, or carefully use IPA and a brush.
  6. Leave the stacked parts out to dry for at least 90 minutes, OR place the parts in an oven for 25 minutes at 35°C (95°F).
  7. Cure the parts in the NextDent LC-3DPrint Box for the time specified in the User Guide.

Clean parts individually

The method is not recommended, as it defeats the purpose of stacking parts, unless the parts are really large and complicated. This method might be recommended if your stack did not have enough spacing between parts for UV light to reach certain surfaces during post curing.

Procedure

  1. Remove job from the printer and punch out the stack.
  2. Pull parts away from the stack according to your preferences.
  3. Place individual parts into an ultrasonic bath for three minutes, and then remove.
  4. Blow-dry parts with compressed air and inspect for residual print material.
  5. Place parts into an ultrasonic bath for another three minutes.
  6. Leave the parts out to dry for at least 90 minutes, OR place the parts in an oven for 25 minutes at 35°C (95°F).
  7. Cure the parts in the NextDent LC-3DPrint Box for the time specified in the User Guide.