Dry the Build Parts

After cleaning the part(s), it necessary to dry them of any solvent used in the cleaning step. This may be done in several ways, but a few recommended methods follow:

For all parts, be sure there is an absorbent cloth (disposable or otherwise) or container underneath the part to catch the solvent being cleaned off.

  1. Shop air - if you have shop air in your facility that is not tied up with the printer's air connection, this would be the most-ideal way to air-dry the parts. This is not a replacement for air drying, but will speed up the process. Once finished using compressed air, let the part sit out for 30 minutes to air dry.
blow-dry.jpg
  1. Air Compressor - If you do not have shop air, an air compressor would be the next-best solution. However, be aware that air compressors are fairly loud. This is not a replacement for air drying, but will speed up the process. Once finished using compressed air, let the part sit out for 30 minutes to air dry.
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Air Compressor. This is for sample purposes only, and is not a recommendation or endorsement of any brand of air compressor.
  1. Air Drying - Simply leave the part sitting on a paper towel for the time specified below. If a time is not specified for your resin, 60 minutes of air drying should be sufficient.

 
  1. Oven Drying - You may also use a drying oven, such as the one pictured at the right.
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Drying oven. This is for sample purposes only, and is not a recommendation or endorsement of any brand of drying oven.

 

Dry printed parts until you see no more liquid on their surfaces. For any drying method, please use the following guidelines:

  1. Always dry printed parts over a tub, lab paper towel, or absorbent cloth. Do NOT dry the part over a sink or tub that drains to normal wastewater.
  2. Discard any disposable towels used in the drying process according to all local, state and federal regulations. These towels have been in contact with uncured resin and solvents, and must be treated as such.
  3. On a regular basis, have a professional cleaning service wash any absorbent cloths used in the drying process.
  4. If you dry the part over a tub, periodically empty/clean it, discarding its contents according to all local, state, and federal regulations. The tub has been in contact with uncured resin and solvents and must be treated as such.
  5. If using an air compressor in the same room (as opposed to shop air), wear ear protection when it is in use.
  6. Always wear 100% nitrile gloves and safety glasses when handling partially cured printed parts. When drying with a high-pressure method, uncured resin or solvent may splash.
  7. If you come into contact with uncured resin during part drying or at any time, wash the affected area with soap and COLD water. Any clothes contaminated with uncured resin or solvent must be dry cleaned promptly.
  8. There might be remnants of supporting architecture left on your part(s). You can remove these supports by hand in the majority of cases. If you experience any issues removing supports, please see Troubleshooting item PCI4.

Drying Time Quick Reference for Figure 4 Resins

No matter which method you use to dry your part, you must ensure it is completely dry before proceeding to the post-curing step. The chart below serves as a quick reference for suggested air-drying times.

CAUTION: Using compressed air is not a replacement for air drying. After drying with compressed air, you must still leave the part out for at least 30 minutes to completely dry.

 

Material Type Drying Time

All current materials

Ambient or air dry > 1hr. or

Compressed air + 30 min. air dry or

Oven dry 50°C (122°F) for 10 min.