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Method of post processing stereolithographically produced objects

  • US 5,482,659 A
  • Filed: 12/22/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 12/22/1994
  • Status: Expired due to Term
First Claim
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1. A method of post processing stereolithographically produced semi-hollow objects comprising the steps of:

  • (a) creating at least two fitting holes in the object to facilitate internal resin evacuation;

    (b) attaching at least one air hose to a fitting hole wherein remaining fitting holes are capped, except at least one fitting hole remains open for resin drainage;

    (c) subjecting the object to air flow for between about 0.5 hours and about 2 hours, at a temperature greater than about 75°

    F.;

    (d) removing any air hoses and then externally cleaning the object with alcohol;

    (e) removing any caps and submerging the object in a bath of alcohol, wherein the bath is internally agitated; and

    (f) removing the object from the bath and repeating steps (b) through (e) to displace residual resin, wherein total object exposure time to alcohol does not exceed 3 hours.

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