The StereoLithography (SL) process has benefited from many advances in the last four to five years. These include new resins with reduced shrinkage and curl distortion, enhanced software, and improved scanning techniques. One can produce highly accurate parts for most dimensions within a few mils of the design value as shown in numerous accuracy and benchmarking studies. SLA systems use a laser beam focused to a spot size of 200 -250 mu m. This limits the range of applications where SL can provide accurate models to parts which do not contain very small features i.e. wall thickness values less than about 300 mu m. Industries that manufacture products involving components with small features include electronics and medical.
In this presentation we describe an extension of the SL technology to applications involving small features. This capability is achieved by reducing the laser focal spot size in an SLA-250 to 75 mu m The technological principle behind the spot size reduction is described in the presentation, together with process issues and applications of the technology.
|Title of host publication||SOLID FREEFORM FABRICATION PROCEEDINGS, SEPTEMBER 1996|
|Editors||DL Bourell, JJ Beaman, HL Marcus, RH Crawford, JW Barlow|
|Publisher||University of Texas|
|Number of pages||8|
|Publication status||Published - 1996|
|MoE publication type||A4 Article in a conference publication|
|Event||Solid Freeform Fabrication Symposium - Austin, United States|
Duration: 12 Aug 1996 → 14 Aug 1996
Conference number: 7
|Name||SOLID FREEFORM FABRICATION PROCEEDINGS (SERIES)|
|Publisher||UNIV TEXAS AUSTIN|
|Conference||Solid Freeform Fabrication Symposium|
|Period||12/08/1996 → 14/08/1996|