Button: Contact CNFButton: MultimediaButton: About CNF
Button: Getting StartedButton: PublicationButton: REU ProgramButton: Events & SeminarsButton: Education OutreachButton: TechnologiesButton: Lab Equipment

Button: Lab User




   

   

   

   

   

 

What Can the ObJet30 Pro Do?

RESOLUTION: The resolution is 600 dpi in X and Y. A vertical inch takes anywhere from 2 to 4 hours to print. In the Z axis, opaque materials are printed in 28-micron slices (900 dpi), and VeroClear is printed in 16-micron slices (1587 dpi). The actual resolution is somewhat less since the individual drops coalesce and drape over one another depending on particular features. Take a look at the Spec sheet.

MATERIALS: A device can be printed in a single model material. Seven model materials are available.

  • VeroClear RGD 810 — like PMMA (acrylic/plexiglass)
           colorless (grey tint at thicknesses > 10 mm)
           highest printing resolution
  • High-temperature RGD 525 — like acrylonitrile butadiene styrene (ABS)
           white opaque
           withstands 75-80°C
  • DurusWhite RGD 430 — like polypropylene, polystyrene or HDPE
           white opaque
  • VeroBlackPlus — black, opaque
  • VeroWhitePlus — white, opaque
  • VeroGray — gray, opaque
  • VeroBlue — blue, opaque

FEATURE CONSIDERATIONS

  • Trenches or raised features should be greater than 200 microns deep/tall with aspect ratios greater than 2:1 (height:width). Otherwise, sidewalls will be significantly sloped.
  • The printer will fill enclosed spaces with support material that must be physically removed. Support won't dissolve away. This means that enclosed fluidic channels will be impossible to clear of support material. These channels must be printed as open-faced features or have openings that are large enough so that the support material can be removed by hand.
  • Delicate or thin (≤ 500 microns) features can be easily broken during the cleaning process. Some thin joints may snap after being bent.

 

SIDEWALL ROUGHNESS


Sidewalls (blue arrow) are rough and exhibit layering from the printing process. The material will outgas along these vertical sidewalls under a vacuum. Such devices require outgassing under a vacuum prior to casting PDMS, coating with parylene or using as culture devices. Also note that the edges may be rounded on features smaller than 500 microns such as the edges of the raised lines. SCALE: blue arrow indicates a line that is 1 mm wide adn 2 mm tall).

 

THIN FEATURES ARE FRAGILE


Thin, raised features (less than 100-200 microns wide) are usually destroyed or removed during cleaning. The black arrow shows a footprint of a thin line (50 microns wide; 100 microns tall) that was removed. The adjacent line is broken (100 microns wide; 200 microns tall). The largest line is intact (200 microns wide; 400 microns tall).

Thin devices (less than 2 cm thick) printed inopaque materials may warp in water.

 

SUPPORT MATERIAL IS PRINTED AROUND & UNDERNEATH FEATURES


A close-up of a gear that is encased in support material. Support material is a polymer that swells, but does not dissolve, in water. It can be sprayed or physically picked away. Note the support also lines the interior openings. If these openings had been covered by more model material during printing, the entire areas of the openings would have been filled with support. The support is printed with a gridded pattern to encourage swelling in water. The support grid pattern can be made larger or smaller to control the rate of swelling and the ease of cleaning. SCALE: 15 mm diameter).

 

DEVICES WITH ENCLOSED SPACES SHOULD BE PRINTED AS OPEN-FACED PARTS


Support material supports overhangs, included enclosed spaces. There is no way to circumvent this. Here is an example showing open-faced halves of a final device (printed at different scales). The final device was assembled after the halves were cleared of support material. It may be impossible to clear away the support material from enclosed spaces. SCALE: parts on the right are 45, 25 and 9 mm long.)

 

 THE TOP OF THE PRINTED DEVICE SHOWS ARTIFACTS FROM JETTING INKS


The top surfaces of printed devices often exhibit a pattern from the printing jets. Here is a close-up of the top surface of a device. SCALE: The vertical (raised) line is 70 microns wide.



Back to Top




Button: Search Button: Search Keywords
Cornell University
NYSTARNNINNSF