3D Print Lab - School of Engineering Education, Purdue University

3D Printer Information
The Ideas to Innovation Laboratory has two Objet Eden350 and one Objet Eden350V 3D Printers. These printers are based on Objet's PolyJet photopolymer jetting technology that builds horizontal layers of 16-microns (0.0006 in) of model resin and support material, which is cured using ultraviolet light.

Both the Eden350 and Eden350V print in High Quality mode, with X and Y resolutions of up to 600 dpi, allowing rapid production of models with very fine details. The Eden350V features an additional printing mode - High Speed (HS) - that prints in the same resolution as High Quality mode, yet builds horizontal layers of 30-microns.
Printing Costs
The cost of printing is based upon the amount of material used by weight (includes model resin and support material).
The current material costs are:
  • Model Resin (FullCure 720 Transparent): $0.20 /gram
  • Support Material (FullCure 705 Support): $0.10 /gram
Design is an iterative process; you will incur the material costs for all parts printed including those deemed unusable.
Model Materials
The I2I Lab stocks the following model resins and support material: Additional model resins can be ordered upon request from Objet's Website. Objet's latest material pricing can be found here.
Model Dimensions
The Eden350 and Eden350V printers have a tray size of 350 (X) x 350 (Y) x 200 (Z) mm (13.8 x 13.8 x 7.9 in) which offers the flexibility to produce a single large model or multiple smaller models in one build. The maximum build size for a model is 340 x 340 x 200 mm (13.4 x 13.4 x 7.9 in) while the minimum build size is 10 mm x 10 mm x 16 micron (0.3937 x 0.3937 x 0.0006 in). The PolyJet™ technology enables horizontal layers of just 16 microns (0.0006 in), exceptionally fine details, and ultra-high walls down to 0.1 - 0.3 mm typical (accuracy varies according to the geometry, part orientations, and print size).
Data Files
The 3D printers require a standard triangulation language (.stl) file format. The following web link provides information to assist you with converting your CAD model to STL format: CAD to STL

Objet provides advice for designing a CAD model for many different applications, including how to avoid some common design mistakes. Additional information located at: Advice from Objet on Modeling for Different Applications
Cleaning Parts
After printing, the parts need to be cleaned to remove the support material. Power washers are available in the I2I Lab for you to use for cleaning. Cleaning Instructions are provided on the power washers. The I2I staff will not clean parts.

Optional Cleaning Method:
For tight tolerance parts, see Objet's Sodium Hydroxide Cleaning (NaOH) Recommendations. If you decide to use this method, you will need to purchase your own product and review the MSDS sheet for NaOH before use.
Printing Time
The printing time is dependent upon the size and complexity of the parts and the number of print jobs in the queue. The I2I staff's expectation is to have a minimum of 3 business days turn-around after your job enters the print queue (see below).
Part Painting
See Objet's Part Painting Recommendations

Additional information on painting and other post-print applications is located at: Post-Print Applications


Submitting a Project
The following steps are required to submit a project to the 3D Printer Lab:
  1. Click the Submit New Project button on the Manage Projects page and fill out the form.
  2. Fill out the Account Verification Form.
  3. Come see Mr. Womack in ARMS B098-A (his office is near the printers) to discuss your project. You must verify part dimensions, print orientation, and quantities with Mr. Womack before your job will enter the print queue. He is generally available on weekdays between 9am - 3pm.
Once Mr. Womack approves your project, it will enter the print queue. You will be informed via email when your parts have been printed, which you can pick up on the table near the 3D printers. You may also contact Mr. Womack at rwomack@purdue.edu.