3D Printer Overview

The Zcorp 3D printer z310 and z510 can print 3D objects using powder-binder technology. This additive process uses fine plaster powder to build parts layer-by-layer. Models of different complexity levels can be produced.

Advantage of 3D Printing

Objects with negative space and undercuts can be printed out. Voids created by shelling parts must have access to the outside so the unused powder can be retrieved.

How does 3D printing Work?

First, the 3D Printer spreads a thin layer of powder. Second, an ink-jet print head prints a binder in the cross-section of the part being created. The build piston then drops down, making room for the next layer, and the process is repeated. Once the part is finished, it is covered with loose powder, which is then shaken loose from the finished part.

What Kind of Materials Does the 3D Printer Use?

Plaster powder and binder

What Kind of Results can I Expect?

The resulting material is very brittle with no tensile strength. This must be considered during the modeling process. The printing quality depends on the layer thickness that is set at 0.004 inch. Deformation of the form is possible, depending on the geometry of the part and its orientation.

3D printed objects can also be finished (sanding and using filler, primer and paint)

The RPC staff can offer consulting and share examples that demonstrate printing quality.

Instructions for Preparing a Z-Print File (.ZBD file)

Upload all the Files in a Single Job Request

If you are getting more than one part printed, submit all the files under a single job request. If you submit all the files under one job then the epoxy cost is reduced.

Epoxy Infusion for Added Strength (Optional)

Coating your 3D printed model with a special epoxy formula that permeates through the plaster will add strength. This is especially recommendable for thin or spindly parts. However there is a charge for epoxy based on the surface area of the part. The model needs to cure for 24 hours for safe handling.

For more on epoxy infusion please click here

If you think you need epoxy infusion for your model please go through the instructions for applying epoxy

Which Programs are Able to Export the Right File Format?

The RPC accepts the file format .ZBD for 3D Printing. You first need to have a .STL file for preparing a .ZBD. The .stl or stereolithography format is an ASCII or binary file used mostly in manufacturing. It is a list of the triangular surfaces that describe a computer generated solid model. This is the standard input for most rapid prototyping machines. Proven programs that export .STL files are:

Only the surfaces that form a closed object can be 3D printed. The closed surface model has to be converted into a solid object, which is described by the .STL file. Once you have a .STL file please prepare .ZBD file and submit for the 3D printing. The instructions for preparing a .ZBD file are on this same web page.