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rchitecture production f cilities

3D PRINTING GUIDELINES -

Model Structure and Submissions -1.Models should be at least 1/8 thick. We cannot be responsible for thinner models.

2.Models should be structurally stable. Take into consideration the weight of the powder and the

forces that it would exert on your models during excavation.

3.The connection between individual pieces should not be a point-to-point connection; there

must be sufficient mass to hold the model parts together; no pin connections.

4.Models should be checked by student first; the student submitting the model should go

through the following procedure:

A.Make sure that all surfaces are facing the same direction. This will eliminate NORMALS

in your models.

B.Delete all duplicate surfaces/solids in your models and make your model watertight.C.Double check the thicknesses and connection points of your models.

D.Export all models to ZPRINT as an STEREOLITHOGRAPHY (.stl)

E.If submitting more than 1 model, each model should be exported as its own .stl file.

(This gives the monitor flexibility of placing your models within a build)

F.In ZPRINT check for NORMALS in your file: EDIT_NORMALS_INVERT ALL NORMALS. If

you see a white surface in your model that means you have a normal and should go back

and fix it; if everything is black, you are ready to print.

G.In ZPRINT save your file in the following format:

date_professorsname_yourname.zbdEx: 090309_lcombs_sdolezal.zbd

* If you have more than one model just add a number at the end of your name. Files thatare not saved in this format will not be accepted, it is extremely crucial that your file is

named correctly.

5. When intending to submit a file you should take in to consideration your deadline. This means

that you should give yourself at least 48hrs (during the semester) and 1 week to a week and a

half (during finals and mid-terms).

If your final is December 8, then your file should be in by November 30th.

6.We reserve the right to refuse any models that seem incorrectly prepared or have anundetermined structure.

Please be considerate with monitors - we are here to help.

* Please visit the Architecture Shops webpage to download the 3D Submission Guide, 3D Print

Tutotial and Guidelines, as well as the ZPrint software drivers:http://www.pratt.edu/academics/architecture/architecture/cnc/

Printer must be selected as 310/Mx Offline and Powder Type is ZP131.

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Tips and Suggestions for Making a Successful Model -1.When modeling in RHINO, MAYA, or 3D MAX it is better for you to model already at the scale that

you will be printing.

Always keep in mind the size of the build box - 8 x 10 x 8.

2.It is always easier to build your model out of surfaces and then give it a thickness in RHINO by

typing the following command: OffsetSrf (Once you type that in you are given different options, makesure you click on the SOLID option and that you give it a thickness of 1/8). If you build your model in

3D MAX or Maya you can either import it into Rhino or simply import it into 3D Max and SHELL it as a

solid with the correct thickness.

3.To be absolutely positive that all surfaces are facing the same direction, in RHINO you should type

the following command:

UNIFYMESHNORMALS, automatically flipping all surfaces that are not facing the same direction.

4.If you are creating a sectional model and you are cutting the section from a complete model, you

should cut the section first and then give it a thickness.

5.If you wish to solidify meshes in your model, type in the command offsetMesh and follow the

instructions in the pop-up box. When adding thickness to surfaces, OFFSETMESH tends to offset

cleanly rather than creating several separate solids. To do this the surface needs to be meshed firstand then offset. If working in full scale, the resolution of the mesh of the print scale model may be

much lower than that of the full scale resulting in many fewer facets to describe the surface, making

smooth curves very jagged. This seems to be a units issue. The best solution for this so far is to copy

the full scale model into a new file set with smaller units (causing the model to be scaled down) and

then scaling the model to its final printing size. Of course, it is highly suggested to build the model for

printing in the final scale.

Pricing and Model Retrieval -1.Fall 20110 - 3D Printing is $8 per cubic inch; we round up to the nearest inch.

2.We charge the total from your PrattCard, so please load funds onto your card and bring it with you

when submitting model(s). Cash is not accepted.

3.Payment is due upon submission! Unpaid models will NOT be sent to print.4.Please pick up your model(s) as soon as you know its completed; ask monitor for an estimated pick-

up date.