Architecture

Transcript

architecture production facilities 3D PRINTING GUIDELINES Machine Details - The Pratt Architecture 3D Printing Shop has three 3D printers ZCORP 310 Build box size --- 8’’ x 10’’ x 8’’ Price - $8 per cubic inch Cannot print color --- ONLY OFF WHITE ZCORP 650 and ZCORP 660 Build box size --- 15’’ x 10’’ x 8’’ Price - $12 per cubic inch Can print color models Guidelines for Model Structure - 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 wouldexert on your models during excavation. 3. The connection between individual pieces should not be a point-to-point connection; there must be sufficient massto 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 followingprocedure: 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 surfacein your model that means you have a normal and should go back and fix it; if everything is black, you are ready to print. 5. We reserve the right to refuse any models that seem incorrectly prepared or have an undetermined structure. Please be considerate with monitors - we are here to help. Guidelines for Model Submission - 1.Save your file in the following format date_professorsname_yourname.zbd Ex: 090309_lcombs_sdolezal.zbd *If you have more than one model just add a number at the end of your name. Files that are not saved inthis format will not be accepted, it is extremely crucial that your file is named correctly. 2. When intending to submit a file you should take in to consideration your deadline. This means that you should giveyourself 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. 3. 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. 4. Payment is due upon submission! Unpaid models will NOT be sent to print. 5. Please pick up your model(s) as soon as you know it’s completed; ask monitor for an estimated pickup date. 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’’ (310) / 15’’ x10’’ x 8’’ (650). 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, make sure 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 first and 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. Downloads of useful drivers and tutorials are available through the following address: http://www.pratt.edu/academics/architecture/architecture_about/cnc/