3d printed model trains - wordpress.com · 07/09/2014 · 3d printed model trains? model...

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3D Printed Model TrainsSeptember 7, 2014

Grizzly Peak 3DGrizzly Peak 3D

http://grizzlypeakmodeltrains.com


Grizzly Peak 3D

Sacramento Northern 107



Grizzly Peak 3D

Key System 1001



Grizzly Peak 3D




Grizzly Peak 3D

Baldwin Interurban Truck



What is 3D printing?

• 3D printing refers to a number of different technologies for creating objects using “additive” manufacturing processes !

• An “additive” manufacturing process builds an object by combining many thin layers of material




Makerbot Industries - Replicator 2 - 3D-printer 10 (Creative Commons License, www.flickr.com/photos/creative_tools/8080028200)


http://www.flickr.com/photos/creative_tools/8080028200



• Developed in the early 1980s for rapid prototyping in manufacturing

• Technology has rapidly developed and is now being tested out in many other fields:

!• Aerospace - Rocket and jet engines • Medical / Biotech - Prosthetics, hearing aids,

organs? • Fashion - Jewelry, eyewear




Main types of 3D printing: !

• SLS - Selective laser sintering (melt powder together with a laser)

• SLA - Stereolithography (use UV light to cure plastic resin)

• FDM - Fused deposition modeling (melt plastic and extrude it




Materials used in 3D printing: !

• Plastic - Acrylic, vinyl, ABS, … • Metal - Steel, gold, silver, … • Wax - Can be used for lost wax casting • Ceramics • Others…



3D printed model trains?

Why use 3D printing for model trains? !

• Create unique models that can be shared with others

• Easy to make variations of models using copy and paste

• Easy to make duplicates for building fleets of cars or replacing broken models




Model variations example: !

• Started by modeling SN 107 • Removed the baggage section and changed

other minor details for SN 108 • Changed the baggage section and added a

snow plow for ERIE RR 3104




SN 1005 & ERIE RR 3104



Software for 3D printing

Free / open source: !

• SketchUp • Blender • FreeCAD • OpenSCAD • netfabb (basic) • Others…



Software for 3D printing

Commercial: !

• Rhino • Pro/ENGINEER • SolidWorks • Maya, Modo, ZBrush, … • Others…



Modeling for 3D printing

Special considerations for building models for 3D printing:

!

• The model must be “watertight” • Check the dimensions of the model both for

the scale and also the printing material • Try and build the model as a single object • Add sprues for models with multiple parts • Splines vs. polygons?



Home 3D printing

3D printers have become affordable for the home however they are still at an early stage:

!

• Primarily FDM type printers • May not have the resolution necessary for

scale modeling • Long print times



3D printing services

You can upload your 3D model to a service bureau and have them print it and ship it to you: !

• Industrial grade printers • Wide selection of materials • Quality assurance • Shapeways • i.materialise



3D printing resources

Various 3D printing websites and blogs: !

• RMweb (www.rmweb.co.uk) - UK model railroad website with a 3D printing forum

• 3ders.org - General 3D printing news site • http://interurban.blogspot.com - A french

blog about 3D printing interurbans


http://www.rmweb.co.uk

http://3ders.org

http://interurban.blogspot.com


Future of 3D printing?

Interesting areas of research and emerging technologies in 3D printing: !

• Full color printing • Electronics and electrical circuitry • Working mechanical assemblies



Sources

Sources and references: !

• Wikipedia - www.wikipedia.org • Creative Commons - creativecommons.org/

licenses/by/2.0/


http://creativecommons.org/licenses/by/2.0/

3d printed model trains - wordpress.com · 07/09/2014 · 3d printed model trains? model...

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