Transcript RAPID PROTOTYPING Fundamentals of Rapid Prototyping …

Model Makers
Model Maker (MM) is a commercial rapid
prototyping (RP) system using tiny jets to
deposit materials onto a platform to build
physical models. Also, a cutter is employed
to plane off the deposited surface in order to
maintain smaller layer thickness and hence,
model accuracy.
History of MM
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(MM) was developed by
Sanders Prototype INC.
in the early 1990’s
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Wanted to revolutionize
the RP industry in
accuracy
Original Model Maker Materials
Build Material
−Wax based thermoplastics
 Support Material
−Wax based material with very low
melting points
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Modern Materials for MM
Metallic compounds
 Thermoplastic compounds
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MM Process
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MM system builds up layers of materials
using the method of melting and fusing
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Uses a solid modeler , inkjet print
heads , and high precision milling
techniques
Types/price of MM’s in 96
http://www.sdsc.edu/tmf/Research/lowcost.html
Sanders MM Process
Click here for a Sanders ModelMaker.
MM Materials
Below
is a 4-inch model made by the
Extrude Hone "ProMetal“ process. Made of
stainless steel powder which is infiltrated
with bronze to braze it together, it should be
quite long lasting.
Click here for examples of George Hart's
mathematical rapid prototype creations.
MM uses

In the link is an SLS model, about 3
inches in diameter, made on a DTM
2500Plus machine
Click here for more of George Hart's
creations and web page.
MM products

Examples from start to finish using
Solidscape
Click here for examples from rpwax.com's
rapid prototype models.
Click here for RP machines for jewelry
models used for direct casting.
Industries
Medical
 Jewelry
 Toys
 Teaching

Click here for examples of RP processes in
the MEDICAL industry from waxbuilders.com.
Click here for examples of RP processes in the
JEWELRY industry from waxbuilders.com.
Advantages
High precision
 Easy to use
 Non toxic
 Efficient
 Good surface finish

Disadvantages
Longer build time
 Only makes small parts
 Longer set up time
 Limited variety of support materials
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References
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www.sandersdesign.com
www.waxbuilder.com/SandersWaxModels
www.staffs.ac.uk/schools/engineering_and_te
chnology
Rapid prototyping technology text
http://www.efunda.com/processes/rapid_prot
otyping/inkjet.cfm#SMM
http://rpwax.com/pages/rp%20model%20inf
o%202.html