Download - Progress Report: Week 2 February 16, 2006
Progress Report: Week 2February 16, 2006
Manotech AssociatesJina KimForrest LiauDavid LinTeresa Wang
Product Proposal
Customized prosthetic hand
The “Manotech Approach” Low-cost, self do-it kit
Consumer ease Reversible mold
Innovative process
Progress Overview
Components of Focus Underlayer Mold
Justification More fundamental parts for shape and function
Work Interviews Development of component material specifications Materials research
Interview 1: Dr. Samuel Koo
BU Dental
Phone interview with Forrest
Recommended dental mold materials Polyether
Gives more detailed mold Silicon addition
Less accurate
Interview 2: Professor Roylance Associate Professor of Materials
Engineering, MIT
Personal interview with Jina and David on 2.10.06
Recommendations on mold materials Room temperature vulcanization
(RTV) Silicones and urethanes
Material Specifications:Underlayer & Mold
Price < $20 total for simple function, cosmetic appeal
Solidification at Room Temperature Conformability Flexibility of material
Underlayer: to accommodate prosthetic function Mold: to allow reversal
Compatible with other materials in prosthetic
Mold Materials
Company Product Specifications
US Composites74-30 RTV Liquid Urethane Mold Rubber
Hardness, Shore A: 30
Demold time: 24 hours
Soft, stretchable
TAP PlasticsUrethane RTV Mold-Making System
Hardness, Shore A: 30
Cure time: 24 hours
Tear-resistant, good for detail
Polycast RTV-885 Silicone
Hardness, Shore A: 20
High strength, low viscosity, good for complex patterns
Underlayer Materials - Silicone Rubber Properties
Low shrinkage, high strength Hardness, flexibility
Company Product Cure time
Cure temp
Price
(per 2 lbs)
Nicolas Sarra Po Yo Putty 30/40> 7 min.
23 deg C26.00
Nicolas Sarra Equinox 25/35 Fast7 min.
23 deg C34.30
Polytek Development Corp.
PlatSil Gel-1030 min.
25 deg C45.00
Specialty Silicone Products
SSP-2246 115 deg C Free sample
Future Work
More Interviews Local make-up artists Michael Rubner, Paula Hammond
Materials Testing Try out idea of a “reversible mold” Underlayer flexibility, using toy endoskeleton
Visit Our Website
http://web.mit.edu/3.042/team2_06/Welcome.html
More Information
Our Website:http://web.mit.edu/3.042/team2_06/Welcome.html