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Smooth Cast 61D
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Smooth Cast 321
Smooth Cast 322
Smooth Cast 325 Colormatch
Smooth Cast 326 Colormatch
Smooth Cast 327 Colormatch
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89340
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So, if it doesn't want to bend when you try to, it's probably a plastic. In real (read that "scientific") terms, this means that the hardness of the cured urethane is measured on the Shore "D" scale.

A D-60 hardness is sort of bendable.. easier described as "resilient", whereas a D-80 plastic is just plain hard. If you're trying to model a part that will eventually be injection-molded, you'll be able to locate the hardness of the ABS or styrene or whatever, then match it up to a castable urethane.
 
Smooth Cast 61D
 
The Smooth-Cast line of low-cost semi–rigid urethane casting resins cure quickly to semi-rigid plastics that offer excellent impact resistance.
 
Smooth Cast 300
 
Smooth Cast 300 liquid plastic is an ultra-low viscosity casting resin that is bright white when cured. Working time of the mixed product is 3 minutes, and demold is 10-15 minutes.
 
Smooth Cast 305
 
Smooth Cast 305 liquid plastic is an ultra-low viscosity casting resin that is bright white when cured. Working time of the mixed product is 7 minutes, and demold is 30 minutes.
 
Smooth Cast 310
 
Smooth Cast 310 liquid plastic is an ultra-low viscosity casting resin that is bright white when cured. Working time of the mixed product is 20 minutes, and demold is 2-4 hours.
 
Smooth Cast 320
 
Smooth Cast 320 is an ivory-colored ultra-low viscosity/low cost casting resin with a 3 minute work time and a 10-15 minute demold time.
 
Smooth Cast 321
 
Smooth Cast 321 is an ivory-colored ultra-low viscosity/low cost casting resin with a 7 minute work time and a 30 minute demold time.
 
Smooth Cast 322
 
Smooth Cast 322 is an ivory-colored ultra-low viscosity/low cost casting resin with a 20 minute work time and a 2-4 hour demold time.
 
Smooth Cast 325 Colormatch
 
Smooth-Cast 325 is a fast-cast resin that was developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. It has a 3 minute working time and a 10 minute demold time.
 
Smooth Cast 326 Colormatch
 
Smooth-Cast 326 is a fast-cast resin that was developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. It has a 7-9 minute working time and a 60 minute demold time.
 
Smooth Cast 327 Colormatch
 
Smooth-Cast 327 is a fast-cast resin that was developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. It has a 10-20 minute working time and a 2-4 hour demold time.
 
Plasti-Paste
 
Plasti-Paste is a new two component fiber resin that is designed for vertical surface application. Part A is a liquid and Part B is a paste.
 
Clear Plastics
 
Products for casting clear or tinted objects such as lenses and embedments.
Shell Shock Picture
Shell-Shock
 
Shell Shock is a brand new Smooth-On product used for brushing into molds to make lightweight parts.

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89340
 
X-TEND-IT DRY GAS BLANKET SPRAY
Price: $14.78
 

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BJB AF-4 1 Pint
 
BJB AF-4 Anti-Foam Agent 1-Pint Container
Price: $15.00
 
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