Rapid Prototyping & Design
Rapid Prototyping (RP) can be defined as a group of techniques used to quickly fabricate a scale model of a part or assembly using three-dimensional computer aided design (CAD) data. RP has also been referred to as solid free-form manufacturing, computer automated manufacturing, and layered manufacturing.
Once a scale model is created, RTV rubber, such as the Hapflex™ 500 Series or silicone, is poured over the model to create a mold, commonly called tooling. Duplicate parts can be obtained using two component liquid plastics such as the Ultralloy™ & Tuffalloy™ Series. A prototype often undergoes numerous tests and alterations before production tooling is made, which can be quite expensive for injection molding. Traditional injection molding can be less expensive for manufacturing hundreds of thousands of parts, but Liquid Molding™ has proven to be faster and less expensive when producing hundreds, even thousands of parts. With equipment like the RAPIDFIL™ and MINIFIL™, Liquid Molders have the ability to use faster prodcts that gel in seconds and can be de-molded in only a few minutes. The meter-mix equipment needed for this type of processing are portable and relatively inexpensive, Liquid Molding can be done in-house and 
design changes can be made easily.
Hapco, Inc. has helped numerous companies bring production in-house, decrease their cycle times, and increase their profits at much lower upfront costs. Here are some products that will help you get the job done:
Part Materials
Ultralloy™- All-purpose Liquid Molding compounds with high physical properties for prototype or production parts.
S-RIM™ – Low viscosity, 1:1 casting resins that gel in under a minute and de-mold in less than 10.
Hapflex™ – High performance elastomeric polymer alloys. Multiple speeds, colors, and hardnesses. (25A-72D)
Tuffalloy™ – Liquid Molding compounds with thermoplastic properties.
Ultraclear™ – Crystal clear, UV stable casting resins available in a wide range of gel times.
Steralloy™ – Food & Drug Grade Liquid Molding compounds.
Castalloy™ – Economical, low viscosity, high speed casting resin with a 1:1 ratio by volume.
Moldmaking Materials
Hapflex™ 500 Series - Flexible polyurethanes that will long outlast silicone.
Hapflex™ 600 Series - Rigid elastomers that wear like iron.
Hapcast™ - Aluminum, steel, and iron filled epoxies used for cast composite and production tooling.
Haprez™ 3744/63 - Glass filled epoxy laminating system for structural backups.
Fill-Its/Haprez™ Combo – Economical, composite mixture that will reduce shrinkage and mold cost.
Equipment
RAPIDFIL™ - LCD / computer controlled, 2 component, dispensing equipment.
MINIFIL™ - Low cost, 2 component, portable, dispensing equipment.
RAPIDSHOT™ – Handheld cartridge dispensing system for 1:1, 2:1, and 4:1 ratios.
X-11 Molding Chamber – Ergonomic post-curing device that reduces the visibility of bubbles in parts and molds.