Molding and Casting forms - Proto Technologies

Proto Technologies is an AS9100D:2016 Certified Casting and Molding Shop specializing in Urethane Plastic, Silicone, Foam, and Epoxy cast parts.

Our casting processes are optimal for rapid prototyping and low volume production for part quantities from one to several hundred. Cast parts quickly and accurately replicate injection molded production parts, without the large upfront cost.

Cast prototypes and production parts are used for:

  • Advanced Prototypes – production grade materials for functional prototypes that accurately represent production parts.
  • Initial Production – first run production parts weeks before production tooling is complete.
  • Low Volume Production – when quantity or design does not justify investment in injection mold tooling.
  • Market Testing – samples for user evaluation, customer feedback and consumer testing.
  • Demonstration – samples for trade show, marketing, or investment presentations.

Silicone Molds:

Silicone molding is our primary mold and casting process. Expert mold makers start with a precision finished master and pour the silicone mold in two or more sections as needed. The urethane, silicone or other customer specified material is then cast with either vacuum assistance by hand or with our RIM machine. After curing, parts are removed from the mold, finished as needed and verified for quality. On average, a silicone mold can accurately cast about 20 to 50 parts. The maximum production quantity is dependent on part design and material cast.

Aluminum Composite Epoxy Molds:

Aluminum Composite Epoxy molds are an excellent option for casting high quality parts in larger quantities than a silicone mold can produce. With an Epoxy mold we can accurately cast thin and visibly clear parts making it ideal for applications like screen covers. Epoxy molds can be easily refinished to maintain surface quality and accurately cast hundreds of parts.

3D Printed Molds:

3D Printed molds can be used in many applications to cast urethane and silicone parts. 3D printed molds are cost effective, can be made very quickly, and can accurately cast higher quantities of parts before losing casting accuracy.

Options & Finishing

  • Over-mold machined parts, wire assemblies, urethane, or other specified parts.
  • Color matching or tint the cast material for uniform cast part color.
  • Add inserts, threads, pucks, or actuators pre or post casting as needed.
  • Surface Texture can be added in mold for aesthetic and tactile feel of cast part.
  • Paint, Label, Silkscreen, Soft Touch, EMI/RFI Shielding, and many more finishing options are available.

Data Sheets for some of our most common cast materials:

Request a quote or give us a call.

(509) 891-4747