RotoCAST Molds

ProtoCAM has recently expanded our capabilities to include RotoCAST molding. We are the first rapid prototyping service bureau to have this technology in house. This allows us to maintain our own quality and assure the best possible prototypes. RotoCASTING will allow us to create thin wall hollow prototypes.

RotoCAST Rotational Molded Prototypes

The process:

RotoCASTING begins by producing a stereolithography master pattern of the final part. This part is sanded and smoothed to meet the desired finish. Once the master pattern is complete, an RTV mold is created. This silicon rubber mold is placed on the RotoCAST machine and the process begins. Material fills the mold and it is rotated simultaneously in two different axes until the part is complete.

Machine Specs:

The RotoCAST machine is capable of molds up to 50lbs. RotoCAST molds can be up to 24" high by 14" in diameter

Materials:

The RotoCASTING process uses the same urethanes as the RTV molding process. Urethane materials come in a variety of colors and durometers. A material will be suggested based upon your final production material; we have urethanes that mimic PP, HDPE, ABS, Nylon, PC, Styrene, and nearly all other injection molded plastic resins.
Clear castings are achievable and hardnesses ranging from a soft 15A up to a hard 90D.

Timing:

Typical timing for this process is about 1-2 weeks.

When to apply:

Projects that require thin wall hollow parts are ideal for this technology. Example projects would be: