High Tolerance Soft Tooling

Bonding Metal To Urethane Blood Pump Gear

Cnc lathe machined master male pattern

One steel “master male pattern” is machined on a CNC lathe from Solid Works® CAD program and mounted in a pot.

High tolerance gear female mold

A special urethane was poured over a “master male pattern” to produce a high tolerance gear female mold. The steel hub is then inserted into the urethane mold.

Urethane bonded to steel hub

With the steel hub now in the mold, urethane is poured into mold and bonds to hub. The gear and steel hub are demolded. Molds will last thousands of castings.