Will buy Epoxy Resin / Tooling Resin :

TypeEP 310 Resin B Standard hardener / EP 310 BLP* Long pot life hardener
Density (kg/dm3) 2 / 2
Hardness (Rockwell) 112R/91D / 112R/91D
Flexural Strength (N/mm2) 130 / 125
Flexural Modulus (N/mm2) 13,800 / 12,500
Tensile Strength (N/mm2) 75 / 75
Tensile Modulus (N/mm2) 14,000 / 14,500
Compression Strength (N/mm2) 265 / 255
Compression Modulus (N/mm2) 6,800 / 9,000
Izod Impact Strength (J/cm) 0.7 / 0.7
Shrinkage (%) -0.01 +-- 0
Thermal Conductivity (W/mK) 1.65 / 2.08
Linear Expansion (x 10-6/K) 30 / 31
Deflection Temperature (C) 250 / 250

Pot Life at 25C(min) 60 / 90

Application

EP310 is a castable, high strength, high heat stable tooling system, forprototype and short production runs (100 - 2000) in thermoplastics. Typicallytooling can be completed from two to four weeks depending on the complexity ofthe part. Tools produced with EP310 have excellent surface finish and can bepolished, machined, tapped and drilled.

Process

The process starts with the production of the RP master, typically SL model.The SL model is finished to the desired level before placing into a castingframe. The parting plane is established either using plasticine manually orintegrating with the part in the CAD model. Before pouring the resin, machinedinserts are integrated into the model in order to improve the tool life. Therequired amount of EP 310 material is added with the hardener and mixedthoroughly using vacuum mixer. Then the material is casted against the modeland further de-gassing is done by placing it in the vacuum chamber. This isfollowed by curing overnight at room temperature. This completes one half ofthe tool. Another half is prepared in the same way and the complete tool ispost cured with successive higher temperature up to 150 C to achieve maximumstrength. Concurrently the bolster assembly is prepared to incorporate the EPtool inserts.