Expanded polypropylene is highly desired for fabricating small remote control airplanes and uavs . Its high impact stability low material cost and low weight makes it very good for this role . However the two main ways of manufacturing parts from the raw material have drawbacks . Molded EPP makes a great finished product and can be produced in many shapes including compound curves and can have a smooth finish. the major drawback is the high cost of producing the molds and… Continue