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This is a closeup of the start of lower fincan print. This is with Polycarbonate+Carbon Fiber using a honeycomb fill. Carbon fiber fins will be epoxied into the slots. The motor mount tube will sleeve into the fincan and be epoxied in place.
Print process: Polycarbonate has trouble adhering to the hotplate without an additive. In this case, I am using a Dimaflex bond agent on the glass that allows adherence. The hotplate(borosilicate glass) is 155°C (311°F), this creates a strong bond while the print job is running. After the print is complete, the chamber slowly cools to room temperature. Due to the slight shrinking as the part cools, it removes itself from the glass without any prying. With other matierals, it is not so easy to pull off of the glass.
Polycarbonate + Carbon Fiber is much stronger than ABS and has a high glass transistion (Tg) of 147°C (296°F).
By sleeving a standard motor mount tube, I insolate the part away from higher possible temperatures from the motor.
