Runners and Gates of PET Injection Mold All conventional types of gates can be used. Gates should be 50–100% of the part thickness.

I want to machine my own molds for injecting plastic. Farming out the work to manufacturers is probably out of my budget right now, and it’s cheaper to buy a machine and do it myself.

PET is highly sensitive to moisture at high temperatures and exhibits excessive warpage when reinforced with glass fibers. The promotion of crystallinity is achieved through adding nucleating agents and crystal growth accelerators. Crystalline moldings exhibit high modulus, gloss, and heat distortion temperatures. Warpage is minimized by the addition of particulate fillers such as mica. When low mold temperatures are used, transparent moldings can be obtained with unfilled PETs.

Chemical and Physical Properties PET is an aromatic polyester produced from the polymerization of either terephthalic acid (TPA) or dimethyl ester terephthalic acid (DMT) and ethylene glycol (EG). The glass transition is approximately 165°C [330°F] and the material crystallizes over a temperature range from 120°C–220°C [248°F–428°F].

I wouldn’t being making huge parts or anything, just aluminum molds for detailed miniatures (roughly 30mm tall). The average mold size that I would be making would be a two part mold that is 8 x 8 x 3 in total. Does anyone have some helpful tips or suggestions? Thank you!!!

Typical Applications of Polyethylene terephthalate (PET) Automotive – mirror backs – grille supports – head lamp reflectors – alternator housings Electrical applications – motor housings – electrical connectors – relays – switches – microwave oven interiors Industrial applications – furniture chair arms – pump housings – hand tools – PET bottles and containers

Hey all, I’m brand new to CNC and I’m looking for some information. I’m a tabletop war game designer who is looking to start my own business.

Polyethylene terephthalate (PET) has excellent chemical resistance and barrier properties, good strength, rigidity, fatigue endurance, and abrasion resistance.