My first injection mold and the Rabit HY-4 injection molder

[gavztheouch]

Thanks for the post Robin.

yeah i think a video or picture of the machine might be handy, might be able to do that this morning.

I have a feeling the gate is elaborate because you need the wide 90 angle near the "spreader tip" but if you carried that 90 degree angle back to the sealing face it would be too wide, so I think they went with 60 degrees thereafter and blended the two together with a 4mm rad just to keep things smooth?

I think from Robins description, my machine works by holding/retaining the part in the moving half of the mold, the fixed halve is held against the nozzle permantly. So when the platens open the part is pulled away from the fixed halve and the sprue is pulled out through the 1mm hole, leaving a molten mess of plastic in the gate.