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I am trying to injection mold non-filled PPS.
My barrel is about 1meter long and my temperatures are
295C nozzle
297C barrel #2 near the nozzle
296C barrel #3
262C barrel #4 nearest the hopper...

I want to injection mold screws. I am looking at unscrewing the bolt from the mold. This method puts the parting line at the base of the bolt head. I need to make three different bolt head styles...

I have read literature on Injection molding and I want to present my molding process to the forum to see if there is anything wrong with the process.
I am using simple A-B molds and I remove the...

GATES!!!!
We are not using any gates as the mold is very simple geometry. I want to reduce any metal sliding and limit it to ejector pins to reduce microscopic wear metal particles as flowing PC...

I want to make a die for injection molding polycarbonate. Do I need any special coating on the die? It is my understanding that flow temperature polycarbonate is not corrosive, is that correct?...

Suhas et al.,
Thank you very much.
Where can I find some literature about injection molding? Here is a review of my experience...
I built my first machine from a sch200 pipe, heating band, a...

I have a '91 Mitsubishi machine. I am trying to run it with two smaller pumps using vfd's for flow control. I also replaced the screw motor with an electric motor and gearbox. (17.5 HP rated...

Thank you Rick. I am looking at getting a barrel made with a bimetallic layer containing tungsten carbide. The screw will have a nitride finish.
Do you think the nitride layer is sufficient for both...

I am at 60% because I cannot get two shots. What do you mean by compression ratio?
I am getting a barrel manufactured by a third party. I need to know what materials to use for the barrel and screw....

I am setting up a system to injection mold small clear rigid PVC parts. My mold is made of stainless steel. I want to order a new screw and barrel for this job. What screw/barrel material is...

I am new to the world of injection molding. I have a Boy 15s that I retrofitted with a PLC. The PLC allowed me to add features such as having a motor spin to release threaded parts. I am using PVC....

I want to make a hemispherical part out of acrylic. My concern is which half of the die will the part stick to so I can incorporate an ejector in the die. My guess is that the opened mold will look...

I want to make 10-32 screws. The length of the screw will be .6" long. I planned to use a three piece die. The sprue end at the bottom of the screw to be trimmed. The 0.6" threaded barrel. And the...

Hi folks!
I ended up fitting my Boy 15s with a PLC. I now have full control of the system without limitations by the timers.

I want injection mold bolts using A glass filled PPS. To avoid a seam in the bolt, I want to inject the resin into a threaded die and unscrew the bolt when the resin cools. Will the resin shrink or...

I am looking for the user manual for a 15s.

I am looking for a manual for an older Boy injection machine.
Does anyone have one?

Doug