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Downloading. Thanks a lot!

Happy New Year to everyone and thanks for this great site!

Hi, friends.

Just a line to wish you all Merry Christmas. I didn't give any feedback about this thread just because it has been decided to change material, so I will not inject PMMA in this mold...

Merry Christmas to everyone!

Thanks for this tip, really useful!

Thanks, Josue. The only thing I am sure it is not happening is a degradation for high speed; I am inyecting slowly. When I get back the mold (it is at the molder changing the sprue plate) I will...

To JayDub: The water temp. leaving the heater is 85ºC. I must say that the sounding line to measure the mold temp. is on the external surface od the mold, so probably it will be higher in the cavity....

That is a very witty tip, Suhas! Thanks.

Thanks for the explanations. Definitely, I can't read the extruded motor pressure. I will follow your advise, raising the temp 5ºC from the center forward. Thanks also for helping me to think and...

My molder advised me not to lubricate the ejector pins ever. He told me they don't need it and lubrication on them only carries out problems. I haven't got much experience, but he is supposed to be a...

Ok, I will try raising the heats. The problem is that will not help the resin to resist the residence time.
I don't know what the "extruded motor pressure" is. I just can read the ram pressure when...

Unfortunately, Evonik doesn’t provide a better processing guide (as far as they told me), and the one I got is not specific for the grade I am using, but for the whole family of PMMAs. As mold...

Thanks for the clue. I expect to solve the gate problem with the new platen with a single (but wider) sprue. Regarding to the mold, it is set up at 90ºC (in the heater), the actual temperature is...

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Thanks, Rickbatey, it really helps me to understand how melted plastic flows. Regarding to the sinks, I don’t get them any more, as I changed to a higher viscosity PMMA and increased the...

Ha, ha, yes, Pilot, for me it is a big challenge. Thanks for your answer. Well, when I said "bottom" I meant the farthest point from the nozzle, and “top” the nearest. Sorry; obviously, I don’t speak...

Hi, everyone.

Just a question to understand what happens inside the mold: when one injects a thick part (in this case a disc 100X15mm aprox.), is firstly formed the "skin" and then the part is...

Just a line to congratulate you all for this forum. I am a rookie and I am reading the old threads learning a lot. It is fantastic to have a place where experienced people help others. Besides, I see...