Martin Vasko

Hi.

If you have maybe enough financial resources, you  can find some useful components, even whole machines or assemblied machine parts here -> https://bazar.preciousplastic.com/?category=machines

Maybe you can find some local machine builder, from PP bazar, so the delivery will be more affordable.

@s2019 I was forecasting pressure in the nozzle diameter via simple pressure calculation -> P=F/A , and i was expecting the increase of the pressure, with a decrease diameter, as this simple equation is saying.
However i checked your link, and also i checked Bernoulli equations brefly, and its quite opposite 😀 , there is dicrease of the pressure,…[Read more]

@pporg  you are welocome, hope it will be able to open it.
Yes I saw this video as many similar to that. i didnt catch btw book recommendations.

And yes , im aware that it is a first design shot, still very raw. 🙂

@s2019 , yes your calculation is correct. Its pressure approx. 3.7 Mpa.

95 MPa, should be created pressure in smallest diameter of the nozzle, where it connects the mold runner.

Here is 3D model link , ->  https://grabcad.com/library/pneumatic-injection-molding-machine-martin-vasko-1
that has lot of mistakes i know. Its just theoretical model f…[Read more]

@s2019 I done injection simulation in Solid Works Plastics with all parameters from designed injeciton molding machine, and after all, the machine was able to create pressure in the nozzle more than 95 MPa, which is quite good, and also simulated injection of cover was done without complications.

But im sure in order to have more comfortable…[Read more]

Bonus photo of the form for a keyring and also some other samples of the broaches, or it could be also keyring 🙂

Hey guys.

Im adding pictures of my recent new experiments with the HDPE.

1. Key rign in Shape of Slovakia with hand gravir of letter to the steel form.
The form is home-made with using some basic tools

2.  HDPE heart shape broach – made with steel heart shape form for cakes 🙂

And thats it

Cheers

@pporg  it looks quite good. Hope i will be able same or better results.

Surface of this case is caused maybe because CNC milling, or because of plastic used for the injection.

Do you know, what was the cost of the mold ?

Hi guys.

Just a simple question for those, whi have tried this method to create blades with drilling. Is it really that cost, time effective ?

Because its requiring lot of drilling, brushing , and the precision will go down probably also.

Just asking.

Maybe group order of laser cutted parts like 10-15 sets at once could solve this.

With this…[Read more]

Thank for your info. I hope it will be able to transmiss the power from the motor safely.

Update about the shredder.

Finally i managed to find motor, transmission, a clutch.

This is how it looks so far.