Hey you all!
I had some personal deadlines and could not answer in june.
Here are the updated plans!
Right now we are working on Version 2! More safety and a better handling.
But still we need two persons to shred the plastic;)
first of all, we found some errors in the files for the casing parts.
we will fix it and then we will upload it again. sorry!
mostly we shred pp. a few weeks ago i tested hdpe bottle caps. the thickness is up to 1,5 or 2mm i guess. at the moment we have no date about how much kg per hour. i think it’s a little bit more…[Read more]
the problems you mentioned are the major problems we have with our precious plastic shredder. with our “new” design we are a lot better.
a little bit of dust yes, but not that much. for all i know the big industrial ones are producing dust too. we focused on getting the shredder as much leakproof as we could. the hopper is…[Read more]
thanks! we are still working on a proper documentation. I think we will publish the video and the files during february. furthermore you can contact me personal via direct messages and i will give you some unpolished files, so you can start to work on that shredder!
@btmetz shared some photos of a high rotating shredder. we build one pretty similar – just smaller. This shredder is working great… even with a power of an bicycle! We have 4 rotating blades and 2 fixed on the casing. The blades are out of hardened steel. We focused on that design because it’s working more like the industrial standard,…[Read more]
For the shredding unit we also have considered two variants.
1. The fast one (about 1100RPM / 180-250W)
– low torque fluctuation
– we have a working prototype
– special cutting knives and axe
– very fast -> maybe more dangerous than a slow one
2. The slow one (about 100RPM / ~2000W)
– we have a working shredding unit in our…[Read more]
We made a completely different blade design and we are working with a high RPM and low torque. More or less it is exactly the opposite of the ‘normal’ precious pladtic shredder.
We precut the plastic in pieces that fit in our hopper. Until now we just have tested PP and i think the max. Thickness was about 2mm.
I will write…[Read more]
It all started with an analysis about what does the machine have to do:
– mobility -> has to be carried on a bike
– human powered / independently from electricity -> we transport it with a bike so we also have to create the energy to shred plastic
– lightweight, compact and solid -> not that easy:)
– maximum safety priority and easy to use -> we…[Read more]
Hey guys and girls!
During the summer the Kunststoffschmiede was requested to do workshops or presentations in Dresden, our hometown, but also in several other cities in Germany. That was a pleassure and we had lot of fun, but one thing that was really annoyingly was the transport of the machines. Especially the huge shredder, about 40-50 kilos, I…[Read more]
here it is. the most importand rules to design our nozzle are:
1. make sure you can heat it up nice and quickly
2. make sure you can fix the mould on a fast and save way,
we don’t use threads because it takes a long time to get the mould ready on the injection machine. that’s why we are using a car jack to press our moulds…[Read more]
When everythin is nice and smooth we are about 30 clamps during one hour. But we are using a car jack to press the mould against the nozzle. That’s a lot faster then threat. and we have less waste because our sprue shorter.
Wow! Good Work!
Do you have any daft angel? When the mould gets warm, the clamp is easy to get out.
The Kunststoffschmiede could win 10 000 €, if we get enough votes in the following contest:
You don’t have to register yourself. You just have to click on ‘Hier abstimmen’;)
Thank you so much!
Hey, sorry to all of you! The past month I was travalling through Kenya without internet…
I have just arrived… for these two points i need some time 😉
1. I’ll have to check what I can share with you. I’m sure we will upload the files. But Kunststoffschmiede is a group of a few people and I have to check if the majority agrees with it.
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