Hey everyone.

I have made not mutch progress on machines ( shredders , extruders and plastic injections machines) lately . But I have found out that weak point of my machines are – Bearings . And to be really specific – Housing of the bearings .

I have used – Cheap UCFLS- but with the time i have found out that housing are really fragile , they can work long – but when someone drops machine they break easy. I am testing better ones – have calculated some stress for the bearings but – this isnt any problem .

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I have made some examinations thanks to company : SKF ( www.skf.com) . On thier website. You can find good calculator for the bearings.

About the shredders , i am trying to find out way to produce more , faster , more reiable.

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Thats all for this post . Sonn I will make some update of Work In Progress of the HDD Shredder.

Hello Everyone from around the world.

I am still willing to build an HDD / Multimedia Shreddder – because I am thinking that plenty of really important resources are in the stuff we all dont need anymore.

Okay I want to present you what I am willing to build , only as a text because I have till jet designed nothing.

Specification:

• Voltage 230V or 380V ( electric motors which I am finding are 3 phase )
• Motor Power : 2,2kW -3kW ( for your purpose you can calculate it yourself : here is an link to file which allows that – https://www.dropbox.com/scl/fi/q43wg9j08t6jyq4gfuq3v/obliczenia-momentu-obrotowego.xlsx?dl=0&rlkey=ii8eh4pw3307usj8jhejt6eb5
• Torque around 7000-8000Nm
• 3RPM ( when motor 2.2kW)
• Time to shredd 1 HDD out of Aluminium alloy – 20s
• Number of teeths : 3-6 ( when 3 teeths – then output will be bigger, when 6 teeths – small clean output )
• Numbers of axes – 2
• Material – teeths should be made out of : 9Crsi , I have been thinking about Hardox or C45 – hardend as well
• Price of whole machine should be around 6-8thousand USD .
• Weigth – around 500kg
• Dimensions : 1m x 1m x 0,5m or something like this
• Mesh – I dont think that mesh could be any good , but we can try to figure it out.

If you can tell me something more about the shredding process , maybe something is missing . Please tell me . I am looking for some volonteur eingeeneres / students which could help me out with the design .

I have been working lately on few small machines and bigger one.
Many requests and few orders from USA – Wisconsin, California, South California , as well as from Canada, Chile and Papa new Guinea are pleasing me 🙂

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What is an HDD Shredder?

A hard drive shredder is a mechanical device that physically destroys old hard drives in such a way that the data they contain cannot be recovered. Hard drives are made out of casted aluminium, have many metal parts inside this means they need special equipment to do the shredding. A reliable company must have quality equipment that ensures all data is destroyed.

I have been asked many times to build an HDD Shredder. I have been thinking about the projects over an Year rigth now because of an building I have been building with my brother lately. I have decided to Deisgn and test an affordable HDD shredder. First steps are behind me, I have designed few first parts, but this is still work in Progress.

Hard Drive Shreddder Construction assumptions:

• Two Axes made out of C45 hardend material .
• 3 to 5 blades water cutted out of Hardox Steel
• Easy to assemble solid robust steel frame
• Geared motor max 3kW -5kW – where the time to crush 1 HDD Drive should be less than 15 seconds
• Automatic stop and Reverse ( te hardest thing for me)
• sheet metal housing, safe for the user

Okay , hopefully in few days I will be back here with an first prototype. If you have some knowledge, experience in this field worth sharing , please write me or just comment the post .

Best wishes

Hello I want to presen you pictures of machine I have working only on the evenings , after work . Its Injcetion machine for plastic. For temperature contorll I have used Heating bands 220v / 200W each and Rex-C 100 temperature controller.

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I have made two shredder boxes as well, blades out of C45 hardend steel. Everything for sale. More to be done soon.

Read this post and learn to distinguish the different types of plastic we have. Also when you will learn how to distinguish them, add 3 products from your fridge, kitchen, bathroom or garage to the list. Thanks to you and the help of others we will learn more about the plastic that surrounds us.

Link to Excel File on Dropbox – https://www.dropbox.com/scl/fi/nt9lwuz5kki0kwwte7k4s/Book.xlsx?dl=0&rlkey=or1opnqdipgqp427n1c4nkthh

When we heard the term ‘plastic’ three thing comes in our mind i.e. indestructible, durable and its versatile properties. But these properties of plastic now become environmental issues. Plastic is a generic name referring to certain synthetic or semisynthetic materials that can be moulded or extruded into objects or films or filaments or used for making e.g. coatings and adhesives. The researchers estimated that more that 300 million tons of plastics are produced every year and 50% are used for single purposes.

Types of Plastic

There are seven types of plastic, which are not that hard to remember :

Below you can see tables of different grades of plastics created by the group of precious plastics, take a look at it, you will learn about it what kinds of plastics how they stand out and how they are used, what product is what kind? Do you know what plastic straws are made of?

Here’s an example of what the plastic grade used to make the product might look like.

Excel with list to be filled by you >>>CLICK HERE<<< – which product is made from which type of plastics . let’s all make it together.

The year 2020 has already begun. However, I haven’t dealt with any project lately.

I have seen the insane project of Precoious Plastics and their new release – V4 it is stunning !
Go to the official page to see it on youre own eyes : https://preciousplastic.com

They have released map on which You will be able to see me with ease : https://community.preciousplastic.com/map#malyboa

. Finally, I would like to clean the rusted parts, start working and build new machines. An idea of ​​3 machines I have been thinking about since 2019 is looking like so :

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The real world looks a bit worse in my photos.
Here are the photos of the parts that I currently have. Which have been under the roof for a long time, but outside. I will try to clean them and create new machines from them.

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Last Year I have posted an Video on Youtube – which is far from professional but if someone ever will be building Injection machine – based on band heaters. The video is for You. Wiring Band Heaters with the Rex C-100 and SSR was every single time a nigthmare for me. Here you go :

Thats all for this time.

At the beginning of the year 2020, I recorded a film in Polish about the situation on the front of the fight against plastic, worldwide. About the project – ocean cleanup – https://theoceancleanup.com and the map they shared (which shows how much garbage goes to the seas and oceans) In addition, I briefly described the shredder machine I built last year. I warmly invite you to the movie, if only to help me get more views.

On January 12, 2020
a medium shredder 3D file has been made available on grabcad.com – anyone can download and use it at their own disposal. Mid size biaxial shredder was designed for PET Plastic bottles and other Plastic trash.
https://grabcad.com/library/biaxial-small-shredder-for-pet-bottles-1

Hi, not much has been happening on the subject of shredder project development until the end of 2019, I have received a few inquiries from various companies – mainly regarding HDD shredders. At one point I thought I would take on these shredders – but decided it was safer to decline the inquiries. (I was building a house in 2019 – https://budujemy.home.blog/2019/12/09/film-z-prac-od-zera-do-stanu-surowego-otwartego/
so I didn’t want to divide my attention between 2 large projects)

In the meantime I built a pu injection molding machine – where you can put ground plastic parts (e.g. HDPE) and press them into a mold, I created 2 such machines. One is working in my workshop in Wroclaw.

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In the meantime, I also built almost the entire plastic extruder / DIY filament extruder- but I lost faith in this project so I never did it.

This project will rather become a thing of the past.
If someone was – I can send the plans – CAD

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