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helper
16/04/2018 at 00:41
3

Really nice!

helper
21/03/2018 at 01:11
1

You can run it with 230V or 460V, thou it is only 0.25 hp, and I think that would be to weak for the shredder.

In reply to: Shredding

helper
20/03/2018 at 14:35
1

1. Disasemble? but that could be a lot of work, clean out as best as you can and hope for the best?

2. I would presort the plastic by type and then color.

3. Non-stop. (depends on the engine)

4. Jaw coupling (as your image), allows for some misalignment.

helper
20/03/2018 at 03:18
0

Thank you @dbougas !

You can do anything as long as you have the will to do it 🙂

I edited the recent post (the one with the image), did not have the time to complete the update erlier.

helper
19/03/2018 at 21:18
1

An update.

Assembled the “Optinova” shredder unit, had some problem with the shredder jamming, spent some frustrating hours solving it. (do not rush and try to assemble the shredder unit fast, have patiance and take your time, when tighting the bolts, check if the axle spins, and make sure your bearings are the same (I had 3 slighly different bearing housing) )

Because I am doing this on my spare time, I usually only got like 1-2 hours each time. And because of the shredder unit problem, I did not get so much done as I hoped for.

Aligned the shredder unit and motor/gearbox on the frame, got some power tool failures.

Now there is the hopper and the electric part left to do.

Slowly getting there.

Attachments:
helper
15/03/2018 at 14:26
6

Hey and welcome @qingdaolan !

Thats a great price so far 🙂

Is it stainless?

Keep us updated with your progress and feel free to ask if you have any questions.

helper
13/03/2018 at 15:28
0

@davehakkens
Yeah, I noticed that, and was about to write about it, but it is working now and I edited my post 🙂 Thank you.

helper
08/03/2018 at 00:33
0

Yes, the fixed side will be 149mm (14 small knife and 13 large knives) and the rotating side will be 148mm (14 knives and 13 spacers), in theory.

In reality, the 5mm metal sheet that they cut the pieces from varies a bit, could be 4.8-5.2 or more/less, same thing with the 6mm sheet.

I just sanded my pieces quickly and made sure that the edges was clean and then I assembled the shredder without problems.

helper
06/03/2018 at 23:20
0

Fixed side;
Small fixed knife (6mm) then large fixed knife (5mm) and repeat.
Rotating side:
Rotating knife (5mm) then spacer (6mm) and repeat.

So one 5mm rotating knife fits into a space with 6mm.

helper
06/03/2018 at 15:59
1

Today I went and got the adapter for the motor, that the engineers from Optinova made. And it fitted perfect (awesome when something fits perfect and without problems on the first try 😛 )

Now I just need to reassemble the shredder unit, and then I can put the motor, shredder and frame together.

Slowly getting it done. 🙂

Attachments:
helper
06/03/2018 at 13:09
0

@anna-roos

There are many members from the nordic countries here, but I am unsure if any have completed some machines yet.

For my part I can let you know if I manage to get some machines done within a reasonable time.

In reply to: Hejsan From Sweden

helper
06/03/2018 at 13:07
0

Hey @feffinir !
I live on Åland (between Sweden and Finland) and speak Swedish. Currently building the shredder.

In reply to: Extruder Creation

helper
05/03/2018 at 23:49
0

Haha, awesome!

helper
05/03/2018 at 23:08
0

Hey @drakula16 and welcome!

The difference with using or not using stainless steel is that stainless is a bit harder (not a big issue), and it will not rust (bigger issue if your material that you are shredding is wet).

The motor is usually the hard part, finding the right one to a good price.

The best is to find a motor with reducer that gives you about 60rpm +/- 10.

In my case I did find a motor, and a separate reducer.

You can also use a chain drive.

Good luck with your build, and keep us up to date 🙂

In reply to: DIY Sheet press

helper
05/03/2018 at 05:56
3

Exciting!

Make sure that the bottom side is sturdy so the pressure will be equal, so the car jack (with one pressure point) will not bend the bottom.

helper
05/03/2018 at 03:01
0

Just awesome!

helper
03/03/2018 at 09:51
0

@anna-roos
If I had some machines ready I would be able to show them, but I am still building, and I will not be done to mid-march.

May I ask, showing for what?

helper
02/03/2018 at 12:54
0

@anna-roos

When? 🙂

helper
01/03/2018 at 11:25
2

Wow, good documentation, keep the good work up 🙂

helper
27/02/2018 at 16:51
1

Nice!

helper
27/02/2018 at 16:41
6

Hey thats cool, what did it cost to build?
Do it work with all the recyclable plastic?
Or even with other plastics?

In reply to: Masks

helper
27/02/2018 at 07:51
0

Well, for the shredder I would guess that you should use a particle filter, and for the extruder, injector and compressor I think you should use a gas filter. I would recommend using a half mask (thats what I am using).

Something like this;
Halfmask
And filters;
Particle filter
Gas filter

But you could just use good ventilation with most of the termoplastics..

helper
26/02/2018 at 06:51
1

M8 🙂

I edited the list..

helper
25/02/2018 at 18:11
2

This has been asked before.
List of hardware required for shredder

Here is the list on the nuts and screws (only for shredder 2.0 unit assembly) that I used.

Screw M10 (countersunk) x 30mm – 4pcs
Screw M8 x 25mm – 8pcs
Nut M10 – 6-8pcs (8pcs if using threaded rod)
Nut M8 – 8pcs
Washer M10 – 6-8pcs (8pcs if using threaded rod)
Washer M8 – 16pcs

Threaded rod/bolt M10 x 20cm – 2pcs

Instead of a threaded rod, I found 20cm long screws that I used, the nut can be nylock nuts, and the washers are optional.

helper
24/02/2018 at 15:57
2

The frame for the Optinova-shredder is more or less done, some paint and I need to change the bracket on the shredder unit. Now I am waiting for the guys at Optinova to lathe an adapter to the shredder-motor. Will be starting on making the hopper for the shredder.

Attachments:

In reply to: Damage machine

helper
22/02/2018 at 13:00
1

Damn, that had to been some force to bent 3+3 mm steel that also was welded.

What where you trying to shredd, @ahmednassar ?

In reply to: Types of plastic

helper
22/02/2018 at 10:23
4

About identifying plastic types.

This is from “User’s Guide to Plastic”, a book that is used in plastic related education.

Identifying plastic types by burning.

Material – Type of fire – Odor
ABS – Yellow flame with black smoke, drips – Very characteristic for ABS
PA-Nylon – Blue flame with yellow top, melts and drips with transparent and very fluid drops – Burnt wood
PC-Polycarbonate – Yellow flame with smoke, melts and chars
PE-Polyeten – Blue flame with yellow top, transparant drops that burns – Candles
POM-Acetalplastic – Blue flame without smoke – Ammonia
PP-Polypropen – Blue flame with yellow top, swells and drips – Sweet/Wool
PS – Yellow flame, with black sooting smoke – Citygas (?)
PVC – Yellow flame with green edges, softens – Sulphuracid
SAN – Yellow with black sooting smoke

helper
21/02/2018 at 09:37
2

@dbougas

Yes

from wikipedia;

low-density polyethylene is typically 105 to 115 °C

I think this info exist in an other post, about plastic materials in the forums.
Here is one: https://davehakkens.nl/community/forums/topic/types-of-plastic/

Sorry jegor-m for hijacking your post :S

helper
20/02/2018 at 16:50
0

Had the jaw coupling rebored. Getting closer and closer to finishing the shredder.

Attachments:
helper
20/02/2018 at 16:22
0

Hello there @lexuz and welcome!

We got some estonians here, @jegor-m with Precious Plastic Estonia.

As for recyling cable isolation;

If I understood it right there are 3 common types of plastic used for isolation in electric cables PVC, PUR and TPE.

TPE could be recycled
PUR can be recycled chemically
PVC (most common in cable isolation) is recyclable, but when heated PVC can produce dangerous fumes.

Viewing 30 replies - 1 through 30 (of 129 total)