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helper
20/02/2018 at 10:04
4

@dbougas

Sorry next post is from Finland 😛

Some fast facts about PE

HDPE:
It is stronger and harder than LDPE.
It is more rigid than LDPE.
The density can range from 0.95- .97 g/cm3.
135°C (higher melting point compared to LDPE).

LDPE:
It is less strong and weaker than HDPE.
It is more flexible than HDPE.
The density can range from 0.91-0.94 g/cm3.
115°C (Lower melting point compared to HDPE).

So I guess the melting point temperature would be the most inconvenient..

helper
19/02/2018 at 18:21
0

@andyn

I was looking at the max bore sizes, and took the ones with 19 and 24mm (L070 & L075) just to discovered they all are 6 & 8mm. So they need to be rebored.

Yeah, the torque rating do not make much sense.

Got the couplings today, and will rebore them and try them.

helper
19/02/2018 at 10:41
2

@jegor-m

How do you guys deal with the rubbery layer inside the bottle caps?

You mean the closure lining material? Here they are not so common anymore, but I do remember them many years ago, are they not easy to pick out by hand?

Also good to know is that the lining should be LDPE.

helper
19/02/2018 at 09:23
1

@fabirihotmail-com
Oh now I see! Thanks, I will need to do that with the Optinova motor, but luckily the guys at the Optinova workshop said they will lathe one for me 🙂

I found the jaw coupling on eBay https://www.ebay.com/itm/L-Jaw-Couplings-Complete-With-Element-Insert-Lovejoy-Couplings-L035-L050-150/162579511138?hash=item25da7e7762:m:mwB5sj68wFzCOfZCzhbs96Q

helper
18/02/2018 at 11:37
1

Thank you for the suggestion @fabirihotmail-com .

The jaw coupling I ordered costed just under 40€ for 3 sets, and also they allow for some misalignment. 🙂

helper
17/02/2018 at 17:55
1

@ivanshtiru
You can find the blueprints for the machines in the download section here on the website, as for the frame, you might have to improvise a little depending on what motor you have.

helper
17/02/2018 at 10:34
0

Small update, have ordered the jaw coupling for my shredder and gotten the motor with reducer from Optinova.

The motor is a used one in good condition from Lenze.
The interesting part is that it is only 1kW at 400v 87Hz, but gives 262Nm @ 35rpm.

The engineers say it should work…

Also sketched up the frame with shredder and motor (without electic box, hopper and shelves) during my lunch.

Attachments:
helper
17/02/2018 at 10:12
0

@xxxolivierxxx

Got some plans (-ish) for them later on 🙂

helper
16/02/2018 at 17:01
2

Nice! Great that you got it sorted out 🙂

In reply to: Extruder Dies

helper
15/02/2018 at 21:04
0

bigger or more holes and watercooling…

helper
14/02/2018 at 17:49
1

Hey @annobanno !

I saw your message a little late, I do have a extra set of laser cut parts.

helper
01/02/2018 at 15:50
2

Awesome!

helper
01/02/2018 at 15:43
0

Hey @scottydoesntknow !

I am building the shreder atm, and I also listed the basic tools that you would need, it is here in my topic Precious Plastic Åland scroll down to see the post about it (got two with the tools needed)

In reply to: ANYONE KNOW???

helper
29/01/2018 at 23:57
2

lathed?

helper
29/01/2018 at 16:02
0

Yes @jegor-m , I do use them 😛 I want to be able to listen to my kids in the future 😀

The motor I am using is a 3-phase 2.2kW with 2820rpm and a 60/1 reducer, so that leaves me with about 47rmp on the shredder. I found these on the scrapyard and it cost me about 30€ I think, need to connect the motor and reducer somehow (think i will be going for the idea Dave used to connect the extruder and motor (first image), and then a jaw coupling for the shredder and reducer (second image) ).

I do not have any plans on making an interchangeable system, because I got a bunch of used motors and reducers.

But if I would find an suitable motor with reducer and a VFD, then I might look into the option on trying a interchangeable system.

And as for the tools, it is for others that are getting started and need to know what to get/buy. 🙂

Attachments:
helper
29/01/2018 at 04:51
1

Okey, so this hold up was a bit longer than expected, but now after some house renovation, broken sewer pipe and a surgery, things are starting to happen again.

After some days fighting with faulty equipment and tools, I finally manage to weld some frames (first image).

Also I will list what tool I used (second image).

Angle grinder (grinding disc and cutting disc), measuring tape, L-square/set-square, wire-brush, (cinder) hammer, welding machine (Arc-welder/stick welder) and of course safety equipment (googles, ear protection, gloves, welding mask.

Attachments:
helper
26/01/2018 at 01:59
2

Nice work, I like your documentation.

helper
24/01/2018 at 22:52
2

Aggressive cutting?

What do you mean?

Got a video of your shredder shredding?

helper
23/01/2018 at 15:58
2

This is a good topic, I know there is at least one more topic about this somewhere. I am all in for helping develop a washer..

Oldstyle handdriven washer 😀

Attachments:
helper
23/01/2018 at 01:44
0

Bem-vindo ao Precious Plastics, #xande !
Você começou a construir o triturador?
Posso perguntar onde você conseguiu as peças cortadas a laser e o que custou?

Welcome to Precious Plastics, #xande !
Have you started building the shredder?
May I ask where you got the laser-cut parts from and what did it cost?

In reply to: Pete #1

helper
22/01/2018 at 02:39
2

Reason for the bottle water is the arsenic levels in the water naturally are way to high for some people.

Hehe, and some other people can take higher levels?

Just joking,

I acctually have the same question, since I have lots of PET, and no idea to make good use for it..

helper
11/01/2018 at 15:46
3

Here is the list on the nuts and screws (only for shredder 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
11/01/2018 at 01:04
0

Hey @marcusinnovate !

When I was going to assemble the shredder I had the same issue, (and I did not find the answers in the download kit (maybe it is updated now) )

I remembered that I did a note on how many nots and screws etc, I can check it up when I get home from work.

As for the tools, I made a list of the basic tools that I needed to assembe the shredder unit. You can find the list in this topic; Precious Plastic Åland (basic tool for shredder assembly) scroll down for the list.

Hope it helps some!

In reply to: Foot powered shredder

helper
09/01/2018 at 22:35
0

Add flywheel 🙂

helper
09/01/2018 at 22:33
1

Hello @masontomko !

As @clementhempel wrote, cutting the blades with an angle grinder is probably the cheapest way, but there is some work into it. Cutting these amount of 5-6mm steel is somewhat hard and takes some times, I was thinking on doing it, but then I joined the group order, because the price and time.

Still, when I have completed some projects (machines) and got more time on my hands I will try to cut the blade with an angle grinder.

helper
17/10/2017 at 17:35
0

Great idea!

In reply to: One motor for all …

helper
13/10/2017 at 15:08
0

A 2kW motor would be more recommended (for shredder). Thou depends on the reducer..

helper
13/10/2017 at 15:07
0

Welcome @arnie 🙂

helper
09/10/2017 at 15:49
1

Thank you @katharinaelleke !

It is a really slow going atm, about to make the frame, but we are about to start installing floor heating in the house, so my workspace is filled up with other stuff right now.

Yeah, you do not need advanced Tools to asseble it, thou it would help making it easier 😛

In reply to: woodchipper?can i

helper
26/09/2017 at 23:03
0

@dianag

shredder build IDEA

This topic might help you..

Viewing 30 replies - 31 through 60 (of 129 total)