tonymake

starter

23/05/2017 at 19:20

Other pictures…

trent-robertson

starter

25/05/2017 at 19:44

Good work @tonymake! How did you make them? You said you were sore from grinding– is this all from a grinder? Or just grinding the welds?

jegor-m

warrior

26/05/2017 at 15:53

@tonymake, this looks nice, well done.

I am about to start assembly of a shredder as well. What will you put under the shredder? Could you possibly upload a photo of that piece as well?

tonymake

starter

26/05/2017 at 17:37

To Trent:
I made it by laser cut (my friend have a very big machine)

It was very hard to grind the various pieces because the project needed 5mm and 6mm thicknesses … but my dimensions were thicker. They should have a thickness of 149mm … instead I had 153 !!! I have sanded well 3mm of steel! Twice!

tonymake

starter

26/05/2017 at 17:43

To Jegor:
I do not know yet. But I think I would build a 25 / 30mm iron tubular frame. It should not be difficult. I have to find the gearmotor first … then build the frame … of the right size. As soon as I realize it, I will post some photos

tonymake

starter

28/05/2017 at 08:52

I finally found the way to power the shredder: I found an old hoist and I’ve eliminated everything I did not need. Still under construction. Look at the photos

z11aalex

starter

29/05/2017 at 08:00

@tonymake
Could you share some specs of your old hoist? I mean RPM and type of motor. I assume it has enough torque, but anyway, some specs would be of great value. Thanx.

tonymake

starter

29/05/2017 at 08:26

I’ve some problem uploading photos. .. pls wait 🙁

tonymake

starter

03/06/2017 at 17:16

@z11aalex
Hello, unfortunately on the plate of the hoist is only written: 1400 rpm and 2 hp.
But turning it by hand I saw that the reduction ratio is 36 or 37 … so the final shaft should be about 40rpm. Maybe there are few … but to get started okay.

xxxolivierxxx

hero

21/06/2017 at 03:49

@tonymake did you have any luck building your shredder? We would like to see some photos or a video of the finished machine 🙂

tonymake

starter

21/06/2017 at 07:39

Hi all, people,
Unfortunately i can’t upload pictures (server sayd i can’t 🙁 )
However you can see pictures in my google album: https://goo.gl/photos/pwUaB9SaTPEce7V4A
I’m near the end… but not finished yet

Bye bye

z11aalex

starter

21/06/2017 at 13:39

@tonymake

Congrats! shredder looks neat, nice pics. 2HP that’s roughly 1.5kW and 40 rpm that will bring you 358.10 Nm (https://planetcalc.com/1908/). I suppose you won’t have any trouble shredding plastic, although it will take time 🙂
Would be great if you can film the shredding process, in this way the community could grasp what is 358 Nm of torque can do.

tonymake

starter

21/06/2017 at 16:03

@z11aalex

hi..
precisation: from gearmotor to shredder i have a 30:21 chain reduction…. so (i think) it is near 57rpm and 250Nm torque.
teorically….!
keep in mind i have a very aged motor… i suppose it have a very low efficiency.
now i’m only testing it…
I tried shredding a few bottle cap
It reduces them shattered very easily.
Now I miss the top funnel, the sieve below, and the system to keep the chain tight.
I will keep you informed
bye Bye