It’s been a while since I started my Shredder project but didn’t have the time to actually finish it, but I can now say that my shredder is 99% complete (I say 99% because I have not attached the power cable yet, but I already have it)
Here are a few tips:
*Don’t use a motor that is less than 2hp. I purchased a 1/2HP motor and it does shred plastic, but the threaded part of the bottles makes the motor halt. A 2HP or more motor should not have this problem, and if possible, get a triphase one.
*I did not want to buy a perforated sheet of metal because I only needed a small square piece and the hardware store would not sell the amount I needed, so I grabbed a perforated metal sheet I found in an old speaker and it worked just fine (see pictures below)
*On my Shredder’s frame I soldered 4 small pieces of square tube that I can use to put a piece of wood, that will serve as a base for a trash can that will collect all the shredder plastic
*Get a DPDT rocker switch, that will allow you to reverse your shredder motor if the shredder gets jammed
Here are a few pictures:
thank you for the info @xxxolivierxxx!
very usefull for me that i’m starting my shredder too.
in your research, does the 1hp motor worked good? because as the specifications it has to be like an 2,5hp. i was looking for one of those, but they are pretty expensive. i was wondering if a smaller engine would work too.
You’ve done a great job building this. Ever thought of a glass window in the hopper to see what is happening inside?
I’ve come to that part of shredder building where it does the job, but can do better by adding the net under the blades.
Does your setup use the holes for the net, or you attach it in another way?
And how easily could it be taken off?
@joseeduardofernandes Correct, mine is 1/2HP and it has troubles shredding bottles, that’s why I suggest 1HP or more
@z11aalex if you share more details we might help you decide if that’s a good motor, details such as torque, RPMs, horse power, monophase or triphase, might help to give you a better response
@sculptureclash Thank you. Mine is a 110v monophase motor, it works at around 1430rpm in 110v mode but the reducer slows it down to around 60RPM. The voltage of the motor does not really matter, what matters is the amount of HP/Torque and RPMS.
@jegor-m Thank you. I don’t think I need a glass window, I usually guide myself by hearing the motor shred and based on the sound (which is loud AF) I can tell if all the plastic was shredded or if the motor got stuck. Yes, I added a grill under the shredder. In the original design from Dave, you can attach and detach the grill, but on my shredder, I just soldered it to the shredder frame.
I’ll upload a video shortlyToggle replies
I live in Ivory Coast and I am interested in the construction of machines. I would like to have the parts for the shredder crusher and the electrical equipment of the other machines.
If you have ideas or proposals (cost, transport …) to give me please contact me at the following address: email@example.com
Thank you in advance for your help.
Hi Oliver i think your shredder is swell and thank you so much for sharing the information with all of us . There’s a lot to learn and i’ve been going in the forum to find the proper info on a suitable motor , motor reducer and VFD before i proceed .
Motor spec: (we have confirmed to go with this)
> 2 pole
> need to be delta connection (for VFD)
Motor reducer spec:(unsure whether what other info i need for this)
> compatible to the above motor ?
> to run on 70 rpm
> able to change direction ?
> Nm ?
VFD spec:(3Phase to 1Phase connection)
> 230V , 2.2kW
Is this necessary i am unsure of this too . VFD is required to change from an industrial socket to a home plug wall socket compatible.
Thank you again I totally appreciate it !
The motor you posted looks pretty good, but I encourage you to get a pre-assembled combo of Motor + Reductor to ensure that the reducer you get fits your motor, or at least try to buy both parts from the same seller/place to test that they fit together.
The reducer you need depends on the motor RPMs, the resulting RPMs of the reducer should be around 60 or 70, anything faster might actually melt the plastic due to friction, instead of shredding it.
Most reducers rotate in both directions, in case you find one that doesn’t, I’ll recommend to look for a reducer that does, since having backward/forward rotation is a must-have feature in case you ever need to unclog/unstuck your shredder.
Yes, a coupling is necessary. What type of coupler? Anyone that fits your reducer’s and shredder’s shaft: Universal, Oldham, Jaw, etc…Toggle replies
Que mae!? ^
Viejo, en Infesa (Cartago, Curridabat, entre otros) tienen motores de segunda con un mes de garantía, y ahorita están en liquidación.
Pegue una ojeada en el site:
Yo ahorita estoy comenzando el proyecto junto a un compa, por ahora tenermos listo las partes cortadas y estamos buscando ya las demas partes.
Donde fue que conseguiste el reductor? No he averiguado si ahí mismo en Infesa tendrán.
Mae por cierto, que tuanis le quedó la maquinilla!
Pura vida loco!Toggle replies
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