FAQ's

Yes!  The vast majority of our first shredders are still in service.  While our equipment has evolved, improved, changed…we still produce the parts to support older generation shredders. In fact, the guy who originally built the shaft for your 1985 shredder is most likely the same person who will build your replacement today.  (Thanks Jerry!)
 
One other note – we are the designers, engineers and manufacturers of our equipment. We are not ‘assemblers’ of outsourced parts. Your shredder was born here. We know it. We try and keep track of all of our children.

For more Single Shaft Shredder For Saleinformation, please contact us. We will provide professional answers.

– How many people have actually built the shredder?

You will need to setup a real poll if you want to get an answer, surveymonkey or google forms should do the job.

– Can you please share how it works for you? we need benchmarks (does it get stuck? does it chew everything or not? is it slow? what motor are you using? problems you had with assembling the shredder body? etc)

I have not tested my shredder yet because I’m still stuck with the assembly process. The laser-cut parts didn’t turn out as I expected.
I saw both of your videos and noticed that the plastic is not going around the shredder blades, so I’m assuming the shredder is accumulating all the shredded plastic between the blades and the grill until there’s no more room for more plastic and it gets clogged. Your motor looks powerful enough so I don’t think it’s a lack of torque. Have you tried removing the bottom grill and testing the shredder for a while? The grill might be too close to the blades, causing the shredder to get clogged.

– Q: Anyone know a way to measure the exact KW and Nm output of the motor?

If you dont have a Newton-Meter or Torque-Meter, you will have to trust on the specifications of your motor and gearbox.

– is it the shredder that is not well assembled?
I am currently experiencing all the problems you described. I sent the drawings to a laser cutting company, and the parts they sent me looked awful, not even close to Dave Hakkens’s shredder pieces. I assume this is because he cut his parts with a waterjet machine which makes cuts much cleaner than a laser cutter. I cleaned the parts and the hex-holes of my blades are 1mm bigger than the Hex shaft on every side of the hexagon.

– Q: can the parts wiggle (move) a bit or they must be perfectly stiff?

I believe that it should not be a big deal if the blades wiggle a little in the same orientation as the shaft rotation. However, if they move sidewise, the blades may hit the shredding fixed knifes and break your machine.

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– Q: what should the laser-cut parts look like? can we cleanup the rounded parts?
Before cleaning
After cleaning with an angle grinder

– is it an alignment problem between motor and shaft of the shredder?

Now that you mention it, it is very likely that this is your problem. Adding rubber underneat the motor is not a good idea, the motor should be fixed rock-solid to the frame. When your shredder is trying to shred hard plastic, the torque increases. The rubber allows the motor to have some movement, which causes the motor and the shredder to lose alignment and locks the rotation.

– Q: is it normal that the shaft and motor wiggle a bit when activated (and not screwed to the table), or is that a sign that there is something wrong?

No, it is not normal. The only visible movement when the machine is turned on, should be the Hex shaft spinning smoothly. Any “wiggling” indicates an alignment problem or bend shaft. Make sure that your Hex Shaft and the Motor Shaft are perfectly flat. Turning the machine ON when it was not fully aligned and fixed to the frame might have twisted/bent the hex bar or the motor’s shaft.

– Q: @paulfreed what is that black thing you have between your motor and the shaft of the shredder? is that a silent block of sorts? any suggestions?

I am not paulfreed but I can answer this. That “black thing” is an “Oldham Coupling”. The one you have is a fixed coupling but there are several other coupling options. For instance, I decided to use “Jaw Type Couplings” like this and this

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