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Building a shredder, Slovakia, Europe

This topic contains 6 replies, has 3 voices, and was last updated by  Martin Vasko 1 year ago.

Martin Vasko hugonator

Building a shredder, Slovakia, Europe

28/05/2018 at 14:04

Hi guys, finally im in process of building a shredder.

For now, i have only shredding mechanism done.

What i needed as a material:
laser cutted parts
2x bearings
1x shredder
joining material, screws
drill for counter sink
brushing paper ( because part were pretty rough and not able to put together)

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28/05/2018 at 14:07

Shaft was little bit bigger the bearings, so this is how it looked like at the first try.

We needed to brush shredder a lot, even when the difference in dimensions was tiny.

04/06/2018 at 00:46

Hello Martin

My name is Renato and I´m from Brazil.
I´m planning to start the assembly of the schredder in the next months and I would like to ask you some questions.
I´m concerned about the lasercutting tolerances of the schredder pieces since every company around the world have different cutting tolerances.
Did you use the latest version of the .DWG lasercutting drawings?
Did the assembly gone well? Did the pieces fits well? Did you do some mechanical adjustments aftes the lasercutting?
Could you share your experience with me?

Thanks in advance
Best regards


04/06/2018 at 02:54


1.Did you use the latest version of the .DWG lasercutting drawings?
1.a. I used laser-cutted parts from Katharina from Germany. It was group order cca 25 sets. So i cant tell you exactly.
2.Did the assembly gone well? Did the pieces fits well? Did you do some mechanical adjustments aftes the lasercutting?
2.a Assembly was pretty challenging. Lot of dimensions and shapes of the parts were pretty not in tolerances. So i needed to brush surfaces of all parts to make smooth assemly.
Since laser is making radiuses, not 90 degrees in corners on holes for example, i was not able to assembly many parts together, so again i needed to brush corners in order to fit into other parts as a puzzle, since whole construction i created in “puzzle” style.

I needed do use driller for making 20mm(radius) counter sink for holes for bearrings screws.
I needed to brush cylindrincal parts of shaft in order to fit into bearings. ( I ordered shaft+bearring from Czech republic, other laser-cutted parts were from Germany.)
Another problem was lenght of hexagonal part of shredder. Its not accurate at all. I needed for fix many, many small intolerances, to assemly everything smoothly, and tightly.

So we needed to find many alternative solutions for shredding box, to make final version of shredding box.

It was my case, but if you order more accurate parts, also if you order accurate dimensions of shredder and bearring, you can save lot of hours of work and fixing. But in my case it was whole 2 days of assemling only shredding box to make everything as it should be.

16/04/2019 at 17:04

Update about the shredder.

Finally i managed to find motor, transmission, a clutch.

This is how it looks so far.

16/04/2019 at 19:35

be very careful with this sort of direct coupling, i saw a few times a broke drive shaft

25/04/2019 at 23:50

Thank for your info. I hope it will be able to transmiss the power from the motor safely.

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