Blueprint

3D Printed Single Shaft Shredder

A single-shaft-shredder, utilizing 3D printed parts!

Created by AstralGrandpa2.0 AstralGrandpa2.0 🚀

Tier 4

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Timeline

CAN CAN ⚡🚀 approved 3D Printed Single Shaft Shredder ago

Tier approved: 4

Grant approved: $50.00

AstralGrandpa2.0 AstralGrandpa2.0 🚀 submitted 3D Printed Single Shaft Shredder for review ago

CAN CAN ⚡🚀 requested changes for 3D Printed Single Shaft Shredder ago

Unfortunately, this project can only be approved as up to a tier 4 project. Maybe to make it more complex, try adding a system which turns the shredded 3d prints back into filament. I can also give you a $50 and you can pay for the rest.

AstralGrandpa2.0 AstralGrandpa2.0 🚀 submitted 3D Printed Single Shaft Shredder for review ago

AstralGrandpa2.0 AstralGrandpa2.0 🚀 added to the journal ago

Created Aluminum Extrusion Base

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Wow. What a journey.
It genuinely feels so amazing to have a project come together like that.
So I guess I'm just about ready to ship this project!?!
Here's what I've accomplished:

  • Created aluminum extrusion base for the shredder
  • Finalized BOM - finding off-the-shelf parts is quite hard!
  • Created mounts on the shredder for the aluminum extrusion

Some minor trinkets that will be modelled in (but I'm too impatient to ship):

  • aluminum extrusion mounts (These can be quickly modelled)
  • Hopper (literally a hollowed pyramid shape)

AstralGrandpa2.0 AstralGrandpa2.0 🚀 added to the journal ago

Brushed up CAD

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Screenshot 2025-10-10 134434.png

Brushed up the CAD!

  • Made it 3D printable
  • Connects by using m5 hardware
  • Made a Shaft Collar
  • Found Large Bearings (12mm ID) to use
    I also created a mesh/filter to enable consistent sized particles from coming through.
    Possible Roadblocks & Looking Ahead:

  • I don't think a 3D printed shaft will be strong enough

  • A funnel/feeder would be nice
    I feel pretty good about how it's looking.

AstralGrandpa2.0 AstralGrandpa2.0 🚀 added to the journal ago

Started CAD

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Made some decent progress making the CAD file for the shredder. I will go over some highlights and features.
Highlights:

  • I made an object that sort of looks like a shredder.
  • It took me a while to figure out the best way to model it
    • I am trying to use separate components, which is considered "good organization" in CAD
    • This will prove useful if I ever happen to want to make animations

Features:

  • I set up groups of 3 blades: this will displace the cutting, enabling less torque necessary to cut the material
    • This is visualized using different colors
  • There are also a set of fixed blades the rotating blades will be cutting into
  • The fixed blades are connected to the "base", utilizing the flexibility of 3D printing technology

AstralGrandpa2.0 AstralGrandpa2.0 🚀 added to the journal ago

First Steps, Planning

Well, it's shredder time!
Here are some goals for the project:

  • utilize 3D printing for design flexibility
  • shred stuff (pretty straightforward)
  • I'll try to utilize metal shaft/blades if necessary The goal is to make it intuitive and reasonable, with as many features as possible. I'm thinking modularity and safety, as well as easy incorporation into other systems (mounting!) Attached is an inspiration for the shredder blades! Screenshot 2025-02-15 181526.png

AstralGrandpa2.0 AstralGrandpa2.0 🚀 started 3D Printed Single Shaft Shredder ago