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Appendix C: Hardware

Buying hardware from us

Getting all of the hardware on your own can be tricky because the parts you select may not fit perfectly. That's why we sell fully-assembled Knobs. Here's why that's great for you:

  • Everything is guaranteed to fit together perfectly
  • Everything is guaranteed to work as intended
  • You'll end up saving money - probably quite a bit of money - by not spending on extra parts

Your call. You'll sort it out.

Getting your own hardware

This guide was a bit light on detail in the other sections, and that's because the hardware has to conform to many specifications. They'll all be listed here.

First, a complete list of all the hardware you'll need:

  • #2 1/4" screws, x2
  • 6mm diameter x 2mm thick magnet, x2
  • 6705ZZ bearing
  • 4x friction pads

We'll be going over all of them in detail. There will be mentions of critical specifications; if you're going to be sourcing your own parts, you must get parts that conform to the critical specifications. If you go off-menu, the parts will not fit the way that we intended when we designed the Knob. That might mean that your Knob doesn't work.

Let's get cracking.

Screws

Here are the critical specifications:

  • #2
  • 1/4" length

Magnets

Here are the critical specifications:

  • 6mm diameter
  • 2mm thickness

6705ZZ Roller Bearing

Here are the critical specifications:

  • 6705ZZ bearing
  • 25mm inner diameter
  • 32mm outer diameter
  • 4mm thickness

Friction pads

Here are the critical specifications:

  • Circular shape
  • Up to 3/4" diameter
  • Up to 1/8" thickness
  • Non-slip