08. Into mechanics

So the basics for the Arduino + CNC shield + G-code are under control to get the stepper motor moving. I now need some mechanical thing to move.

The following video is good source of inspiration:



Quite smart. Yet my constrains are different from a CNC: the axis should move faster and they don't need as much strength. Still the linear guidance could be the same...

After browsing the Internet for almost a whole week end, I end up with the following ideas:

1. Linear guidance: 
1. Use an aluminum T profil + 624vv bearing on one side
2. Plain bearings as wheel on the other side
2. Linear motion: use toothed belts by the meter + pulley + clamps

Suppliers found:

• Bearings; on ebay for around 0.50 EUR per bearing
• Toothed belt & co: http://www.tridistribution.fr/fr : it's way more expensive and I still need to get some details sorted out to choose the right features.