Scara based 3D printer V3 details

Scara based 3D printer V3

Details:

• 100mm arms, designed to cover almost all mk2b heated bed, 
• 1/4 reduction ratio (gt2-16 teeth to 64 teeth)
• 608 bearings used for center axis
• 624 bearings for other.

Scara 3D printer v2 - fail

Short review - fail.

Aluminum tubes (od-8, Id-6) too weak, on a 30 cm distance twists for a 0.5 degrees along 30cm. 5mm threaded rod have the same problem.

Because of issues above printing results does not match target quality.

But, v3 is started.

My v3 ideas:

1) classic arm scheme

2) platform is fixed, printing block movable

3) smaller footprint -50x150x20mm

4) ability to convert to robot arm manipulator