MINI CNC VER 2 - PART 2

thingiverse

Second part of a significant project is now underway, building on the foundation laid out in Part 1 (https://www.thingiverse.com/thing:3209976). This time around, focus shifts to creating the Right arm, an essential component that can be referred to as a pillar or any other suitable term. A crucial element of this right arm is the Y-axis slider located at the bottom, designed with some distinct differences compared to its counterpart in Part 1. The design's complexity and functionality are heightened by this unique feature. A key component integral to the motor's operation is the Motor Case. This case has been specifically engineered to accommodate DVD stepper motors that have been removed from their drives. To optimize the motor's performance, the axle holder was completely eliminated, allowing for the axle to pass through ball bearings nested within the case itself. The motor case is designed to fit snugly around a 15mm diameter motor, accommodating a 3mm axle. However, some motors may have a 3.5mm axle, necessitating a replacement of the bearings with new ones that have an outside diameter of 8mm and an internal diameter of 3.5mm, along with a thickness of approximately 4mm. For those who do not possess the correct bearings, it is crucial to redesign the case entirely; fortunately, the mechanism driving the belt remains unaffected by this change.