This is it! We have our “perfect” movable Bucky with joints. It only took us one… OK two more tries. Read below to learn how we managed to achieve what could be the most impressive mascot ever produced by 3D printing.
Fourth Bucky Prototype (Bucky V4)
Printing Parameters (Ultimaker 3):
Print Material – PLA
Support Material – PVA
Layer Height – 0.1 mm
Infill Density – 25%
Number of Shells – 2
Joint Gap – 0.2 mm
The only issue we had with our previous version of Bucky was the torso and right arm seemed a little too loose. To remedy these issues, we removed the neck from the ball joint on the right arm and decreased the gap between the legs and torso of Bucky by 0.2 mm (still leaving a 0.2 mm gap). See the image below for the slicer view.
Figure 1: Cura settings for Bucky V4
Finally we reached the ideal compromise between assembly strength and joint motion. The final product had quality joints and was produced in roughly 13 hours.
We made one more slight change (Bucky V5) by removing material from one of the arms that would protrude above the shoulder when the arm was swung up. You can see this in the two pictures below.
Figure 2: Top: Bucky V4 with material protruding above shoulder
Bottom: Bucky V5 with the material removed. This is our final Bucky.
Thank you for following along and reading all of these posts. We will create one last post were we combine all of these posts into a lessons-learned summary for printing joints with FFF.
Team Bucky