Top Panel PTFE Pass Through double ECAS
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Slightly thicker ball part of the joint, with ECAS on both sides
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Model information
- Source
- Printables
- Category
- Other Printer Parts & Upgrades
- License
- Creative Commons — Attribution — Share Alike
After printing and installing the original ball joint design, I decided I liked it, but I ran into a small problem with it. I drilled the hole into the top panel roughly in the middle of the top panel. While printing, generally, the printhead will go around that center point (especially when printing higher, larger objects). This caused the ball joint to start rotating (clockwise or counter clockwise), the ptfe tube to start twisting, which in turn caused issues with the ptfe tube on the outside of the printer for me, since the ball joint doesn't limit this.
After a bit of thinking, I noticed that a ptfe tube can twist in an ECAS plug. To use that fact, and to make the ptfe tube part in the printer less ‘connected’ to the outside part, and thus able to twist on its own, I added an ECAS plug to the ball joint. Also increased thickness a bit to accomodate it, and increased diameter very slightly my printer was sufficiently tuned in to allow for tighter tolerances without risk of binding.
I also added a sacrificial support to the design. Print with the side where the ECAS mount appears to be nearly closed on the print bed (see zoomed in model screenshot, the sacrificial part is yellow, the balljoint is blue). You can remove that after printing, it allows the ECAS mount to be properly dimensioned without sagging and stuff.