The TROUBLES with TPU...

[Kurt The 3D Printer GUY!!]

So - first - I will admit - I have done Very, VERY Little printing in TPU over the years! Even during my time at Essentium and VisionMiner - I printed very little TPU. Even at VM - there was one project with this Flexible PLA - that was like TPU. But, that's about it...

And, as folks already know - I've been exploring TPU a lot more lately, printing it on my Elegoo Centauri Carbon - for a couple of my personal projects. 

Obviously, since it is VERY Flexible - it can cause printing problems that you do NOT have with Regular filaments. In this case - it was obvious that a tall skinny part was Wiggling more and more as the print job progressed - and then it went totally FUBAR near the end of the print job:

So, in order to potentially resolve this one issue - I'm changing the handle to be more like finger holes - so, the taller the print gets - it reconnects that handle to the main Koozi. But, as I was watching it print - I see another issue (besides the VERY Extensive Stringing) - which is that on the over hang area - even though I am following the rules and making it like 45 degrees - it's Curling up - as you can see in this pic:

I'm wondering if maybe it's cooling to quickly - and I need to turn to the part cooling???

That last pic of the unit is purely a Test part - as I'm only printing PART of the Whole unit. And - no - it's still printing - I just took a pic mid-print. 

I'm happy to say it finished printing. The curling up did NOT cause a fatal problem. Here's the finished test unit:

But, yeah - I'd love to try and minimize the stringing...

-K