ESUN ePAHT-CF bridging issues
I'm able to print just fine but bridging is a pain with eSUN ePAHT-CF.
Even overhangs are fine without any fan at all but this bridge in the photo below was printed with 25% fan, it didn't help much at all.
I'm using a 0.5 TC nozzle, filament is properly dried for days @70°C and then three hours @90°C right before printing.
I tried 30mm/s bridging speed, 60mm/s bridging speed (the filament profile is limited to 10mm³ anyway) but nothing helps.
Even though it's just a single 5015 fan for cooling, I don't feel comfortable ramping it up to 50% for a PA-CF filament, although that is what I'm going to do now.
19 Replies
I looked at @MFBS profile and he's using 25% fan all the time. CPAP is probably way way more powerful than mine
So ramping fan up may be a solution? Or going down in temperature? Currently printing at 270°C with as mentioned 10mm³ limit
Chamber temperature is probably something 30-40°C
50% fan permanently seems to help bridging and causes warping :hiding:
50% permanent fan
Well....
Will try to set bridge flow to 0.8 instead.
I don't use 25% fan all the time with ePAHT....that would decrease interlayer adhesion. I use the minimum fan necessary. Bringing and overhangs with any nylons is always challenging.
I will post up my fan settings later when I am near my computer.
Thanks for helping me out. There are just a handful of people out there who print it
I has bridge flow set to 1 and probably 0.8 as set in your SS profile will also help. More fan doesn't.
I use Orca Slicer these days. Thick riding helps sometimes and other times causes more issues. I have never found great bridging options.
This is my first and probably last roll of eSUN ePAHT-CF. I also bought a couple of Siraya PPA-CF. Does it have similar bridging issues?
Look at that. 100mm/s and 0.8 bridge flow
That is almost perfect 🙂
25% permanently. Remember, single 5015
Do you have thick bridgeing on?
Yes
BTW I can confirm after a meeting with Lehvoss today(suppliers of the raw pellets for that material) the ePAHT-CF is actually PPA-CF.
Cool, good to know. That explains why it is different from most of the other PA-CF filaments
Lehvoss say they have now further improved on their PPA and it is used now by Bambu Labs and several of their other partners.
Do thick bridging and 0.8 bridge flow cancel each other out to some extent?
I didn't test that. However bridging seems to be okay now. Will probably print some stuff either this or next week again
Your bridging looked great.