Roll was dried prior to running these tests.
I started with standard BB PET-CF profile and ran a test block, followed up with incremental changes to the wall speed, print temp, bed temp, cooling. I changed one parameter at a time, then compounded the changes, regardless all the test blocks look the same.
@R3d-Five Thanks for the reply.
So drying helped? I dried it for 15hours/ 70c since thats all my drier will reach with very little change in weight… Maybe I need to dry more.
Regardless, thats a lot just to get decent quality. BB PET CF was spot on, I am thinking to just pay the extra cost and have a filament I know works.
I can’t speak for PET, that’s outta my wheelhouse. If their TPU is anything to go by it will help. Although sounds like you’ve already dried as much as I dried it.
They have a good name in resin, so you’d think they could manage filament. Maybe not. I would stick with BL.
The high temp materials are very difficult to dry with normal filament dryers. If you do the math on it, the dry times needed for some PA’s, PPS, PETs, PPA’s, etc, is enormous for dryers that can’t reach 80C for particularly wet filament. Depending how wet, it could take days, to get enough moisture out at 60C (normal drying temp). At 70C, its still a significant amount of time higher than the suggested time at 80C or 100C. The good news, most companies manage this relatively well so you shouldn’t have to do the marathon dries, but on occasion, you will run in to this problem.
This is why it is super important that the manufacturers manage moisture well. Its not reasonable to keep things perfect for 100% out of bag printing, but keeping the moisture low enough to be easily dried out is particularly useful for these high temp materials.
Might not look that fantastic, but according to "my tech fun"s test, this is a fantastic filament, layer strength is really, really good at 45,8 KG break load (same as BL pet-gf).
If you need mechanical parts that need to be very strong, heat resistance and no fumes that’ll kill you, for me this is the goto filament.
I think it has a higher carbon content which makes it less look good compared to BL pet-cf.
I am unable to even run this filament currently on my X1C. I’ve tried various nozzle temps above the minimum recommended, and I can’t get it to extrude. It’s pretty high-tension when pulling the filament back out of the machine so maybe it’s something to do with that
0.4 nozzle, max flow test show ~25 max so set to 21 in profile.
1.00 extrusion ratio
99.9 shrinkage
260c first layer, 270c for rest of print, then top 4 layers I ramp to 290c.
10%, 100%, 100% part fan.
Slowdown for overhangs to
50
40
30
20
15
Bridge at 15mm
Chamber heater off.
Frostive Biqu plate and 55c bed temps.
Ironing comes out flawless at 80mm/s 40% flow.
Prints like a dream, have gone through multiple 2.5kg rolls.
Your Siraya PET-CF is wet, that’s why the rough walls. Dead giveaway. Dry mine at 80c for 24 hours in Space PI x4, then transfer to SP2 container and keep at 70c while printing after initial dry.
. Can print straight out of bag as long as it goes directly into running 80c dryer while printing.
