[ Closed ] Filament Extruder - Convert pellets to filament (Page 50 of 58)

mine ooze a lot even with a lower MFI than yours...

as OSP is Filastruder partner, i hope you have done extensive testing on their pellets no ? do you have any recommandation on speed on the solidoodle ?

if i understand well what you said (...Assuming you got GP-22 resin from OSP, the MFI is 4.8g/10min @ 230C, 3.8kg load.), i need to go above 200C on my solidoodle to print at normal speed ? (200C on solidoodle is already 230C in real life no ?...)

i fear to heat more than 200C on the solidoodle and burn my Peek extruder...

arfff... i have 20 lbs of pellets.... sooner than later, i advice to check this as if you put OSP pellets in your kickstarter award... you will get some "not so happy" return.....

yep... before my last test i clean all my extruder then acetone bath to finish the cleaning of the nozzle and deep inspection.

i put the filastruder filament and i can't pass 20mm/s without grinding... it was like the filament can't be melt enough fast to be extruded at the right speed, and as it was less hard, the motor can't push/force it faster without grindind (i try to change the force of the bearing that push the filament without success... i even miss step...)

i remove the filastuder filament and right put a voxelfactory filament (without any cleaning) and i can print at 70mm/s without problem (my normal speed , i push it to 120% /84mm/s with RH slider ... zero grinding... and top print)..

Can other beta testers chime in with their experiences printing Filastruder filament? What pellets, how fast did you print, any issues?

I've pushed 10+ lbs through my solidoodle at 60-150mm/s, 190-210C, primarily the SABIC resin quoted earlier. I once had issues because my hotend wasn't fully tightened. Now I'm having issues with grinding, on professional and filastruder filaments alike.

While I do not know what grinding is I have had no issue with the filastruder filament. I did try to extrude the Pink resin beads and found some wormy contaminants on the outside of the filament. They pop when the come out of the nozzle. I have not tried to extrude them at different temperatures. I think they might be nylon or some other plastic that does not melt at the same temperature. Some virgin materials are not virgins. If they contain recycled plastic they are often referred to as co polymers.

I've often wondered if a spiked wheel would be a better solution to a knurled wheel on the stepper, but I don't see anyone using one so I'm guessing no.  It would be less surface contact but if you intentionally dug into the filament you'd have less ability to slip and hardly any issue with getting a glaze of filament shavings in your wheel as we do now from time to time.

http://hydraraptor.blogspot.de/2009/04/ … ction.html

I had no trouble with the resin I got from you, or OSB printing. I think there are multiple reasons for grinding.
1) contaminant stuck in nozzle causing back pressure and loss of flow
2) chips/dust etc. in barrel causing loss of motion of filament
3) soft surface hardness on filament.
4) combinations of the above at the worst possible moment.
I would imagine from my 500+ hours of printing( 30 pounds of filament) I have had only 4 incidents of grinding. They mostly occur right before I have to take apart and clean my extruder.

Possibly. I've never had issues, so I've never explored drying. I know the pros do it - but they extrude a lot faster.

Btw, it seems my issues were a partially plugged nozzle, probably from getting careless and leaving the hotend at temperature too long. I cleaned it with a guitar string, seems fine now. I was having issues with pro filament as well as filastruder filament, and now I can print fine with both.

FYI, Tim, I finally got to the gray filament you sent (your "leavings" so to speak) and I seem to have some clogging issues.  Not sure if it's relevant, but I thought you should know.  The regular natural hasn't had a problem yet.

Yeah, I bet. That stuff nearly certainly had contaminants. It was "run at your own risk" for a reason!

EDIT: The MFI on the grey is less than half of the white. You will definitely have to slow down to use it - I usually print with it around 50mm/s