Author: 3dprinterbank

Could use some help regarding underextrusion/filament grip.

After two days of troubleshooting I’ve nailed the problem. It appears my extruder’s hobbed bolt is not able to pull in filament with enough strength. If I just barely keep a little pressure pushing the filament down with my fingers, it extrudes fabulously. Without me gently pressing the filament into the head, it can barely extrude at all.I literally held the filament for an entire print to see how it did, and it looked decent enough to get tuning/printing. But on another cube, where I wasn’t consistently holding it, it’s garbage.As for everything else with the printer, zero issues from what I can tell. Thing works great other than the weak pulling force on the filament.Any ideas? My only idea would be to affix the reel above the printer so there is more of a direct line for the filament to go, and there wouldn’t be as much resistance for the motor to pull on it. I’ll have to rig something up (no idea how yet) if that would help.Specs: Brand new Folgertech 2020 Prusa i3 (can’t even calibrate e-steps/print a cube due to this issue)0.4mm nozzle1.75mm Hatchbox Orange PLA0.2mm layer height1.0 extrusion multiplier (tried as high as 1.2 to see if that helped, it did not)Extruder temp 220 (I figured a little on the high end would help flow)Bed temp 7530% line fillNever moves much faster than 50mm/s4mm retraction (oddly, while holding the filament during a print, the retraction and subsequent pulling back in of the filament feels very strong/solid. It’s as if only the feed during extrusion is “weak”)Retraction speed 60mm/sMostly default settings other than that. http://ift.tt/2bgDpi4

Stringy extrusion mid print

I haven’t used my printer for about two weeks. I have a flashforge creator pro and when I use my left extruder that has pla in it sometimes it will print the first layer fine and other times it won’t. When it prints the first layer fine it gets stringy mid print. Could it be the filament is dusty or is there a partial clog? When I use the right extruder it prints fine. http://ift.tt/2bfoO38

advice about wire splicing

I have a printrbot simple metal and I wanted to do a Z upgrade. I acquired a new lead screw and two matching rods that are 36″ and 48″ respectively. Could anyone give me advice on what i should do about the wiring that connects the control board to the printer head, fan or motors. Thank you in advanced http://ift.tt/2aLTe06