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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Nozzle scratches on bed/printed layers-.- - 12 years ago
Problem seems solved, thank you all rebuild it completely and discovered that in one pulley the tightening screw was not completely tight! just half a turn so the pulley looked like following the motor rotation perfectly but it slipped just a little bit when the motor changed direction. also couldnt see this from outside because the pulley covered the motor axis completely. been looking desperaby eagreen - Delta Machines
Re: Nozzle scratches on bed/printed layers-.- - 12 years ago
checked and no play on any belt an im getting desperate :/ when im homing all axes and move directly to one of the 4 calibration points the height is perfekt. redoin it at slower speed its about .1 to .2mm too low. homing and goint to x0 y0 z0 -> perfect height, then move directly to third tower base (about x55 y0 z0) -> perfect height, direct move back to center -> .4mm too low (if itby eagreen - Delta Machines
Re: Nozzle scratches on bed/printed layers-.- - 12 years ago
Problem still persists, but im pretty sure now its a hardware problem. when im calibrating the bed with paper, the first spot is perfect, move 2 mm -> too low, move 2 more mm -> perfect, move 2 more -> too high and so on .... :/ also saw some strange behaviour on a test print : the nozzle crosses the last printed line when moving closer to the camera, almost looks like it jumps leftby eagreen - Delta Machines
Re: Update on the E3D All Metal Hotend (Now finally shipping!) 
[Lots of pictures] - 12 years ago
printing jam-free after adding thermal grease to all threaded connections...yetby eagreen - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 12 years ago
ill take a look at the heat transition between heatbreak and heatsink first. shouldnt the heat only be able too climb up inside the heatbreak when theres no good thermal connection between heatbreak and heatsink?by eagreen - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 12 years ago
me again, after a full clean i thought it may be that the heat transfer from heating block to the nozzle maybe bad, because it screws in very loose until pressed against the heatbreak. so i added some thermal grease to the winding. after reinstalling it printed well for about 40 mins @210° and jammed again :/ i dont really see if the temporary fix was cleaning the hotend or the nozzle thing, bby eagreen - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 12 years ago
okay, disassembled it completely, cleaned it. there was no clog anywhere inside, heatbrake an nozzle and perfectly concentric. diameter increase on molten plastic is now a logic consequence and doesnt seem to be causing any jamming as the inner diameter of the hotend is 2mm and filament is 1.75 ...... but still not seein any cause for the jamming, will reassemble it this evening and try again.by eagreen - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 12 years ago
hi, thx for the quick responses its white pla which i already printed with an j-head hotend until its peek part broke into pieces :/ i'm using a shrouded fan, temperature between first an 2nd fin is 33° @ 240° heater block. i also found that it jams always when its not extruding for about 5 to 10 seconds some pictures: Assebled Hotend pulled out pla after jamming:by eagreen - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 12 years ago
got mine today (1.75mm bowden), but wasnt able to print successfully yet. It keeps jamming, at 180°C as well as at 230°C with pla... strange thing is: at 180° it extrudes fine for about 10 seconds, then jams. if i manually retract ~10mm and refeed its working again for another 10 seconds, then jams again. Same behaviour at 230° where pla should flush out like water, no sollution for that so far.by eagreen - General
Nozzle scratches on bed/printed layers-.- - 12 years ago
Hi, I recently build myself a Delta Printer (i already haven ultimaker, was just curious to have another) which is printing almost fine, test cubes come out in right dimensions, z height is even all over the printing surface. there's just one problem left that i couldn't solve: when the nozzle is leveled over the print surface with .1mm height (using a piece of paper) and then moves, i can hearby eagreen - Delta Machines