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Re: Extruder's thermistor spikes/Drops when HeatedBed reaching setpoint (95°C) - 11 years ago
Cefiar, thanks for the info. I can confirm that I have ground loop issues, but do not feel great about reducing electrical safety by rewiring my psu. Do you have a suggestion/ballpark for a reasonable resistor value?by Sal - Controllers
Re: Extruder's thermistor spikes/Drops when HeatedBed reaching setpoint (95°C) - 11 years ago
So, just wanted to share my conclusions on similar issue with my Melzi. I eventually reinforced the ground plane by soldering an additional cable directly to the ground pin of the heatbed FET and connecting it to the ground terminal on the Melzi power input. This patch eliminated my temperature oscillations. I imagine the root cause for this problem is that my pcb is manufactured with too thin coby Sal - Controllers
Re: Update on the E3D All Metal Hotend (Now finally shipping!) 
[Lots of pictures] - 11 years ago
theodleif Wrote: > Does the 1.75 mm version reliably run without > jams, too (PLA)? No problems whatsoever, and I have an early version of the E3D. For example, I recently printed all parts (PLA) for my delta, maybe 15 hours of printing without an issue. The delta is also getting an E3D hotend, did not think twice before ordering. It will be interesting to try out bowden and the new nozzleby Sal - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 11 years ago
I thought the gummy section was the main source of friction in the hot end, except maybe for the nozzle. During operation the gummy section varies in size, thereby causing varying friction, leading to inconsistent extrusion. Edit: Guess I missed a couple of posts...by Sal - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 11 years ago
For me, printing slower helps. You could also try reducing retract. I use 0.5 mm without problems but that is with a direct drive (non geared) 1.75 mm extruder so i am not sure how that compares. And of course temperature... But l have never figured out if it should go up or down in this situation... I would guess that Sanjay has done some research in these things?by Sal - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 11 years ago
I agree with nophead, this problem sounds like pla at high speed and/or high temp. I got these sleeves on my old hotend, but have not seen them with the e3d.by Sal - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 11 years ago
I do not think he has received his second batch yet. I am waiting for the spare part heat break to become available since I am a bit nervous when trying difficult prints in case I break that 0.4 mm thick tube...by Sal - General
Re: .9 steppers ? - 11 years ago
I recently did this with my direct drive extruder in hope of getting a more even extrusion rate. For me it did not work out as planned because with the .9 stepper I had to turn up the current adjustment which led to un-even microstepping instead. With a new hot-end with less friction I was able to turn down the current to low values and now have perfectly even extrusion. However, that is also truby Sal - General
Re: Update on the E3D All Metal Hotend (Now finally shipping!) [Lots of pictures] - 11 years ago
Regarding problems with jamming possibly related to difficult filament. I am right now printing with a red/orange filament from Supply3dPLA that was more or less impossible to use with old hot end due to jamming every few layers. Tried all temp and speed combinations. With e3d hot end I have seen no problems at all. Just standard temp and go. These are just my observations, not sure if it helps.by Sal - General