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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Strange motor problem - 10 years ago
Just checked with v0.82.2: same problem. I made some scripts to tests params. First script: G90 G1 Z5 F150 G1 X25 Y25 F15000 G91 G1 Z0.1 F150 G1 X100 Y100 F15000 G1 Z0.1 F150 G1 X-100 Y-100 F15000 G1 Z0.1 F150 G1 X100 Y100 F15000 G1 Z0.1 F150 G1 X-100 Y-100 F15000 G1 Z0.1 F150 G1 X100 Y100 F15000 G1 Z0.1 F150 G1 X-100 Y-100 F15000 G1 Z0.1 F150 G1 X100 Y100 F15000 G1 Z0.1 F150 G1 X-100 Y-100 F1by fma - Repetier
Re: Keyboard Jogging - 10 years ago
What precise switch are your refering? You mean to use such thing a low endstop? Or as specific Z probe? Is it mechnical or light-base switch?by fma - Repetier
Re: Strange motor problem - 10 years ago
Mmm, I may have said something wrong. In fact, the noise comes from X axis, but the shift problems occur on Y!!! Could it be a timing problem in the step generator or something? I have no way to monitor signals going to stepper amplifier... I will also give a try to last firmware version, as soon as I have time.by fma - Repetier
Re: Strange motor problem - 10 years ago
Thanks for your answer. BTW, I tried to reduce the acceleration (500mm/s², inseatd of 2000mm/s²), and it is better. But slower! What are the standard values for all the speeds/accel/jerk and so? I also may have a bad combination...by fma - Repetier
Re: Keyboard Jogging - 10 years ago
Ok, but it is not easy to adjust while printing; we need to keep an eye on the print, so it should not require to enter complex commands. That's why I was thinking about 2 dedicated hard keys directly binded to the motor pulse...by fma - Repetier
Re: Strange motor problem - 10 years ago
So, nobody has this problem? I'm pretty sure it's a firmware issue, as it only occurs when motors are disabled. I think that the firmware disables the X/Y axis when Z moves, leading to the issue after each layer. Moves whithin the layer are perfect, even at very high speed (>150mm/s)...by fma - Repetier
Re: Keyboard Jogging - 10 years ago
I have another request regarding jogging: could it be possible to have a way to adjust the Z axis while printing? This could be very helpfull to adjust the first layer, during the first seconds of extrusion, to have a perfect sticking... The idea is to send steps to the motor whithout using the planer or so, as it is only to adjust the zero position, in fact. This could also be with 2 push buttby fma - Repetier
Strange motor problem - 10 years ago
Hi, I'm using an Azteeg X3 controller with repetier firmware and I have a strange motor behaviour. When motors are disabled, the first move on the Y axis often generated a short noise ("CLAC') when it starts. It also occurs on the first Y move after each Z move. And it sometime produces a shift in the print, especially if I print faster. Someone suggested that the firmware may disable the motoby fma - Repetier
Choice of material for heat resistance - 10 years ago
Hi, I plan to make a hotend mount as on attached picture (yellow part). I tried a close design with ABS, but the heat was to important (I need to heat the hotend at 255°C for the ABS I use), and it started to melt. I was wondering if Shapeways Alumide should be enough to resist? Or should I switch to Stainless Steel? Thanks for advice.by fma - General
Re: Smallest nozzle ever? - 10 years ago
Mmm, so pressure@0,2mm is 5 times the pressure@0,3mm! It increases pretty fast! It is not a problem to slow down the speed, but I hope my direct drive extruder will be able to push the filament! What about the temperature? How do you adjust it, when reducing the nozzle size? Does it make sens to increase it, so the ABS is more runny?by fma - Printing
Re: Smallest nozzle ever? - 10 years ago
I just asked GRRF, and they can make 0.2mm nozzle. I'm currently using a 0.3mm GRRF nozzle (for 1.75mm filament), and I tried yesterday night layers of 0.075mm. It worked fine, but XY accuracy does not seem to be improved over 0.1mm layers. Is it because 0.3mm is to high for the nozzle hole? Do you think I can get better details on XY using a 0.2mm nozzle? Are there some known issues using sucby fma - Printing
Re: Small Detail Extruder - 10 years ago
ABS/PLA quality is also a very important factor when printing small parts. Cooling too!by fma - General
Re: ABS quality (1,75mm) - 10 years ago
Does anyone tried this 'Smart' ABS: Is it really smart?by fma - General
Re: Josef Prusa's Next Gen Hot-End (Print Nylon, Peek & PC) - 10 years ago
I have a question: I often read that a good nozzle should have a very short transition between solid and melted plastic. This is why most designs use PTFE and PEEK. What happens in an entirely metal hot-end? Is not the temperature gradiant too large? Where does the plastic really melt?by fma - General
ABS quality (1,75mm) - 10 years ago
Hi! I recently switched to a 1.75mm nozzle (from GGRF), and I'm about to buy ABS. My first ABS (3mm) was from Ultimachine. I then bough ABS from Paoparts. Ultimachine ABS was good, but a little bit yellow. The Paoparts ABS was pure white (very nice), but had more shrinkage, and was more brittle (cohesion between layers was not as good as with Ultimachine one). What ABS do you use? I mainly priby fma - General
Re: Anemometer - 10 years ago
@wendy, I didn't write any build procedure yet, as I didn't a complete one myself! I hope to do that soon, but I have a lot of things to do at the same time! I will post here as soon as I have news.by fma - Let's design something! (I've got an idea ...)
Direct drive extruder - 10 years ago
Hi, I have a nice GRRF hot-end for 3mm filament, with a 0.3mm nozzle, which I'm currently using with a geared extruder (Wade). I'm wondering if it is possible to drive such hot-end configuration with a direct drive extruder (= a Nema17 motor without any reducer)? Or do I have to switch to a 1.7mm filament hot-end? Thanks,by fma - Plastic Extruder Working Group
Re: Rostock delta robot now moving at 400mm/s - 11 years ago
Parallel axis robot?by fma - Delta Machines
Re: Anemometer - 11 years ago
Thanks for these advices!by fma - Let's design something! (I've got an idea ...)
Re: Anemometer - 11 years ago
Good idea. I was planning to use simple paint for models, but a varnish is better.by fma - Let's design something! (I've got an idea ...)
Re: Anemometer - 11 years ago
Ok, I finally released a version which is close to the final one: I'm waiting for the magnets to test and calibrate it. Any feedback welcome.by fma - Let's design something! (I've got an idea ...)
Re: Makerslide Aluminium Extrusions - 11 years ago
This could be nice! Any idea of the final price? BTW, where do you live? Would you ship to France?by fma - Let's design something! (I've got an idea ...)
Re: Extrusion multiplier very low! - 11 years ago
From a theorical point of view, is it possible to have the extrusion width vary a little bit, all other parameters remaining the same (by pushing more or less plastic, at the same feed rate)? How do we determine the limits?by fma - Slic3r
Re: Extrusion multiplier very low! - 11 years ago
I guess that it has a lot of dependent factors: extrusion speed, hot-end geometry (nozzle length), temperature, ABS quality... how can we deal with all these parameters? Do we have to make calibration for every case? According to you, what are the mandatory parameter(s) to adjust to calibrate the printing? Skeinforge seems to use width over thickness ratio and extrusion multiplier. Why has the aby fma - Slic3r
Re: Rostock Problem - 11 years ago
Johan said that he was modifying the firmware so it only needs the top endstops; maybe you are using a not-ready version?by fma - Delta Machines
Re: Rostock Derivative - 11 years ago
Very nice! I was thinking using similar structure. After my first tests with the original design, I will switch to yours, but I will also use MakerSlides instead of rods ; I hope to be able to use this DeltaBot for milling PCB as well.by fma - Delta Machines