Hi! I wan't to share my Robot Arm design with you guys. It's 3D printed and all parts (STL) and an assembly manual can be found on our github. It's the third iteration of my initial design, and it comes out quite nice now. I also spent quite some time on the assembly manual, to make it easy for people to assemble. To read more about the arm and for links to github, a video and more see: Theby nic6911 - Robots!
Here is my gcode and a picture of a model that doesn't print correct on both of my printers. I have tried with and without retract. Increasing temp to about 210 degrees doesn't help My homemade printer has a j-head hot end My Printrbot Jr. has the standard fitted hot end I print PLA 1.75mm I have tried running at speeds from 15-70mm/s I have tried to increase and decrease E-step On the print forby nic6911 - Printing
Hmm.. I have tried to turn off retraction, turn up the heat and I have even built a new printer that does exactly the same thing on some prints. I know it's because it doesn't extrude enough filament temporarily, but i don't see why... If I adjust E-step I will get to much extrusion in general and a bad result... I have used different types/makes of filament, but all are PLA.by nic6911 - Printing
Hi. I am finishing a 3d-printer build and was testing movement. First of all here is my system: Arduino mega2560 Ramps 1.4 G3D drivers Nema17 steppers Marlin firmware Pronterface GUI on a Win7 pc My printer has two z-axis steppers. The x and y-axis work fine. I can heat up the extruder and extrude plastic also. But the z-axis is trouble! When i hit Z+ sometimes it moves up and sometimes it moveby nic6911 - RAMPS Electronics
I ran through all of the changes I have made since the last time i printed with this particular PLA. And one of the things was that i tightened the bolts that keeps the filament to the hobbed bolt. Apparantly I have tightened the extruder to much, because I just lossened the bolts so that there is only light pressure on the filament when passing the hobbed bolt, and it is printing as i write thisby nic6911 - Printing
Hi. I have been printing with my printrbot jr for a while now. The last couple of weeks with some white PLA. Suddenly the extruder began jamming. I cleaned the extruder, assembled it and that didn't help. So after some trial and error i found the temp to be to low. So I got it to print fine at about 205 degrees. Now I have changed filament, a yellow PLA, which I have printed with before i got thby nic6911 - Printing
Hi. I don't now what firmware the printrbot jr. is running, but it is the standard on the printrboard i use. I have tried to increase the e-steps but this just gives me a bad printing result with to much plastic. I have calibrated the extruder to this amount and it works fine when printing bigger things. And i guess it makes no difference if i change the amount before the print like i already havby nic6911 - Printing
Hi thanks for the replies. I have made sure that the belts move freely and nothing is vibrating. I have just tried a print at 15mm/s (SLOOOOW) with the same result... I have tried to raise the temp and lower it, nothing changes. The nozzle is cleaned. The grip of the filament is good and i have tightened it some more to make sure it doesn't slip. I have tried to print some more solid pieces andby nic6911 - Printing
Yeah okay the picture is not so good, Try this one! Regarding the temp. It is suggested on the filament to use around 195 C to print. I have printed succesfully with this material and other PLA materials before. It seems like the problem occurs when printing "thin" walls, but it is hard to tell because on bigger parts the fault could be "hidden" inside the part. Regards Nicby nic6911 - Printing
Hi everyone! I have a Pintrbot jr. and have printed a couple of things without problems. Now I am getting a bad result whenever i print. You can see it in the attached photo. It is like that materiel is not always extruded properly. I thought it was the stepper skipping steps, but I tried to give it more current with the same result. After that i tried tightening the the mechanism that keeps theby nic6911 - Printing