Here are the three calibration cubes that I printed and their issues:
Full Print: https://imgur.com/iijCv87
Mid Print: https://imgur.com/boEjGDY
I cant seem to figure out how to get the X to print properly. There are issues going on with the detail on the edges and continues to look messy. Any ideas? Im not as concerned about the wave-like pattern on the walls, unless that is contributing to the messiness of the X.
Settings:
https://imgur.com/a/FCrda
Advice? poor filament? Slicer issues? etc?
From your settings it looks like youre printing ABS? have you checked the filament diameter with some calipers? looks like inconsistent extrusion which can be cause by a few things. Temp variation, wrong filament diameter, or even mechanical issues. Gotta go one by one and try to find out which it is
Yes, ive been printing ABS. And i have not done anything with calipers. Would i only have to measure the end and just input that measurement for accurately into my slicer? Or are you saying that i should take multiple measurements along the string of filament to see how inconsistent the filament is?
also it looks like my extruder is fluctuating by about 10 degrees from peak to trough on the sine curve. So i presume thats a problem haha.
when measuring the diameter you want to pick 3-5 spots along about 4-6 foot piece and use the average of the bunch. The 10 degree fluctuation is definitely the culprit. You should run a pid tune. A quick top with the pid tune make sure your extruder is at room temperature turn fans on at whatever speed or percentage you usually use, also if M500 doesn’t save to eeprom for some reason input the pid manually in your firmware and update. Also run the pid auttune at 5 degrees above what youre planning to print at so if you plan to print your abs at 220 run your pid autotune at 225
Is your extruder fan failing? Could also be loose thermistor or loose heat cart
Doesnt look like fan is failing. And the PID tuning seems to be new to me so ill investigate more into that and see what comes
First image shows need for PID tuning. Run PID tuning.
Second image shows overextrusion. Print 100% infill calibration cube until you get the the point that the top of that cube is perfectly flat, not convex or concave.
Ill try that out! Thank you! And when i finally get a good extrauion rate, will that rate change when i speed up or slow down the print speeds
http://reprap.org/wiki/PID\_Tuning This will walk you through the pid autotune, No disrespect to perry_1 but I don’t see why he should have to do a print at 100% I fill, I’d just calibrate till a 30% infill looks good, but I’m sure Perry has reasons for recommending the 100%
Perry_1
10
No problem giving your opinion, I do not take that as disrespect.
My reasons for doing 100% infill is to hit a near perfect as you can.
If you are overextruding, you will see when your cube is printed, that there is just too much material in there, and the top of the cube will be convex. It can be difficult to see overextruding with 30% infill, because there is too much empty space for the extra material to go, where with 100% infill all overextrusion will rise to the top, so to speak.
Same with underextrusion. If you fill a cube 100%, and you have a concave tube, you are underextruding.
I am talking very small cubes for testing, so not that big a deal to print 100% vrs. 30%.
Just my opinion!
So as i was going through the PID tuning i found that it was necessary to have repetier firmware, and I only have repetier host. And people have been talking about not getting just the standard repetier firmware, but one that has already been configured? Kind of a noob here and not sure how to go about finishing the PID tuning after getting the Ki, p, and d values since i dont have a “configuration.h” folder to put it in. Advice with this?
Do u have Arduino installed on your computer? Config h tab is in Arduino Marlin. You don’t have to do the config h tab necessarily as long as it saves to the eeprom when you do M500. First off which slicer do you use? You can do this in many other slicers than repitier
I am using repetier host software, but for slicers I have been using Slic3r and Curaengine. And yes I have arduino, but i was reading that i had to open a file called “repetier.pde” in arduino to get to the configuration.h tab, and i dont have that file on my computer and believe its only a part of the repetier firmware software, not repetier host
Before you input in the config h tab let’s first try to run the pid tune. Open the communication box where you can input gcode and type M303 E0 S225 C8 after it’s done running you can input the new pid values with M303 P I D input your new pid values send it then type M500 to save
So i did the pid tune and got my three values, but I got lost on the next step.
Next command is “M303 P I D”? And then input values? Then “M500”?
Correct so the final pid values given will be inputted for example if final read is kp12 ki0.6 kd 9.6 I will input those values by there respected letters when doing m303 after you send that you type M500 to save it to eeprom. Hope this helps
