Copper Fill MK3
I am totally new to the MK3. I did get some basic files to print in PLA. When I print with copperfill the plastic does not stick to the board. I did use a harden steal nossle as recommended. I did try to calibrate it with the copper fill and it does not print anything out now. I am thinking the nossle is clogged. What do I need to do now to fix this?
Re: Copper Fill MK3
Did you first test the new printer using the included print test sample gcodes that came with the printer?
A plugged nozzle must be cleaned using COLD PULLs ... the process is something like this:
Let the printer cool down completely.
Loosen the filament tension gear (open the door).
Set the nozzle temperature to 90c.
Start pulling upward on the filament above the extruder. Pull slow but firm, but you don't need to lift the printer. As the filament warms the filament will break loose of the nozzle and pull out. If you wait too long, the filament may stretch like my photos. The end of the filament should look like this picture: and a great pull will have a nipple from the actual nozzle orifice.
Re: Copper Fill MK3
Thanks for helping tim.m30
No i did not find any tutorials on test prints and settings. I went straight into printing some rectangular models that I designed in onshape. With plain PLA it seemed to work. When I went to copper fill it would not stick to plate. It stopped altogether when i tried to recalibrate it with the copper fill. I was trying to set the temp high(260) and use a needle to clean it out first. There is no mode to release melted filiment in the firmware. I did stick the needle in the slot and it is hitting some thing. The cold pull does not look promising because the filiment is not really making contact to the clog. It comes out with little effort. I am sure I have to have some method of opening up the extruder to cause plastic to come out.
Regards
Re: Copper Fill MK3
Google Prusa Printers ... here's two guides ...
https://www.prusa3d.com/howto/
https://www.prusaprinters.org/slic3r-prusa-edition-beginners-guide/
To do a manual extrusion, preheat to the right temp (215c for PLA) then in the menus scroll down through settings-movement-extruder ... or some such.
It's easy for beginners to misunderstand what a cold pull is. It is as simple as heat the extruder to 215c, manually run some filament through; if that isn't working open the Bondtech idler door and push filament down until you see it extruding. Hold pressure and close the idler and tension it up a bit. Turn the printer off and wait for it to completely cool down to room temp. Then, open the idler again, set the nozzle temp to 90c and immediately start pulling the filament out - apply about enough lift to lift the printer off the table, but not more, and don't jerk at it. Constant pull is best. At some point the filament will begin stretching, so keep up the tension, and then the rest of the nozzle will give.
There are rare cases where the nozzle is 100% jammed (wrong temp is usually the cause) and require removing the nozzle. Read the instructions on the E3D -V6 web pages to learn how to replace a nozzle. Not reading will result in more problems than you want to deal with.
Re: Copper Fill MK3
I really cann't do a cold pull unless I know exactly how to turn on the extruder. I did try movement extruder and both positive and negative numbers seem to have no impact on the nossle diameter. I still cannot get a needle to penatrate the nossle.
Re: Copper Fill MK3
First, I am confused. How did you change the nozzle if you don't know how to control the extruder?
Second, a cold pull does not require the needle. I've found the needle doesn't really help with nozzle plugs. I wouldn't waste my time.
Third, rereading your post a few times, it almost sounds like filament is broken off in the heat break. While you should be able to preheat and manually use the extruder controls to load new filament and force the stuck filament along; but if this is above your expertise level then removing the nozzle is your last choice but even that requires a bit of knowledge.
Summary: Changing the nozzle from the stock brass to a steel version requires a bit of prior experience/knowledge. Did you follow the nozzle change process from the folks you bought the nozzle from? On E3D nozzles, you must heat the hot end to 285c before loosening the nozzle. So if you've changed the nozzle and followed the instructions you should know how to control the extruder. If you didn't follow the instructions, well, that probably explains the problems you are now having.
Suggested reading: Here's Prusa's blogs on changing and dealing with clogged nozzles.
https://help.prusa3d.com/article/fJa7GxLSG6-changing-or-replacing-nozzle
https://help.prusa3d.com/article/WWVRzOY1dX-clogged-nozzle