Here is my first print using the MonoPrice Dual Extrusion 3D Printer. It has a lot of stray hairs and wierdness to it so I am wondering what things to look for to help clean it up.
Could this be temparture related so are their guidlines for optimized temparatures for PLA fillement. Thanks.
Stringing can be caused by extruding the filament too hot, but that looks more like something else is going on. Looking closely at the sides of the layers they do not look like they are actually pressed together. If this is an auto-leveling printer then you might need to play with the starting offset. If it is manually leveled then… you might not be dialed in yet.
thanks for the tip. I’ll try releveling and then drop the temp some.
I’ve seen stuff like this due to under extruding also. Did it sounds like your extruder motor was skipping?
yes i see that too. any ideas how to fix? I am going to try to change the temp to 200 instead of 230
Thanks Nathan. Great info. Much appreciated
oh! by the way. Is there a published guid on temp/color?
That is a pretty good first print.
You may have a little bit of calibration to do and you really should use a wipe tower to help reduce the amount of filament wiped from the end of the inactive nozzle onto the print.
You can’t judge every filament of the same color the same. Check the side of the filament spool for a printing temperature range and then go from there.
If you keep turning the temperature up to keep the filament flowing from the nozzle fast enough, consider the idea that you may have too much resistance for filament going through the hotend and that it may need an upgrade, to be cleared of a partial jam, have burs or that you have your nozzle size set wrong. I kind of have the feeling that you do have some nozzle resistance and that you turned your temperature up a bit.
@Nathan_Walkner agreed. Even if heating it up does let you do higher speeds, the layers with little material in them would get overheated and it will be hard to maintain a steady and accurate flow while fighting pressure.
ok i’ll try that too. Thanks
Like what Nathan W & S said: Having done dual prints with a rep1 and a rep2x, this just looks like filament leaking between color change. I’ve not found a solution to ‘suck it back in’ well even with retraction: If color A is printing for a while, color B is leaking out, and sticking to the side. Swap what when color B starts printing. Makerware adds ‘purge walls’ to knock that stuff off, which is the best implementation I’ve seen (but slows down the print as it generates them per layer, and uses a lot of surplus filament in the process). Simplify3d (which I use more often) has really no support for purge walls (grrr). I’m not sure about other slicers (I’ve heard people mention there may be support in other ones), but you should look into ‘ooze wall’, ‘purge tower’ etc. Another reason to use them is: If you have a large print, and only certain parts use certain colors (meaning, large sections of only one color), you can have your filament cooking in the nozzle for hours. You need something to extrude per layer just to keep the filament fresh. I’ve had jams happen without them :S
I think Cura also has a setting for wiping the nozzle off on interior portions of the print where you can’t see it.
