First layer Perfect everything after that is garbage
Im trying to tune my v minion after installing Ratos 2.1 .I got it setup with a Goliath and a hextruder, but it won't print properly the first layer comes out perfect but after that the layers won't stick, separate and look under extruded. Before that I had it set up on old Ratos with an orbiter and rapido and it printed perfectly. I print the PLA at 240c . Checked e steps tried to print slower but nothing changes.
12 Replies
The layers after the first also have gaps in it.
I changed 4 Things old RatOs to 2.1
Rapido UHF to Goliath
Orbiter 2.0 to Hextruder
And Old Probe to super pinda
I don't think it's the hotend l, I switched extruders so that's also not it. It might be my z axis
Sounds like both your z offset and your flow rate are too low.
If your z offset is e.g. 0.05mm off your first layer will only be 0.15mm thick instead of 0.2mm thick. That means that there is less space for the filament to occupy and a flow rate of ~75% will be enough to produce a perfect first layer. The problem arises when you get to the following layers which have the proper layer height of 0.2mm. On these there will not be enough material if your flow is at 75%.
The other option is of course that your steps/mm on the z-axis are off. But since you said that you changed the hotend , extruder and z probe I think the first option is more likely.
@Max Ok ill try to up the flow thanks. what i forgot to mention is that i upgraded the minion to v1.1 with the oldham coupling on the z axis. not sure if there iis any documentation to it maybe i had to change the steps for it
for flow rate ill guess i can just do the orcaslicer one
Well that didn't went to well
There also gaps between second layer wall and the infill
I printed this with 1.5 Flow ratio
1.5 seems like a lot, usually if you need to adjust the flow more than about 10% that is a good sign that something else is wrong.
Since you basically replaced everything that needs calibration on the printer I think the easiest thing would be that you just run through ellis tuning guide from start to finish and hopefully you will find the issue along the way:
https://ellis3dp.com/Print-Tuning-Guide/
@Max i know right. the thing is i calibrated my extruder and first layer, but i cant do PA because i cant print past layer 1. Do you know by chance how far the superpinda probe should be away from the bed ?
Unfortunately not, I do not have a minion. When you upgraded the z-axis, did you also change the lead screw? If I remember correctly the Oldham uses a 4mm pitch lead screw while some of the older printers used 8mm pitch lead screws. In that case you would to adjust the steps/mm on z. But that should also be fairly easy to tell if you print a calibration cube, as the height would be off by a factor of 2.
Funny that u mention it because i just pulled the leasdscrew out to see if its bend. And it is a different one i looked it up where i bought it and it has 2mm pitch. and with this rotation_distance = <screw_pitch> * <number_of_separate_threads> i should be able to determine my new rotation distance
@Max it says T8/ 2mm thread pitch/ 8mm Lead of Thread. Should be TR8x8 no ?
What do you had flowrate set to? Looks likes you’re outrunning the hotend on the flow test
Thank you for all the help. I fixed it it, was indeed the Lead Screw i put it in Months ago and didnt touch the Printer thats why i forgot about it. It was a Tr8x8 so i had to double my rotation distance.