First time using the AMS…I’m trying to print a 3 Color Part with Generic PLA. I have all the Temps the same for the filament. When it’s time to do a color change it will ‘swap’ out the filament but the nozzle will cool down from my printing temp at 220 down to about 60. I then hear some ‘noise’ from the printer…nozzle temp get to about 55 then it heats back up to operating temp of 220.
It begins to the lay filament in the purge tower…then it prints the next layer/s. It does this for every color ‘swap’. What am I missing? Is this how it’s supposed to perform?
I think you’re referring to the “pooping” which is where some filament is ejected via the rear slot. This is done even when you have a purge tower.
I haven’t done a lot of multi-colour printing, but I expect it cools the nozzle so it can wipe its poop hole without dribbling. This is the clicking noise you hear, as it wipes its anus / nozzle on the PTFE wiper.
The initial purge out the back is to get the bulk of the previous colour out — the rest goes into the purge tower, which is an amount you can tweak, depending on how much colour bleeding you see in the tower.
If the bleeding stops quickly, you can reduce the purge volume. If you find some smears in your final print, you can increase the purge volume.
I figured out what the ‘noise’ is…the Extruder trying to push the filament though the nozzle…but the nozzle is at 60 degrees. So the extruder is ‘grinding’ the filament. I have a bit of experience with 3D Printing…but this is my first attempt with my AMS. I assume it uses the G Code from the machine called ‘Change filament G-code’? I have my ‘minimum’ Temp for my filament set to ‘zero’…is this my problem?
I can’t say for certain that this is your problem, but it sure sounds like it. Your min/max temp should be well within what the manufacturer suggests for printing temperature. Never zero.
I just wonder is the Filament Change G-Code is using those parameters and that’s why this is happening? I modified my temps for all the filaments in the AMS so they have a ‘min’ and a ‘max’. I’m running the job again…we’ll see what it does.
