Just wow. You know you could just snip the RFID tags if you can see them, which I would think you can if they’re that low.
Since you decided to rant (which is perfectly fine), but then call anyone that may disagree with you (before any have) “fanboys” I doubt you’ll get that many having sympathy for you.
Before you tell me you don’t care, remember you found the forum, created a post, then replied to me (cause I bet you will). Those are signs you do care.
Now I’m printing a bit, have a few small rolls left so I’m going to try and get a grip on what you’re describing.
BTW, never have had a problem with BBL basic. At one point there was a question as to if Sunlu or eSun actually manufactured BBL filament, cause BBL doesn’t.
I was under the impression that the RFID tag are not read once a print has started.
If you have a spool runout, replace it manually with another BL spool (even with the tags in-place) it should continue with the new spool as the RFID tag verification would not occur until the end.
This isn’t as convenient as filling up you AMS with the spools you wish to be used up, but, does all the process to occur.
I used a bunch of near-empty spools on my AMS lite the other day from non-BL sources, I know how convenient it could be if I filled up one of my dual AMS setups entirely with end of spool filaments.
There are a number of posts with this exact “feature request”, which is what this could have been.
I will never knock a good rant though, I enjoy them too much myself.
Nice to know. I’ve never had to switch from BBL to a different one mid print in the same slot. I’ve always handled it by having it roll over and lying to the AMS.
Yep, Malc is right. AMS doesn’t check rolls when they run out. The first time I ran out of filament I missed when the tail disappeared into the mechanism and was really hoping I could save the print. No need to worry. When the tail got to the print head it parked and extruded the rest and waited for me to load another spool. As soon as the AMS saw me load the filament a couple of inches where the sensor could see it, the motors took over, fed to the extruder, it purged a bit (maybe in case I changed color on it) and it picked back up exactly where it left off.
Since then I haven’t worried at all about filament changes and just try to be there when the tail is about to come off to snip off the wonky end and to make sure there isn’t tape holding the end. As soon as the tail of the last spool disappears a few inches, the replacement spool goes in and feeds automatically whenever the last piece gets purged out. It works beautifully and kudos to Bambu for this. Not perfect but very close.
No fuss. No muss. I’m on latest firmwares and Studio with an X1C and that’s how mine behaves.
I was unaware that it reads tags only at the start of a print. It certainly did not matter if I started with another filament first, it just used whatever I shoved down the AMS slot! My problem occurred when I start with BBL spool. I tried putting the newly run-out tags on another spool, but it made no difference - I can see why. I thought it was expecting a matching tag once it starts with a Bambulab spool.
I think I would like to see some setup where you select a start filament and then the order of filament to use as it runs out. Why doe BBL refuse to implement this functionality? The background issue is that AMS will only use the EXACT same filament, down to color, but then you could manually shove anything down the slot tat just ran out! This is just crazy. To make it worse, I can change filament and it swap slots even from PLA to PETG. It feels like Bambulab is very deliberate in this to not implement a “use what you like at your own risk.”
Exactly how I did it for 9 or 10 build plates worth. Only busted me when the PLA basic ran out as the first roll in the slot. I mixed any PLA shorts in, even silk, and the prints came out well. Ideally, we should be able to load all our leftovers and in the slicer somewhere you select the order of slots you want to print next.The printer probably have enough smarts to select a new variable for temperature and speed if it changes - or whatever is critical for that filament type. My guess is most people using end off rolls, won’t pick critical objects to print if the print setting vary too much by filament. For that, there is filament swaps based on a layer.
The lying to the AMS only works before the print starts. This is a run-out scenario, I cannot predict to the layer when the filament runs out. What I did do, I cut the filament before run out, just so I can have different color for a couple of layers. There was no plan. I was just getting rid of short lenghs and for teh most part it worked, until I started the print with BBL filament.
Trolling hey? Nah, I even tried to resume from the external holder. Cutting off the tags made no difference. What I can’t get, is that it did print about three layers before it ran out.
I do care. I care wasting hours of my time, being caught out again. I care enough to rant about it! My bad for tripping over the same issue, but I am certainly not he only one.
In hindsight I would do things differently. Just to fill you in, there is a filament swap (two in fact) that the AMS handled for the print. So if the swap occurs before a run out, the AMS was spot on, if the slot runs out, I just reloaded the slot in question. Interesting enough, I started with BBL PLA basic, then after it ran out, I put in eSun PLA and it printed a few layers before it stopped and refused to continue. That was when I tried going back to BBL Basic, but a different color. I went so far as to reset my printer to get it going again, but even after a power cycle it wanted to continue, but the filament just won’t load. Anyway, it is possible that the printer was expecting me to load a different slot than the one that just ran out. User error is never excluded. But a manual spool swap just because the filament does not match exactly, is just asking for human error!
I found my PLA Basic do very poor in sharp inside corners. Layer adhesion is poor. Often the bottom layer have “slivers” of filament that sticks to the build plate, sort of unravelling. And there is moisture in a fresh roll. I think I got about 6g from a plastic spool, and 14g from the cardboard core from a refill spool. That leaves my dessicant with about 2g of headroom from a refill spool. I personally like the looks, but decided I won’t buy it again as even the cheapest PLA+ I can find outperforms it, except for looks!
So I only had time to do one, and that was to test his first statement. I let my BBL White run out. When it informed me I needed to add filament I just added another spool of BBL white into the slot. Purged what was left until it could grab the new filament and ran with it.
Now I apologize for not getting to runout and different brand but I got tied up printing for my wife. Not gonna tell her no.
I think I can get to it this morning. I have only a one or two brands that aren’t BBL that are PLA. I’ll just load, run for a bit, cut the filament, etc.
At least I’ll try. We’ve gotta straighten the Lego Room, I have to water my Bonsai, and I hope to nap at some point. It is Sunday after all.
What if you go in the AMS settings and un-check “Insertion update”. I think with that un-checked it shouldn’t read the tags at all. I’ve never experimented with it but I believe that’s how it works.
Mr McGee I will try that. Just started a cube to test this.
I had a great grandmother McGee. She was the best. Looked like Yoda and cussed like a sailor.
OK, didn’t take as long as I thought.
I started with red matte printing a stupid model I created with primitives.
I cut the red almost right after it started. Waited for runnout notification and loaded Sunlu black pla.
Accepted it and printed without an issue. Cut it shortly after loading so it would run out as well.
Loaded Yellow PLA Basic. When the black ran out it grabbed the yellow and continued on.
I don’t see how the brand or anything would matter, if you’re swapping filament in the same spot, on run-out. Once the print starts, it can’t check the AMS RFID tags anymore, so it’s not doing any checks and balances. The system has no way to know what’s actually in there. It only knows if filament is inserted or not. In theory you could insert a spaghetti noodle and for all it’d know, it’d just think it was either some very crunchy pla or very soft pla, depending how you like your pasta cooked.
I agree, obviously.
I had never had the need so I really had no idea beyond what you’ve stated. I’m a master at being wrong so I thought I’d knock out a test this morning.
Now that you mentioned it, someone will try to feed food through this thing…
Nah, I even tried to resume from the external holder. Cutting off the tags made no difference. What I can’t get, is that it did print about three layers before it ran out.
My bad for tripping over the same issue, but I am certainly not he only one.
