Hi guys I’m very to new to Printing with this U1 and to be fair I’ve had good results with the provided Snapspeed filaments supplied but my first issue is the non availability of the Snapspeed support filament for PLA which I need of my Makerworld large print “Side filament dry boxes” using a Bambu.3MF imported.
So I went Polymaker PolySupport breakaway support for PLA but I think I’ve got the same issue you guys are talking about because the first layer was fine on the heat plate as you can see in the image but then the issue started but I am not sure if we are talking about the same thing as this thread can you guys tell me if that’s the case and if So what can I do as if this is very new to me?
I think your first layer looks good—can you screenshot your process parameter settings?
My two cents about two things to keep in mind with Support for…
Make sure it’s dry! Had this bag been opened previously? Do you have a dryer?
Don’t waste it as a printing material! In your slicer make sure that it is only used as an Interface Layer. It’s more expensive but used correctly, I think it saves money due to the lack of time wasted on post processing.
Have you tried other Polymaker filaments on your U1 yet? They work great for me with the Generic PLA profile 
I don’t think so.
This thread is about uneven prints; yours looks like poor layer adhesion. The material is meant not to stick very well, so that’s hardly surprising. It might adhere to itself better if you increase the temperature.
Just as an overall comment, having skimmed through this saga, you guys realise FDM printing is an art about balancing contrary compromises – right? It’s not science at all.
Anything marginally wrong with the mechanics alters the conditions, and means re-tuning the compromises (and perhaps accepting the best you can find as “good enough”), or tracking down the fault. Printing at the wrong speed can introduce resonance, which will have a different characteristic if something is loose. Different conditions affect different filaments differently, even the same filament from the same manufacturer but a different colour.
If a unit is defective then sure, it should be replaced, but to dis the U1 as useless is missing the point: all units suffer from problems, and the point of the U1 is its tool-changer – not its raw print speed (and all manufacturers’ headline print speeds are optimistic anyway).
