PETG collects on nozzle -is plated nozzle a solution?  

I mostly print PETG and I use nickel coated copper nozzles and heater blocks. I think the answer to your question is "it depends". I think the coating helps with the tendency of PETG to curl and stick to the nozzle, the heater block, itself, and pretty much everything else. However, if your accumulation of filament is caused by the nozzle dragging too low, the coating won't help much if at all. I'd try to take the live z a bit more positive. Having filament collect to the point that it drops down is certainly not what I'd consider normal behavior. 

all in all I'm very happy with the coated nozzles (E3D brand). 

Thank you for sharing your experience and opinion.

After I confirmed post I assumed this topic will touch first layer offset... My first layer is just perfect (0.2mm exactly) and so print is visually very good on every layer, incl. first one.
Yes, nozzle actually drag/pushes the filament a little. I think that's normal, because filament diameter of 0.4mm needs to be squished into 0.2mm height. Anyway, the same happens on solid layers above first one -so that would exclude 1st layer issue, I think.

Posted by: @fuchsr

all in all I'm very happy with the coated nozzles (E3D brand). 

-that's very important info for me. Thanks again.

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Sorry, no experience with plated nozzle, but you might have a partially clogged nozzle. I had the exact same issue with PETG, bought the cheapest brass nozzle for 1.5 eur (was the only option in the local shop) and the problem seems to be fixed (fingers crossed).

Posted by: @bogdanh

When I print some object, which has large bottom area, then (PETG) filament starts to collect around the tip of the nozzle -usually closer to the cooling duct. This is most prominent on first 2-3 solid layers (I assume it might be because there's more heat coming to nozzle from hot bed).
Anyway, during printing, filament collected around the tip of the nozzle drops down on just printed surface sticking to it. You know what that means: fallen drop cools down, becomes hard, and next time nozzle runs over that area.. -you get the idea.

My question: Is it worth to get (Nickel) plated nozzle just because of that reason? Does filament really stick noticeable less on the nozle, compared to normal brass nozzle.. or is just a myth? And if plated nozzle is indeed less sticky, how durable is that coating?
I'm mostly interested on those who have experience by using plated nozzle with PETG.

Posted by: @karolis

Sorry, no experience with plated nozzle, but you might have a partially clogged nozzle. I had the exact same issue with PETG, bought the cheapest brass nozzle for 1.5 eur (was the only option in the local shop) and the problem seems to be fixed (fingers crossed). 

No, there isn't any clog because prints are just excellent (so, extrusion is fine) and I only use original (E3D) nozzles.

Posted by: @bogdanh

Anyway, during printing, filament collected around the tip of the nozzle drops down on just printed surface sticking to it. You know what that means: fallen drop cools down, becomes hard, and next time nozzle runs over that area.. -you get the idea.

This is not the situation I would call "just excellent". If the prints are excellent, then I guess there is no problem to solve 🙂

I guess that was meant sarcastic 😉 
And yes, there's no problem needed to be solved -I was just curious about experiences with plated nozzles.