I have used these for 3 years almost, they are my life saver.

If anyone else plays guitar, your strings are a perfect cleaning tool, I use specifically the 0.28mm ones with the purple tip from d'iadario but any will do, you just need to check the thickness.

I have a 0.3mm nozzle so the 0.28mm guitar string is the perfect cleaning tool, you can get it right in there and unclog it.

If your extruder will not extrude straight down, and comes out to the side a bit in curly patterns, sticks to the extruder end until it forms a massive blob, then falls thanks to the effects of gravity, then please, give this a go it will save you money and time.

A pack of guitar strings is $10, by itself about $2... this is a win win scenario.

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