
I recently found that my extruder was clogged internally due to an overstressed teflon tube. I buy this brand because I print a lot with PETG and ABS that range from 240 to 246 degrees, so I need higher heat resistant tubing. I tried twice and both times the TPU was in the tube and never reached the head. I printed the object I was trying to print using a piece of 250 degree tubing (cheap stuff) and it worked. But I know it won't last. so i gave this product a 3 because it was good on petg and abs but not tpu. I went back and later upgraded to a 4 because it works great in high temps with pacf and nylon.

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