
I've been using this brand from Tianse for a long time (FIRST order September 2017 (2pcs)) and have always had good results, but this last batch (October 2019) ran out of space with one diameter . I just had to use this light blue so the return window went fine and I'm really not happy. I have a Bowden setup and it was hard to feed so I pulled out the calipers and was surprised to see 1.84mm. It varies from 1.84 to 1.78 to within a few centimeters. So far it hasn't been too big to go through a Bowden tube but now I'm crossing my fingers that 1.84mm is as bad as it gets or I'll have to toss the whole coil. Tianse you need to follow your quality control MUCH better as this is my last purchase of your brand for months so you have time to solve this problem. I will buy another roll next year and have it measured and return it immediately if it is still as bad as this one.

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