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Cracks in all thrusters

I havn small cracks in all my 8 T200 thrusters, have anyone seen this before? Even in 3 new thrusters that only been just for 2 hours.

Hi Truls,

From your pictures those look like weld lines left over from the injection molding process. These are normal and shouldn’t be a problem. If you are unsure about any of the lines or suspect that some are indeed cracks you can take off the nozzle and flex the stator arms a little bit, any actual cracks should be apparent after doing this. Send us an email at support@bluerobotics.com and reference this thread if you find any cracks in your plastic.