It’s pretty clear these gears wear down which i think is normal and will need to be replaced infrequently. Thanks for the post.
Let this column know how the helical gears turn out after they are installed and tested. Heads up i got some nozzles off ali express and they were not great, caused jams. Never ever using the ali nozzles again unless a trusted source verifies.
That an old post. Ive since tried all kinds of gears and went back to Bambu OEM. The bambu are now angled helical gears as well in the latest revision. I do have one aftermarket set installed in my P1s but I mainly use that for low temperature filaments. I find the aftermarket gear set with the aluminium arms retain heat more and cause jams from heat creep with high temp materials, so I stick to OEM on my X1. Basically the stock OEM is the best.
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1600 hours in. its still fine. no skipping or under extrusion. 
now ive done gone said it, so prolly will fail tomorrow 
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