DAS_Engineer - don't worry about harming the stepper or the electronics - they can both take it. Plus the other steppers (x,y,z) run at a higher current - I think 1.5A nominal setting.
The reason UM sets the current lower for the extruder is ONLY to avoid grinding filament.
I think in the above post, GEEKS is trying to say there are much more serious problems than this "current" issue and you should just try printing his or Ian's latest feeder.
Geeks, I like you and appreciate your contributions, but your posts translated to English are the most difficult to read of anyone. It would greatly help if you wrote very simple sentences with perfect grammar before translating. Write sentences meant for a 4 years old. Simple, short sentences. Each sentence should have a subject and a verb unlike my previous incomplete sentence.
For example this sentence has no verb so it is confusing:
The stepping motor, on blocked filament, the filament ground.
I hope I don't discourage you Geeks! You are appreciated!
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This is only my opinion ... But I prefer to give that remained in silence!
I'm thought that this is a problem of current or phase! There is nothing!
The wire rubs abnormally entry of the extruder. It is simply impossible for it to move correctly. The stepping motor, on blocked filament, the filament ground.
The problem is slipping.
It is only once solved this proglème slip that we can effectively deal with the current delivered to the motor.
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