accelleration

I don't understand the accelleration settings in Marlin. I don't know what I should be aiming for as a good setting. I don't know what setting them too high, or my current worry, too low does.

So if you set the accellerations conservatively low, what are the effects?

Equally how would I diagnose them being too high? What are the effects of setting them too high?

Thanks

Hi,

if the acceleration is very low, you will basically just have a slower printer in general, because it will take more time to get the motors up to speed. Even thou its not noticeable much on one layer, it will still add up.

If the acceleration is to high it can cause two problems (which will have similar effects).
Either the Steppers are loosing steps, or the pulley will accelerate so much that it can't grip the belt-teeth everytime. Both events will result in an offset, and the print is ruined.

Hope that helps...

Also, rapid back and forth moves (fill, etc.) can cause the structure to loosen or make noise if the acceleration is too fast.

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-David

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Yep, that helps. I sort of assumed that the firmware was smart enough to figure out that a lower accelleration would mean it would need to slow down for corners, but there was always a nagging feeling. I assume a faster accelleration could give sharper corners as well as being faster? Or is that poppycock?