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A comment on Jello 3D Printer (2013). Parent comment

Re:Jello 3D Printer (2013) by londons_explore on Thursday March 18, 2021 @07:48AM (#26501680)
Except that a CDROM wants to be able to seek quickly (say 100 milliseconds) while also read a disc at 1x speed (taking 75 minutes).

Having a DC motor which can run smoothly across 5 orders of magnitude is pretty much impossible. Stiction will always be more than 0.05% of the motors power output.

You therefore have to use a "go-stop" approach based on laser feedback instead.

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Re:Jello 3D Printer (2013) by DoingIsLearning on Thursday March 18, 2021 @08:33AM (#26501979)
'Stiction' - the static friction that needs to be overcome to enable relative motion of stationary objects in contact.

As a non-native english speaker I assumed that was typo and had to search for it. I will also assume I wasn't the only one.

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