Hi Steve, thanks for your fast reply. I already printed most of my clocks with PETG gears and for me it works just fine. To me the gears appear to be a bit more flexible but it they seem to work with little friction. However PETG prints less cleanly and a little bit slower, so for memore time and effort is required.

Hallo, you can‘t. Steve has modified it, for example adiitional bearings, hooks and the connection to the side parts.