... with 6 arms you normally have enough stability ... more are used mostly for additional (mainly tilting) axes ... or if the head ist too long/high, so it wouldn't be stable when moving fast ...
Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [
reprap.org] -- Deutsche Facebook-Gruppe - [
www.facebook.com]
Call for the project "garbage-free seas" - [
reprap.org]