Quote Originally Posted by Voicecoil View Post
In the final analysis, rigidity is the most important thing, so check the figures for the moments of inertia (Ix, Iy) for the different profiles before making your choice. There are also other vendors/manufacturers such as Motedis, Item, Maunsystem, Misumi and KJN in the UK.
Thanks for you answer. I checked the moment of inertia and there is indeed a big difference between the 45 series and the 40 series profiles. The 45 series is way more rigid. Since the rigidity of the base is the most important thing, maybe it is a good decision to spend a bit more on the better profiles?