Correct, it scrapes off a few mm's from the front volume.
UltiArjan
about 8 years
I like the simplicity, use something similar myself ( https://www.youmagine.com/designs/um2-minimalist-front-panel )
This does however limit the max build size of the Ultimaker3, as when you use the max size, on the front of the bed, the head is sticking out a bit...