We have in fact designed UN_1R to cater for this particular requirement: if your needs do not justify the purchase of a new cleaner, you can opt for this one
This way, once all standard operations have been performed, the frame will be moved to UN_1R where work can be terminated in the inner part of the corner
UN_1R complies with modern system requirements inasmuch as it has been designed to clean any type of surface (linear, sloping with double slope and radiated) and on request (ref. KIT461) it can be equipped with a supplementary tool for working the glazing bead side
An important solution consists in having the 0 point inside the corner: a fundamental principle and the same as that adopted on CNC cleaner