Buildplte-Holder X and P Series

i designed a Buildplate-holder for 7 Plates , designed in Stairs so you can see the front of every plate for reading or seeing the desing.   I designed in 2 parts so it fits on the printbed at once. i desinged conectors as well , i did not need any glue for fitting it . i printed standing on the Bambu-Logo→ less filament changes , also then is no support needed. printed in 0.20 layers , 2 perimeters , 3Bottom/Top. i did a pause before th toplayers and fill some steelballs in for some wight, so i used grid-infill 10%.