1x3 Plate
thingiverse
1x3 block to build a platform for the flower, same size as Large brock flower by glx0711 https://www.thingiverse.com/thing:4283065 Turn off Brim/Skirt to fit on a ender 3 bed and watch Video on how to remove the gray area for ender 3 https://www.youtube.com/watch?v=Il1sierB4Yk&ab_channel=CHEP see Cura .3mf file for orientation, I use custom supports to help bridging
Download Model from thingiverse
With this file you will be able to print 1x3 Plate with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 1x3 Plate.