Prusa Sheet Cradle
thingiverse
Yes, I've used Ikea Lack tables as a base for my Prusa 3D printer. I actually have two of them, and they work well together to provide a stable printing surface. As for the spring seats, I do use multiple ones to ensure that the printer is properly secured and can move freely without any obstructions.
Download Model from thingiverse
With this file you will be able to print Prusa Sheet Cradle 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 Prusa Sheet Cradle.