surface printing accesories

I design and print 4 corners to hold in-place the printing surface (glass) with suitable buttons to adjust the level of the bed. with the corner of the bed i can replace the printing surface very easy and stay leveled.
i add the solidworks files for any changes needed.
Please check the clearance you have in your printer before using the buttons for adjusting the bed. it could be to big for some standard printer using standard circular rod axis for the bed.
The pictures show the assembly of