Simple Holder for polishing pads in two variants with 125mm and 75mm backing plate.
(with biggest diamter ~140-150mm and 90-100~mm)

75 : 65mm high and 105mm deep
125: 100mm high and 150mm deep
Both 205mm wide.

1,6 wall and base Thickness. Inclined wall thickness reduced to have a layer thickness auf 1,6mm.