In this episode we will look at building a set of hold down clamps for the QU-BD TwoUp 3D DIY Printer kit. As you might recall we where having issues with the melamine bed so we switch to glass however the shaking of the when doing in-fills was ruining the prints so we designed a set of clamps to hold the glass in place firmly. The glass bed is 11.5 inches long and 7 inches wide. We left a little room length wise as we want to add thumb screws to the bed for leveling in the future. In addition, the glass is +/- 0.16 inches in thickness and the clamps are 4 inches wide.