Microjig Gripper Clone 3D (Updated)

Woodworkers here it is.... the Microjig Gripper Clone 3D.

I love the Microjig Gripper but no local seller in this far West of Australia. So I had an idea and had a look at a few pictures and just eye ball a copy on CAD 123D Design.

The handle was the basis of my design. So you will have to download handle and wing nut from the following designers

Xoan
Handle - http://www.thingiverse.com/thing:294347

Davross
Wing Fix Nut - http://www.thingiverse.com/thing:495543

[Updated 01/15/2017]
Saw this great cam spacer design for the riser from https://www.youtube.com/watch?v=De51MrQxHso (CrazyRussianWoodShop).

Modified my design to include this extension. Using a
https://www.bunnings.com.au/prestige-m6-x-13mm-zinc-plated-type-d-screw-in-insert-nut-4-pack_p4011118
https://www.bunnings.com.au/romak-m6-x-15mm-socket-head-cap-screw-6-pack_p2400098