Sooooooo. I managed to get the stl output from jsketcher working and added a print button to the cad model pages in the web site. It is all working well now.

You don't evin need any cad software on your machine. Just a web browser.

Design your model on the web site. 

Click print.

Select your slicer settings.

Approve model for printing.

Get an email when its complete.

I think we have managed to get the trifecta with this one.