I want to build a completely belt driven clock. (Hey way not?)

My plan is to use 1/4 inch series XL belts and the associated pulleys to run it from a synchronous motor.

Has anyone had any experience splicing these belts? I can easily make up a jig to hold the belts in the right position and in the right time but what then do I use to join them and also what type of an adhesive works well with these things?

I plan to make the rest of the clock out of clear acrylic and want to use a 72 RPM motor to supply the drive so that the belts will actually be moving. That means 24 hr a day flexing.