The important parts of the sliding hinge are its points of articulation.
I used a PDF image to trace over a stock image of a hinge then I reference the drawing into autoCAD and made some measurementsĀ Ā to base a prototype off of.
I found it difficult to map the arcs of multiple axises as all the joints move relative to one another.
By using circles and arcs I as able to map where joints would be and should move.