David,

welcome to this Forum. Well those Germans, nothing better to do than making cuckoo clocks laugh laugh

Like Dave already mentioned( thanks Dave) I have experience in German Built TF. My favorite by the way.
Your clock however looks more like a log home with TF roof. You can contact me under my private e-mail if you want and will send you some pics of German style TF.

Not sure what square rule or other layout options are. But in Germany we were using perfactly square timbers from the mill. They get planed and then cut and fitted. And if you are really willing to get this type of frame cut you better have a least one Mafell Chain mortiser or else a lot of helpers that will cut all your mortises and tenons.

Byk the way: Are your clients interested in just a german style frame or also in the exterior frame exposure with brick or plaster infill?


Back to another post where I was asking for Hundeggers in my area: This is exactly why. A lot more joinery than in a traditional american Frame.