Ineed a block that will go between themounting block for the router and theZ mounting bracket that will extend the router pas the front of thc thshapeoko4 Pro that will allo me to cut box joint vertically

[WillAdams (William Adams (Carbide 3D))]

I worked up a plate for mounting a spindle to the machine:

Mafell Spindle with manual tool change FM 1000 PV-WS

Making a mounting plate for mine: [WIN_20210307_21_55_21_Pro] Almost got it centered, and aside from that and the two “test” holes the cut went fine — hopefully it fits as well as the acrylic test cut did. Here’s the file — should fit to an HDZ and the Mafell FM 1000 WS: hdzplate_adjusted_274.c2d (154.6 KB) Here’s a slightly adjusted version based on a test fit of the file above: hdzplate_adjusted_274_v2.c2d (123.1 KB)

which you may be able to adapt to this.

That said, are you committed to traditional box joints? There are lots of other joinery options.