Based on what you read in the thread to which you link, make a drawing of the parts.
Indicate clearly which parts you think would be difficult. In posts above and in the linked one, specific part numbers are used but then you go all hand-wavy with "studs that hold the bracket and knife square".
I think you are referring to part 153. There are alternative designs possible not using studs that would achieve the same end (like making the part from solid)
Note that part 151 is described in your manual as M8 but in the link above as M6, so you are best placed with your own machine to determine what is correct.
For all parts, you could 3D print prototypes to verify dimensions, or even, shock horror for a woodworking forum, make them out of cellulose-based material.