When I was at school we used to make such a device with a saw. Here, of course, I immediately fired up the laser and made myself a pantograph, which magnifies by a factor of 2. It could be screwed together with screws, which would increase the accuracy even more and would also be easier to assemble. But I wanted to make everything out of wood for the time being. The holes could also be adapted so that the pen fits better. I wanted to make it a bit bigger so that I could use more pens, so I wrapped tape around the pen.
Take the file from the xTool page and load it into the program. Place the parts so that they are cut from a 3 mm thick piece of wood.
Glue the first parts together. I recommend starting with round parts as you can see in the picture.
Glue the remaining parts together. Make sure, however, that the parts can still move in relation to each other. You could also use screws instead of the wooden bolts. In this case, you would have to adapt the holes to the screws beforehand.
Stick a sheet of paper on the table and the holding base.
Place two pens in the device and start drawing
Alternatively, you can also draw smaller.