Ever tried to saw small parts on a jigsaw. Tried tomake square cut on it? Here is your tool in two versions. I've made the first version. V2 has some inmprovements.

The print is not totally square cause bij deformation during printing. One side came loose from the powdercoated plate (use a brim) I'v' ruins my satin plate with a ASA print :-(.

For the second version a made it a little longer, there is cover for the saw blade. Safer when not in use cause it covers the blade at the end i've foreseen a stop so you can't saw in the block. In the runner (long part that slides on the side of the table there are 3 recession witch kan be filled incase that the print is not square. You could remix it whit some treated wholes to make it adjustable .