From time to time I needed a quick reference for setting up blade height on a table saw or for quick addition or subtraction when making cuts. Also great for setting tool height on a router table, or for placing between the fence and work piece on a drill press.

The measurements are recessed on the models so they do not interfere when stacking them to get measurements in between. For example, stack 1mm and 2mm to get 3mm (a common blade kerf).

If you find a useful size missing, hit me up and I'll add it.

Printing

Print them upside down (with the measurement text on the print bed) so there is no chance of the text being raised at all. Top and bottom surfaces need to be flat to facilitate stacking.

I printed these with PLA to minimise shrinkage (in my opinion the good thing about printing these with PLA is that it does not shrink as much as other materials). I used a 0.1mm layer height and 100% infill on all but the 123 block which was printed with 0.1mm layer height and 15% infill.

I also made a tray to keep them organised and printed that in PLA at 0.4mm layer height and 15% infill.

Accuracy

If your printer is dialed in, you should get pretty good tolerances. I managed to print them to within 0.07mm of their stated measurement which is completely acceptable for woodworking. However your mileage may vary and I recommend you print a few, say 2mm and 8mm and measure with calipers to see if they are within an acceptable range for you.

If you need precise measurements this may not be for you. You could try to sand them down on a flat surface with 240+ grit to get them to their stated measurement (if they are slightly bigger). The alternative is to buy a precision set. I just didn't want to spend $100 or more on a set when all I need is close enough.