I actually try and make "useful" parts for when me and my GF continues to renovate and build on our house.
Instead of having different things to put between the porch wooden boards when we attach them - I wanted a measured wedge to go between that are all the exact same measurement.
So, we decided to go with 2,8mm... not only a fair distance - but about the size of seven 0,4mm nozzle-widths.
We also added a 4,0mm wedge, since there are always boards that eventually becomes a little "off" - so by adding 1,2mm to some boards, it catches up after a few rows.
Even though the measurement is "written" on top - I suggest to print them with different colors per size. :)
Hope you find them as usefull as I have
Make sure that you print it in accordance with the attacheded slicing-screenshot so that it is strong when you pull it out from between the boards... you´re gonna need it.