Fancy Shmancy In-box

Step 5: Cut the spline grooves in the trays and the frame at the same time

Now its time to cut the spline slots for the trays and the bottom of the frame. This is 1/8 thick (blade kerf)
when you cut the actual splines use lots of trial and error. this can be a tedious step but it makes the project that much better when done correctly.
then just glue them in place and wait overnight.
after they have cured overnight use a flushcut saw to trim them flush. and then sand sand sand some more.
now you need to round over the corners on the trays and the frames. use a router and router table with a 1/2" roundover bit.
sand some more.