I just found out that the drill press table I made last week to include
a vac channel for sanding is almost useless.

Last weekend while making the table I routed a 1/4 recess for hardboard
inserts... I thought I made a mistake when the hardboard sank lower than
the top...I didn't understand how that happened. But I figured I had a
brain fart. I went and bought a new board of hardboard 2 days ago and
today I find out not all hardboard is 1/4". Of three different samples
only 1 is actually 1/4"
The measurements a
.196 = 5mm
..225
..250
So even though they are all marked 1/4 they aren't. So to fix my sunken
plate I glued formica inserts into the routed channel to raise it. Now I
cut a true .225 plate and it is too high... Wish I known b4 I fixed a
problem that wasn't really broken in the first place. Now I have to
re-route the formica out.