Its been 288 hours (12 days) since Board #1 was placed outside and 264 hours (11 days) for Board #2 so I thought I would update. There has been some rain this week but lots of sun and wind and the trees are spreading all manner of pollen and debris in the air. The Sun’s UV rays have all but made the sharpie marker unreadable but I have a map and can still make it out enough to see.
Here are the two boards where they are residing on the patio.
And here are the close-ups of the samples.
As for Board #3 in my house. Its been 240 hours (10 days) and as expected, the indoor protection in a constant environment has them all still in fine shape.
