Problems with 20/20

[Andrew Duerner]

If your talking about the standard 1 inch profile, I have seen a thickness change also. The gearbox we make is designed with a snug fit that slides into the channel of the 80/20. This is sized to channel ordered from McMaster about 3 months ago. Some channel that was ordered from McMaster about 9 months ago shows a visible difference in the thickness of the extrusions. I haven't measured it but I think your about right on the change, about .010" - .020" decrease in thickness on the newer channel. One question, with thinner channel, why would your slide not work, besides being a little loose?