Tell us about yourself!
How is the stability of the desk in the raised position? I am tempted by the simplicity of your design. However it looks like when it is in the raised position, the fit between the inner and outer columns would be the main thing keeping the desk top from rocking side to side. But if I make the fit too tight, I am concerned that seasonal expansion of the wood could make it bind. I imagine the issue would be that much greater if you used the longer linear actuators you suggested. Is this something I should be worried about?