Thank you all for the nice comments.

Hi Bruce. I'm not going to lock it down- just retain it from sliding of shifting position on some 3/16" pins in the bottom of the extensions. I will try that big square to see hoe parallel it is. It sits flat on all four pins right now.

Hi Ryan, I liked the solid pins as it gives the frame a little more weight. I don't like the idea of movingĀ  the frame up and down for different jobs either. Room in the shop is a problem for me too. This laser can't be in my regular shop because of all the dust and my wife does not want it in the living room !!!!

Cheers, Jim ........................ Variety is the spice of life...............Learn something new every day