Here I go with another long one.
Not sure if this is heresy on the Creek (it would be in the Neanderthal Haven!), but I actually pulled out my Kreg jig this week. I bought it when I was a rank beginner in woodworking, and I can count on one hand the number of times I've used it for a project since then.
I needed to build a new table extension for my new router lift, with a now-standard 9-1/4" x 11-3/4" plate. The original router plate is a 20-year-old Rousseau at 9" x 12". So, new table.
I built mine from a 3/4 Baltic birch top on a frame of 2 x 3 pine, on edge. The top edges of the pine members were carefully jointed to be flat against the plywood. The two long members run the 42" length of the extension, and the 7 cross pieces butt into the long members.
I used the Kreg to make butt joints on all the cross pieces, mostly for stability of the frame during assembly, not for strength. After all, the width of the extension will be held together by the saw's rails.
But I also placed an array of Kreg joints between the tops of the frame members and the plywood, to hold the plywood firmly against the frame –– and reduce vibration. I carefully and gently torqued those top screws so that I could not slide a sheet of paper between the top and a frame member. I don't believe I stripped any of the screws.
Here's the question: Should I have glued at least the top Kreg joints? (The butt joints don't need it.) I wonder if the vibration from the 3-1/4 HP Porter Cable 73182 will eventually loosen the screws in the pocket joints. If so, this would lead to gaps, that would produce noise, that would in turn lead to more vibration, etc.
I know the answer: yes, of course I should have used glue. I'm so tortured by the question that I'm considering unscrewing everything and redoing it with glue. Augh. What do the sages here say? I'll sleep on the decision as I await the wisdom to come.
Boy, I hope I don't have to undo all this screwing. But knowing me, I probably will do it anyway. Talk me out of it?