Drawer slides - full extension - adjustments possible?

[Kevin Jenness]

Hello,
I just installed a cabinet of full extension drawer slides. They slide smoothly so my drawer width is good. No binding. I took a lot of care to keep things level, True and within tolerance. The only issue I have is that when the drawers are fully retracted, about half of them retract fully on one side, and on the other side I can push it with my hand and get an extra two or 3 mm. My best guess is that the frame is not exactly 90°. I did check it throughout the construction and some of them are indeed not square despite my best efforts.

I thought that maybe there was some adjustment I can make so that when fully retracted all the faces are in plane with each other. My best guess is the only way to fix this is to adjust the drawer front depth on one side. Is my analysis and solutionCorrect?Also if I am to adjust the depth of the front which I wanted to attach with a Brad nail gun, what is the best way to shim as I don't want to bend the front?

Thanks

Are you saying that the drawer boxes are out of square and the applied drawer fronts are not in plane? If so you have a few options.
Remake the boxes.
Taper the front of each box so it is square to the sides.
Taper the back of the drawer fronts.
Shim between the boxes and applied fronts. Make sure the fasteners including the pull or knob screws are supported by shim material to avoid bending the front.
With any of these options you may have to relocate the slide members fore or aft on the carcase or drawer box so they bottom out simultaneously. Sometimes you can tweak the drawer front position slightly in this way or by shimming between the slides and the carcase if the boxes are a bit undersized. Some undermount slide clips with depth adjustment can help the problem, but it's a heck of a lot easier to start with square boxes.