28 minutes ago, IrishWoodCarver said:

Based on what you see, if you were looking at the cabinet from the right end - would it have to twist clockwise - or - counter clockwise?

 

Thanks (wish you lived closer - LOL)

 

Bob

A racked cabinet can be racked in couple different ways. One side could be out and you shim or both sides possibly one on front one in rear.  Hard to tell you will need a shim pack, level and a square to check it.  Others may have a trick or tip to make this easier.

Even if the cabinet is level and the doors are twisted the only way to fix it is to twist the cabinet to match. No unusual to do thid. Making new doors might have a reverse effect...

 

Not unusual when installing cabinets to uneven or tweak a cabinet to make something work.

1 hour ago, BillyJack said:

Even if the cabinet is level and the doors are twisted the only way to fix it is to twist the cabinet to match. No unusual to do thid. Making new doors might have a reverse effect...

 

Not unusual when installing cabinets to uneven or tweak a cabinet to make something work.

 

 

Interesting, good tip to know.  Now my question is could the weight of the heavy books have had an bearing on this issue?  Or could the cabinet on top of another cabinet have caused it?  

Anything can cause it. It just depends on how far one wants to dig for the answer. I think over time the resting in  place has created the issue, but plywood has a tendency  to warp on its own as well. 

 

I only offer a quick fix but base  shifting is probably the deeper answer...it's kinda like a  4 legged cabinet needing a shim on the 4th leg to keep it from rocking. If the shim goes missing with enough time and weight the 4th leg will almost always find the floor...

Might consider the effect of "creep":  natural tendency over time for any solid object to "flow" into a new configuration based on steady stress.  I note your doors have 3 hinges, which I think is enough.  So maybe it's a "gravity always wins" effect:  weight + time + thin cross-section = creep.  Might not matter how many hinges.   You mentioned laying straightedge on the door panels:  what did it show?

On 2/4/2020 at 8:56 AM, Gene Howe said:

To my knowledge, aside from different uses, i.e exterior, interior, underlayment, etc., BB is only graded by it's face sheet quality. Unlike other plywoods that are graded as to interior laminate quality as well as face sheet quality. Although, I've never had a sheet of true BB with interior voids. The suppliers I use cater to cabinet makers, though. It would be interesting to know how their buyers determine which ones to stock. I'm sure they are a mite more discriminating than those at HD, lowes or Menards.

supply and demand gene.

* meant to say "shims", not 'hinges"    Fingers and brain not operating on same track.  I'd edit but can't find that button.