I made some cabinets for a stable a while back out of rustic hickory. I was back at the site saw the cabinets. The doors are inset with strap hinges mounted on the front. The problem is they expanded at least 3/16" each. They are pair of slab type doors 16" wide x 36" tall. I couldn't believe they overlapped at least 1/4". I will take them off and cut them down to fit again. The room is heated and has air conditioning and not sure how much they use it. Has anyone had this happen?
From contributor L:
A solid wood slab door would be the worst culprit for expansion. If the woodshop and home/barn are not the same conditions you will experience shrinkage or expansion. The only problem with cutting the doors is when the dry weather comes along. You may now have unsightly gaps where they once overlapped. The best answer if you want to cut them is to make them very close, don't do your usual 3/32" gap. So when they shrink back up it won't be so large. Also, are they finished on all six sides. Oil doesn't count. They need to be sealed as best possible to minimize the expansion and contraction.
Finishing the doors will slow the changes in dimension, but I don't feel it will stop it. I always have felt that if the material is exposed to the higher, or lower humidity, it will eventually change its dimension given enough time.
Note: Without heat, this value will be the same all year. (If you check the weather records for almost the entire USA, you will find that the outside RH changes very little from winter to summer. It is not drier in the wintertime). So, I suspect that the doors are now 11% MC, which means that they were about 7% MC (35% RH) when you made them (a standard value).
The heat in the stable where the cabinets are located will dry the wood out during the heating season, perhaps back to 7% MC. If it is drier, the doors will shrink more than 3/16". You might consider a cleat on the back to "hold" the doors, but the cleat will only hold the back side and not the front, so then you will have warp and some overall swelling and shrinking too. Perhaps the best choice is to use an overlapping joint that has enough overlap to allow for expected movement.