This week I reused an old buckle and made a new belt for daily wear. Nothing too fancy, just a single strip of veg tan 7/8 oz leather.
For the finish I went through these steps:
Dye-prep, and then dye (Fiebing's Pro Dye)
Wait an hour or so
Apply neatsfoot oil (not too much)
Wait a day or so
Burnish the flesh side with Tokonole
Wait two hours or so
Finish with Resolene
Now, I am not dissatisfied with the resulting belt, but whenever I make a belt like this, the backside quickly develops this — what to call it? — buckling? crackling? bunching? On this photo the middle image is the backside at the tongue end:
Is this simply inevitable with a belt made from a single strip of 7/8 oz leather? I've read some topics here about problems with a Resolene finish cracking, but this seems to be the leather itself which bunches up. I get the feeling I am missing something really obvious — either that this is just how it works, or that there is a better way to do this.