Of course, once you know how easy it is, you can save big on discounted belts. Unlike other clothing items, when clearance time comes and nothing is left besides super small and super large--you can still benefit from buying the size 42 belt
Now that I know how easy the screws are, (and thanks for the suggestion of using a drill...much cleaner than a stanley knife), I will look for belts like this that are too big.
Belts where the buckle is sewn on with folded over leather (like mine) are a little more work...I do have one belt that would be even easier though. It is one of those black/brown reversible jobs and the buckle is held on by a pair of set screws that pinch the leather. To shorten, just loosen screws, cut belt, reinsert and tighten.