Can you tell what's about to happen?.....
The owner of this here guitar wanted the old worn frets replaced with Super Jumbo Stainless Steel frets - as well as a recessed Floyd Rose cavity for more upward pull on the tremolo. You can see there has already been some custom routing for the bridge pickup, exposing the wood grain. The top routing is done in 2 steps, sized according to the bridge style. .
This old guitar used small frets with a small tang size. The super jumbo has a large tang to support the crown, so I had to cut the fret slots in a few thousands of an inch so that the new fretwire would seat. I vary my fretting technique depending on the guitar - this one I felt best to first seat the fretwire by traditional hammer method, followed by press to insure consistency. The biggest concern when changing fretsize is of course compressing the neck. The best way to avoid this is to insure the frest slot width mates well with the fretwire you are using. Often you will need to either modify the fret slot or fretwire itself. An overly compressed neck will be back-bowed when you are done your fretwork. A result showing that you will need to remove the frets and start over...