Rough Cut Guitars

"POP QUIZ, hotshot(s)!"
Gor the beginners to intermediates (and with IG & YT reach crushing FB, a test of engagement here and whether to bother keeping this page active)
We all know what the two fences on each end of the piece are for, but why the block BEHIND it?
Context: I'm routing slots through 1/2" poplar on two adjacent sides, cold starting from pilot holes in multiple progressive passes. DISREGARD the Sharpie writing on that block.

Compare the edges of the first 2 routes (on the left) with the third one in. What do you notice?
'Scoring' cut lines along the outer diameter of your router bit path (where my finger is pointing) before routing ensures a clean cut with absolute minimum to no edge tearout - even when using a top-grade bit, like here (Amana).

Blade Guard Pt. 3

Blade guard Pt. 2 (and Top Tip flashback!)
When you only need half a hole, not the whole... hole.

Blade guard Pt. 1

A car with the OSHA logo has been parked outside my place until late every night ever since this.
Should I be concerned???
😀

Scarf angle sled: handles