As Kent said, the Hart has one-pin scales. I wanted to make a novelty item (a cigar razor) and didn't want an extra pin in the back so I carefully set up the table saw and put two passes into the wood (edit: actually 1 standard pass and a 1/2 width pass). Then used a saw blade and evened out the back. Cut the whole thing to length and mounted the blade and pinned it.
Oh... and it is a PITA to get washers and blade all aligned. PITA... PITA...
I'm also considering repeating it for another blade that I have (or maybe a GD to make damn sure it works). But it seems fairly straight forward. Use good wood and be sure the slot is wide enough and the solid wood deep enough because there will be a tendency for the back to split out if the front is bowed out too far. Once pinned, it should be fairly secure.
Here is the novelty one that I did:
View attachment 254224
Problem I have is that I have a nice piece of wood that's about 3/8" thick. Guess I can go buy a thin kerf blade and split it in half. I don't have access to a band saw, only table saw.
+1To me the contrast of the scales and wedge looks nicer to me