My Fret Saw Jig

I have put dulcimer kits together but the came with slots for the frets already cut.  I am now going to try cutting my own.  I saw that great DIY Fret Saw but I don't need to make a lot of fret boards but only a maybe a couple.  I bought a plastic Rafter/Speed Square from Harbor Freight for $3.99 and cut it down smaller and bolted on a piece of aluminum angle.  My saw is from Stew Mac and I bolted a piece of 1/4" Plexiglass to it for a depth stop.   My flat building board is raised on a couple of short 2x4s on  the ends so I can clamp to it.  I plan on clamping the fret board to it after I mark the fret locations using a C. B. Getty plastic template.  Then I'll clamp my fret sawing guide to it before sawing.  Not sure if it will be a dulcimer or a dulcimer fretted cigar box guitar.