I bought this cheap kid's guitar at Wal-Mart. It would not intonate very well and was very quiet. I have also seen cheap guitars at the local Mexican market for under $20. I decided to make mine into a Dulcitar.
Step 2: Get ready to remove some frets
You will need to pull off some frets to give the Dulcitar the diatonic scale. I used a pocket knife to score along the sides of the frets I was going to remove to make them easier to pull off. You will be removing the following frets, starting with the first fret closest to the nut being number 1.
1, 3, 6, 8, 10, 13, 15, 18, 20
Step 3: Remove the unnecessary frets
Use a needle nose pliers to remove the frets from the last step. You might have to wiggle them a little, but they should pull straight out of the neck.
Step 4: Here's what the neck looks like
After you've removed the extra frets, you may need to use the knife to smooth out any glue or rough spots from where the frets had been. Don't worry about the grooves that are left, they won't affect the playability of the instrument.