I used an ice pick, kept the point protected by an old wine cork, I hate sticking myself when fumbling for tools, all that blood on my work is such a pain to get off.
![Grin ;D](https://www.stevedgood.com/community/Smileys/default/grin.gif)
I've used a lead pencil too but the point can break off, never tried the ball point.
Awl right now we've got it covered. LOL
Gabby