<div dir="ltr">I assume you mean brad-point for the initial, rough-in drilling. I'd think you'd want split point for the chase bit. <div><br></div><div style>Paul Bruesch</div><div style>Stillwater, MN</div></div><div class="gmail_extra"> <br><br><div class="gmail_quote">On Wed, Mar 6, 2013 at 1:57 PM, Noah Frere <span dir="ltr"><<a href="mailto:noahfrere@gmail.com" target="_blank">noahfrere@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div dir="ltr">I searched my not inconsiderable archives for an answer, but have come up empty-handed. I am using 1/0 Denro blued tuning pins in a new multi-lam Maple pinblock, and need to order the drill bit. I'd like to double-drill - makes sense. The Pianotek catalog recommends, in effect, a drill bit .016" to .021" under the diameter of a 2/0 pin in a multi-lam pinblock. Following that logic, I could use the .250" on the first pass, and the .261" (.015" under) or .257" (.019" under) drill bit on the second pass. Also, I like the idea of the brad-points, but also like the idea of the other ones, which are "slow spiral." Any recommendations?<br> </div> </blockquote></div><br></div>