A Andrew New member Nov 9, 2010 #1 I'm drilling holes for a 4" speaker enclosure, but the biggest drill bit that I have is only 20mm. How can I make a decently round hole of this size without a drill bit this big?
I'm drilling holes for a 4" speaker enclosure, but the biggest drill bit that I have is only 20mm. How can I make a decently round hole of this size without a drill bit this big?
