Answer by Criggie for How do you drill concentric holes of different...
Are you able to drill the bigger hole first?That way there will still be some wood there to hold the smaller drill bit, and the pointy pilot tip in the middle will act as a center.If the workpiece is...
View ArticleAnswer by Monte Glover for How do you drill concentric holes of different...
If you use brad point drill bits drill the larger one first then carefully center the smaller one over the point (left in the hole) of the larger one then drill through. OR Drill a very small hole as a...
View ArticleAnswer by FreeMan for How do you drill concentric holes of different...
Similar to the other answers, but for any drill bit type:Drill a very small pilot hole deeper than the shallowest, big diameter hole. Use a standard twist bit. Limit depth if this is to be a stopped...
View ArticleAnswer by MTA for How do you drill concentric holes of different diameters on...
You can drill the smaller through-hole first, then use a counterbore tool. The end of the counterbore will use the through-hole as a guide and will cut a flat-bottomed hole of a larger size exactly...
View ArticleAnswer by mmathis for How do you drill concentric holes of different...
Forstner bits have a small point on the end which leaves a slight indentation in the wood in the center of the hole. Use this to align your drill bits after changing them. But, to do this, you'll have...
View ArticleHow do you drill concentric holes of different diameters on a drill press?
Often times I need to drill maybe a 1/4" hole, all the way through the piece, and then a 3/8" or 1/2" hole half way through the piece in the same spot. It is often imperative that these holes are...
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