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Best Drill Bit Size for R.R. Spike Installation?

Posted by nrvstorm on Friday, April 13, 2007

Well I stopped by Merri-Seven Trains & Collectibles in Livonia, MI the other day on the way home from work and bought enough HO railroad spikes to last me and a dozen others 10 lifetimes. Now I need to figure out how to install them on my Harmony Reso-Tone banjo. I used a micrometer to measure them and they came up very consistent at .037". One article recommends a drill bit about 60% of the diameter of the spike. That would mean about a number 75 bit. Does anybody have a suggestion as to which size bit would work best? I'd like to buy a pack of six of one size, instead of buying one of a bunch of sizes. Also, any other helpful hints would be most appreciated. Thanks! ~Norman V.

2 comments on “Best Drill Bit Size for R.R. Spike Installation?”

Joe Jakonczuk Says:
Saturday, April 14, 2007 @10:27:55 AM

I use a 1/32 drill which is .031 in a Dremel tool. Let the drill stick out the depth you want the hole. Put a piece of tape on the fingerboard so you don't mark it.

Joe Jakonczuk Says:
Saturday, April 14, 2007 @10:29:28 AM

Remove the tape and tap the spike down to a feeler gauge. I use .016 under the spike.

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