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NW Washington | I think Jon is referring to these bits that the flim-flam guys sell at ag shows and fairs across the country drilling into ceramic tile, brake rotors and anything else you can imagine. http://www.artu.com/drillbits.htm
In a pinch you could probably get by with a good quality cobalt or HSS drill bit if you take it easy and use a good cutting fluid on the bit, like Tap Magic. A masonry bit might work too. A spring has to be strong and flexible, but not necessarily hard. http://www.tapmagic.com/ | |
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Can you drill a hole in a leaf spring?
