tag:blogger.com,1999:blog-37077541.post6895342433370170438..comments2012-06-24T14:32:18.696+01:00Comments on Building the 2mm 08 shunter kit: The bonnet sidesGramhttp://www.blogger.com/profile/17377489365894836172noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-37077541.post-78989729140115918462007-04-22T19:41:00.000+01:002007-04-22T19:41:00.000+01:00Hi again,Even cheaper drill bits, particularly for...Hi again,<BR/><BR/>Even cheaper drill bits, particularly for plastics/resin;<BR/><BR/>Make D-bits from steel rod/wire of appropriate size. Or ends of pins. <BR/><BR/>Select wire of appropriate diameter (there are tricks to reduce diameters). File the end square. File a flat near the end to form a D profile. Touch the end and the D with a sharpening stone. Result is one drill bit. Takes longer to describe than to make once you get the hang of the trick. <BR/><BR/>To cut metal, the drill usually needs to be hardened. <BR/><BR/>I think Henk wrote a longer version up some time ago.<BR/><BR/>- NigelAnonymousnoreply@blogger.com