02-06-2015, 05:35 PM
I want to add details west knuckle coupler and bracket casting to a couple engines I'll be working on. It says to drill a .031" hole, what size drill bit is that?
Pin vise bit number question.
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02-06-2015, 05:35 PM
I want to add details west knuckle coupler and bracket casting to a couple engines I'll be working on. It says to drill a .031" hole, what size drill bit is that?
02-06-2015, 09:29 PM
The chart I have shows .031 as a 68 drill.
David
Moderato ma non troppo Perth & Exeter Railway Company Esquesing & Chinguacousy Radial Railway In model railroading, there are between six and two hundred ways of performing a given task. Most modellers can get two of them to work.
02-06-2015, 09:32 PM
A #68 bit is .031", but the 1/32" bit will work just fine, too.
If you really want to cover the spectrum of sizes, you'll need a set of fractional bits, numbered ones, lettered ones, and probably metric ones, too. Wayne
02-07-2015, 02:50 AM
BR60103 Wrote:The chart I have shows .031 as a 68 drill. Is there any chance of getting a copy of the chart, or one that shows conversion of drill-bit sizes for inches/millimetres/numbers? It would be a really useful thing to have. Please - pretty please!
02-07-2015, 06:31 AM
Thank you for the info guys. Details west castings usually have the number of the bit you need to use, I thought it was odd they only had the size in inches for this casting.
02-07-2015, 08:07 AM
Cancel my previous request - an internet search has provided several - thanks anyway
For reference this is the one I will be using <!-- m --><a class="postlink" href="http://tubeamplifierparts.com/handy-amp-info/drill-bit-size-chart.html">http://tubeamplifierparts.com/handy-amp ... chart.html</a><!-- m --> - there is a large number of other choices
02-07-2015, 09:13 PM
Shortliner:
The chart I have came from (IIRC) an early issue of Model Railway Journal. The NMRA has it in their data sheets D1c. It's also shown on the little pack of drills that I have.
David
Moderato ma non troppo Perth & Exeter Railway Company Esquesing & Chinguacousy Radial Railway In model railroading, there are between six and two hundred ways of performing a given task. Most modellers can get two of them to work.
02-08-2015, 03:13 AM
Thanks, David
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