rebfan04
Member
Can I use a 12mm bit for a 15/32 size and a 10mm bit for a 25/64 size, or are they the same bit?
Drill Bit Sizes
- Thread starter rebfan04
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Chthulhu
Member
15/32"=0.46875"
12 mm=0.47244"
25/64"=0.390625"
10 mm=0.393701"
In each case, the metric size is about three or four thousandths of an inch larger, so unless your tolerance is much tighter than that, you should be fine.
12 mm=0.47244"
25/64"=0.390625"
10 mm=0.393701"
In each case, the metric size is about three or four thousandths of an inch larger, so unless your tolerance is much tighter than that, you should be fine.
randywa
Member
I don't know if this helps, but here's a link.
http://www.hamuniverse.com/antfrac.html
http://www.hamuniverse.com/antfrac.html
rebfan04
Member
Tolerance
Thanks Mike. This day and age I am much more tolerant than that!
Thanks Mike. This day and age I am much more tolerant than that!
LeeR
Member
Another useful tool is Google "convert".
Just type in convert (15/32) inches to mm -- the parentheses around the 15/32 are required to convert that to a decimal number. You can use this to convert almost any measure from one unit to another (lbs to kg, $ to yen, etc.)
I own a set of machinist drills (numbers and letters), so if I need to sneak up on the correct size drill, these really help, since they fill the voids around 1/64" incremented bits.
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leestoresund
Member
Decimal equivalents
Try this:
Try this:
Use the Drill Bit Cheat Index http://www.penventory.com/inv.pl?command=drillbitcheatform to find out the closest bit size.
Wade
Depends
2. I used american on a jr gent 1 kit that called for metric, had others tell me they used metric on the same kit and both worked.
1. they are not the same size the metrics are a tad bigger.
2. I used american on a jr gent 1 kit that called for metric, had others tell me they used metric on the same kit and both worked.
Neededwill
Member
Maybe I am not looking hard enough but is there a list of drill bit sizes that could be purchased when pen making? I would like to buy a set or purchase individually but as a beginner I have only done 7mm pens but want to know which other ones to buy so I have them when I move to other style pens.
ed4copies
Local Chapter Manager
It's not that simple!
There are over a dozen sizes that I used regularly and a couple dozen more that were "once in a while". If you purchase the HF 120 piece set, you will have nearly all you need that are under 1/2". Notably, you probably want 7, 8, 10, 10.5 and 12.5 mm as well.
Over 1/2" you probably will need reduced shank, which gets pretty pricey and I would only buy the ones I need. For pens, I don't THINK there are any metrics you need above 13.3---but I would not bet that there are no others "spec'd out" on some kit instructions.
SerenityWoodWorks
Member
A couple of different routes you can travel...one.. at most of the sites where you will order your pen kits, at the bottom you will find where they will sale you the drill bits needed...OR..I would recommend purchasing a full HSS drill bit set in Standard and Metric and a drill doctor. These are things that will last you and ofcourse be used for much more than jsut making pens.
IN the library MR Mustard with a rope. oops wrong reference try this article in the lAP library. http://content.penturners.org/library/general_reference/conversions.pdf
copy it to your desk top.
copy it to your desk top.