hello all, can someone tell me what actual size a #79 drill bit is? i cant seem to find one at my local tool store. thanks!
what actual size is a #79 drill bit?
- Thread starter trainsteve2435
- Start date
Your LHS should be able to set you up. Over the years I've gotten a couple of sets at my LHS. If all else fails any of the ehobbyshops have them.
If you get really stuck, ask your jeweller where he buys his tools.
Hardware stores rarely stock anything in the sizes we use. They may go down to a #4-40 screw (I think they're used in electrical sockets) but I only found one with #2-56 and I bought a box of a hundred or so -- I'm almost out of them.
Hardware stores rarely stock anything in the sizes we use. They may go down to a #4-40 screw (I think they're used in electrical sockets) but I only found one with #2-56 and I bought a box of a hundred or so -- I'm almost out of them.
F
Fred_M
Conversion charts
Number Sizes
Letter Sizes
Most drill sets stop at #60, which in 1/87 is pretty durned big
There are sets to augment these regular sets that run from #61 to #80. Also you can buy individual drills. Locally, you might check your dremel supplies at the hardware or home improvement store. Dremel has a set, but I don't think it goes that small.
Here are some suppliers I have not ordered from:
http://www.discount-tools.com/drillsindexmain1.htm
sets and individual bits - High Speed (HSS) is probably best for most of our uses
http://www.drillbitcity.com/index.htm
They have small numbered set for under $10, resharpened. Caution: these are carbide, which is very sharp and able to drill hard materials, but it is brittle and probably not suitable for hand held power drills. Maybe OK in a pin vise if you have a steady hand, or a drill press with caution. Break one off in you work and the games over.
http://wttool.com/Merchant2/merchant.mvc?
Site is slow as molasis, but the price is right on HSS # bits, 27 to 54 cents range.
Of course, there's always Harbor Freight if htay have them that small:
http://wttool.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=WT&Category_Code=01420006p
TiN plated is OK, if it's HSS underneath and you sharpen it, it's HSS again instead of TiN. Probably makes no difference when drilling softer materials.
Cobalt is probably overkill, unless you plan to drill into harder metals. My experiance has been that it's easy to work with, similar to HSS.
Carbide and carbide tips use with caution.
Number Sizes
Letter Sizes
Most drill sets stop at #60, which in 1/87 is pretty durned big
There are sets to augment these regular sets that run from #61 to #80. Also you can buy individual drills. Locally, you might check your dremel supplies at the hardware or home improvement store. Dremel has a set, but I don't think it goes that small. Here are some suppliers I have not ordered from:
http://www.discount-tools.com/drillsindexmain1.htm
sets and individual bits - High Speed (HSS) is probably best for most of our uses
http://www.drillbitcity.com/index.htm
They have small numbered set for under $10, resharpened. Caution: these are carbide, which is very sharp and able to drill hard materials, but it is brittle and probably not suitable for hand held power drills. Maybe OK in a pin vise if you have a steady hand, or a drill press with caution. Break one off in you work and the games over.
http://wttool.com/Merchant2/merchant.mvc?
Site is slow as molasis, but the price is right on HSS # bits, 27 to 54 cents range.
Of course, there's always Harbor Freight if htay have them that small:
http://wttool.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=WT&Category_Code=01420006p
TiN plated is OK, if it's HSS underneath and you sharpen it, it's HSS again instead of TiN. Probably makes no difference when drilling softer materials.
Cobalt is probably overkill, unless you plan to drill into harder metals. My experiance has been that it's easy to work with, similar to HSS.
Carbide and carbide tips use with caution.
I have found http://www.mcmaster.com/ to be an invaluable source for small screws, drill bits, brass tubing, etc,etc. The site is easy to navigate and their prices for parts are a whole lot less than Micro-Mark, Walthers, or your local hardware store.
Angus Macdonald
Angus Macdonald
Good to know about carbide...it does break, and when I mean break, I mean shatter...I am glad I at least wear glasses, though I wish I wore more with these things...I use them mostly with my drill press, but I have been using them to drill out some metal posts on IMEX trucks...I have evnen shattered large bits drilling out that metal...I bet they would hurt in the eye...
I just posted a drill size chart --- including number, fractional and metric sizes --- in the Technical Q&A section (it's not exactly just an HO question).....
BillS
BillS