Decimal to Drill Size Conversion - now with RPM calculation

Carla, Thank you for your effort, but I just cannot understand the requirement, as every drill index box I have seen has the decimal size stamped into the box for every drill. In addition, there are a multitude of available wall charts that display conversions and tap sizes. Furthermore the "Machinery Handbook" which every machinist should own, has all the info you could ever want. Steve

decimal to fraction converter yet again to make the

size drill bits corresponding to a decimal value

also displays target RPM for a particular drill

value depending on the material being cut or drilled.

occasionally it seems best to keep it on my site.

politics peripherally, as normal people do until

major parties not as the Dems versus the Reps, or the

spending and taxing and the expansion of

did another, who went along on the spending spree

Cool!

You can overwrite the RPM and get a SFM number, as well.

--Winston

Only big problem I can find with it..is that it only goes up to .975ish in drill size.

Would be better up to about 3"

Gunner

Whenever a Liberal utters the term "Common Sense approach"....grab your wallet, your ass, and your guns because the sombitch is about to do something damned nasty to all three of them.

every drill index box I have seen has the decimal size

available wall charts that display conversions and tap

has all the info you could ever want.

I keep an old laptop out in the shop with various utilities such as this on it. Ill be using this one, particularly on the milling machine, and see how it goes.

Only problem I can see..is its only good for drills under .975ish as I remember.

Works good. Good RPM and SFM outputs

Gunner

Whenever a Liberal utters the term "Common Sense approach"....grab your wallet, your ass, and your guns because the sombitch is about to do something damned nasty to all three of them.

Steve, I can't argue with that, and I have that same set of resources available.

What this program does is let you measure a part with your caliper or micrometer, enter that value and immediately get the nearest larger and smaller fractional, metric and letter/number drill information. You also get the clearance or interference value for each drill size indicated.

It's actually faster than looking at the wall chart, and errors of interpolation between printed values on the chart are a thing of the past. It's definitely faster than thumbing through the Machinery Handbook to find the appropriate chart, then reading the mouse type.

It's just a handy utility, not the next 'killer application' :)

Carla

"In explaining any puzzling government phenomenon, always choose stupidity over conspiracy, incompetence over cunning. Anything else gives them too much credit." Charles Krauthammer

Slide the decimal point around as needed.

AH! Thanks!

Gunner

Whenever a Liberal utters the term "Common Sense approach"....grab your wallet, your ass, and your guns because the sombitch is about to do something damned nasty to all three of them.