Calculating Surface Area of a drill
Calculating Surface Area of a drill
(OP)
I am performing some electro-chemical etch tests on drills and it would be beneficial for me to be ble to determine the actual surface area of a 1/4" Jobber drill. I suppose that I could look up the drill dimensions and apply lots of geometry. Does anyone know of an easier/faster way to figure out the surface area?
Thanks in advance.
Thanks in advance.





RE: Calculating Surface Area of a drill
RE: Calculating Surface Area of a drill
You'll probably also need to agitate to ensure that fresh electrolyte is available continuously, since that will also change the current density.
TTFN
RE: Calculating Surface Area of a drill
Anyway, if you have a drawing of the cross section then isn't the SA just the perimeter of the flutes *their length /cos(angle of twist)+ the obvious calculation for the lands?
Cheers
Greg Locock
RE: Calculating Surface Area of a drill
IRStuff is on the right track... Based on the power and current that is drawn from the drill I can get a rough idea of the surface area as compared to a stock cylinder and make comparisons.
I am trying to work this problem in the other direction. Based on the known surface area of the drill, I would like to understand the power and current draws of the tool. By comparing the amount that is etched from various drill sizes versus the surface area and power, I can determine if the current density is saturated at a given tool diameter, etc.
Thanks for your ideas.
RE: Calculating Surface Area of a drill
TTFN