Neat Calculator, Really Neat Web Site

[dusty]

http://www.owwm.com/math/cpm.aspx

[a1gutterman]

Thanks for sharing, Dusty! I PM'd the web site to jbillups as I think it will be to his liking.:)

[charlese]

This is, as you said (paraphrased), a very interesting calculator. After looking at it for a while, I couldn't help but wonder - What possible use is the knowledge of the number of cuts per minute of a jointer or a planer? The unit 'minutes' is out of left field.

Only if we measure the speed of the wood in feet (or other linear measure) per minute can we use this info to calculate the number of cuts per lineal unit. The number of cuts per lineal unit is useful. If you can count them in the wood - there's not enough of them. If you can't count them, - it's just right for a finished piece.

[a1gutterman]

Hi Chuck,

Did you get a look at the rest of the site?

[charlese]

Yeah, I did scan through the site. Their mission statement is: "Oldwwmachines.com was founded as a public service to amateur and professional woodworkers who enjoy using and/or restoring vintage machinery."

This is undoubtedly a very valuable service to machine restorers like J.B. - Or to anyone, just wanting to look at photos of antique woodowrking machines, but I still see little value in figuring out the number of cuts per minute made by jointers or planers. This figure would only be valuable if the feeding speed is a) known, and b) controllable to a steady known feed rate.