How hard do you press your tormach thru mild steel?

[HMB3000]

Originally Posted by Coolster You need coolant.

Originally Posted by Scott_M I respectfully disagree. For a couple of reasons.

I respectfully disagree also. For a couple of reasons.

First... by taking a shallow depth of cut with a quick feed rate your not building heat in any single area of materail to work harden.

Second...by taking a shallow depth of cut with a quick feed rate your not building heat from a heavey chip load.

Third...If you have air your adding coolant (air) to both part and tool also re-moving cut chips from cutter path. (air is not needed but will help). If you have air you could rig up a spray mist or drip.

Also you could just burshing some coolant/water on part works or a you could use a spray bottle...so flood coolant is not always needed and sometime is not worth it for the mess...

[philbur]

Doesn't the coolant also provide lubrication thus reducing tool wear.

Just a thought
Phil

Originally Posted by HMB3000 I respectfully disagree also. For a couple of reasons. First... by taking a shallow depth of cut with a quick feed rate your not building heat in any single area of materail to work harden. Second...by taking a shallow depth of cut with a quick feed rate your not building heat from a heavey chip load. Third...If you have air your adding coolant (air) to both part and tool also re-moving cut chips from cutter path. (air is not needed but will help). If you have air you could rig up a spray mist or drip. Also you could just burshing some coolant/water on part works or a you could use a spray bottle...so flood coolant is not always needed and sometime is not worth it for the mess...

[HMB3000]

Phill your complete correct in an ideal set-up coolant would be used....But there is no coolant pump in this case...with some of the coating you can run dry unlike an uncoated tool