Steam

[Forest2Furniture]

I know you're never to old to learn but how many of you have heard of steam being given off when cutting wet wood.

 

My mate was demonstrating how to log up the other day and the lass he was showing asked what was causing the smoke, his reply was that it wasn't smoke but steam which was being produced because the bar/chain were getting hot with the friction.

 

He was using a ms066 and cutting 12" sections.

 

Now, before I tell him he was talking cobblers I thought I'd check with you guys.

[tommer9]

Had it loads and loads of times, chainsaws, sawmilling etc etc, especially on bigger bars and on the bandsaw

[twistedhicap]

technically its water vapour as steam is clear !

[Forest2Furniture]

Yes,

but is the heat from the bar due to the chain not being sharp

[twistedhicap]

no at 10 12 0000 rpm a chain will get hot all things get hot and if the outside temperature is right you will see the water vapour ! i have seen it many times if the saw is blunt it will increase the heat but the heat is there !

[difflock]

Being married to a phyiscist (:blushing:speling) it is indeed water vapour, not steam, which is both bloody hot and invisible to the naked eye.

Think of a road after rain in the summer, it appears to be "steaming" or indeed ones breath on a cold morning.

Or a compost heap?

In the case of log cutting perhaps during the first frosty morning the damp interior of the log is sufficiently warmer than the air so as to cause the same phenomna, without the bar or chain being hot?

cheers

m

[Forest2Furniture]

Fair enough, I stand corrected.

Thanks,