07-13-2016, 12:58 PM
Hello guys,
I'm back again...
that finish looked like an undressed wheel was used or even a wheel that has sat for a long time, Such a wheel can sometimes build up contaminants on one side if hung through the centre hole on pegs on the wall, it used to happen all the time where I did my apprenticeship, especially with thread grinding wheels as a particular pitch might not be used for a decade so would just hang on it's peg and of course thread grinding wheels are a real pain to dress so... you just don't if you can get away with it anyway while the wheel is on its peg dust of every kind sits on the top and apparently humidity carries water and contaminants into the wheel too and they settle on the low side. Of course thread grinding is a different process but the idea must be the same and when I bought my surface grinder which had a heap of wheels all hanging on pegs for decades I had the same trouble dressing helps but you might need to dress a long way in some of mine lost a quarter inch before the colour was consistent all the way around, but they came from a very dirty environment too,
Just my 0.02P
Oh BTW soon after I got my wheels true, clean and working I hung them up and didn't do much with them for nearly 15 years so... it's time to do it all again... Grrr
Best regards Rick
I'm back again...
that finish looked like an undressed wheel was used or even a wheel that has sat for a long time, Such a wheel can sometimes build up contaminants on one side if hung through the centre hole on pegs on the wall, it used to happen all the time where I did my apprenticeship, especially with thread grinding wheels as a particular pitch might not be used for a decade so would just hang on it's peg and of course thread grinding wheels are a real pain to dress so... you just don't if you can get away with it anyway while the wheel is on its peg dust of every kind sits on the top and apparently humidity carries water and contaminants into the wheel too and they settle on the low side. Of course thread grinding is a different process but the idea must be the same and when I bought my surface grinder which had a heap of wheels all hanging on pegs for decades I had the same trouble dressing helps but you might need to dress a long way in some of mine lost a quarter inch before the colour was consistent all the way around, but they came from a very dirty environment too,
Just my 0.02P
Oh BTW soon after I got my wheels true, clean and working I hung them up and didn't do much with them for nearly 15 years so... it's time to do it all again... Grrr
Best regards Rick
Whatever it is, do it today, Tomorrow may not be an option and regret outlasts fatigue.