Originally Posted by John Metric
...I will have a new chart with a little more data using the Helwig brushes. I am putting up to 199V on each warp9 now....
Which reminds me... it would appear that in exchange for much higher zorch-resistance, the new Helwig brushes seem to wear down at an alarmingly fast rate* - have you noticed a lot more carbon dust around the brush assemblies since switching over to the Helwigs?
* - which I have dutifully filed under the category, "TANSTAAFL"