In article ,
John Stumbles ] wrote:
To add to the other suggestions, you can get a ceramic cutting blade
for a jigsaw, but you need one which can run at a slow speed.


First time I used one of these blades it was in a rubbish old
single-speed jigsaw and (to my surprise) worked OK

It will work, but will wear out fast. Not good at the price. If you can
use water as a lubricant *safely* then this should help.

--
*Why do we say something is out of whack? What is a whack? *

Dave Plowman London SW 12
RIP Acorn