In article , Brigitte J.
wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

Hold the blade, then turn the bolt. If you can't hold the blade with a
gloved hand, block it from turning with a scrap piece of wood.

djb

--
"I'll do the stupid thing first and then you shy people follow..." - Frank Zappa