Archived:Brüder Mannesmann M1225-125

Brüder Mannesmann M1225-125

MachineInfoBox Brüder Mannesmann M1225-125
Synonyms:	bench top grinder, grinding wheel; DE: Doppelschleifer, Schleifbock, Trockenschleifmaschine
Type:	Bench Grinders
Material:	metal (not aluminum)
Location:	Metal Workshop
Access Requirements:	Bench Grinder Introduction
Status:	Gone
Manual:	Völkner.de
Tutors:	Lukas Pakue Johannes Luzian Utis Sebastian
Similar (More or Less):	disc grinder, files, sandpaper

This bench grinder from 1996 is used but still in decent condition; the wheels run true and quietly. The grinder is equipped with two different stone wheels with different grits (35 & 60); one for heavy-duty and quick material removal, one for a finer and more precise material removal that will leave a way nicer surface finish.

Maintenance

The wheels need to be "dressed" from time to time in order to produce nice straight edges and maintain stability. Apparently, it's possible to do that with nothing more than a few spring washers on a piece of threaded rod!^[1] We should try this before spending time and money on a more sophisticated tool.

Changing Wheels

After installing a new grinding wheel, set up a safety perimeter (let's say everyone leaves the room) and let the grinder run for five minutes. Only if that went well, without suspicious noises or visible signs of problems, should the grinder be used again.

Upgrade Ideas

For really sharp knives, we could turn an MDF wheel on the wood lathe and use that as the final "grit".