I recently purchased a used Dumore tool post grinder and it came with no grinding wheels. The wheels need to be approximately 1-1/2” to 2” dia x 1/4” thick x 1/4” dia hole arbor. Dumore and McMaster-Carr sell them. However, can anyone suggest other sources for a better selection of size, material, and grits?
4thTool
"BayState Abrasives" back in the day? Part of these folks, long time, already:
Radiac Abrasives | BRAND CONSOLIDATION - Radiac Abrasives
Another industry leader of long-standing- - part of France's St Gobain:
Norton Abrasives North America Homepage | Norton Abrasives
That said, and special needs or alloys being whatever they are, Dumore being still a "going concern", they aren't exactly 'unaware' of what works well with their TP grinders 'in general'.
If you are just starting-out with any one of their grinders, you could do a lot worse than to clock some experience with their own stock offerings first?
MMC don't list stuff exactly by accident, either. If they offer wheels or mounted points, there WILL be a market. Consider that a "vote of confidence" from the industry, in general.
Adapt to your special needs on experience, research, advice as to SPECIFIC goals and alloys from the user community as you learn what to ask for best effect and improvement.
Until then? "too broad a question". By far.
CAVEAT: No personal experience with Dumore.
I'm a McGonegal (TheMac) and (Rockwell-era) "Precise" guy.
In my book, Dumore / Hamilton-Beach are best for mixing lovely chocolate-malted
milkshakes.