Thread: Greaseless buffing wheel too big?

In general, if going to spend the money on the compounds, makes sense spend few more bucks on the wheels and a buffer. Harbor Freight has cheap motors if on the fence. Few pro/con I was considering:

Bigger wheel is safer = larger surface makes less likely blade to aggressivley catch. Flatter circumference of larger radius less likely for blade to catch danger zone of the wheel. Would want to secure the dremmel so can two hand the blade-not one hand on blade, one on dremel.

Smaller surface area of smaller wheel will hold less media. Would need to preload many more smaller wheels to allow dry time between loading. If running two 4" wheels per grit, need eight 1" wheels to have same surface area per grit. Smaller wheel also will generate more heat. Small diameter will be messy loading, takes a few moments of spinning the compound for it to come to temp, then the small diameter will load fast spitting out overage.

Speed at contact area of outside circumfernce looks like should be more than 25% slower on a dremmel if spinning 10k rpm a 1" diameter wheel vs 3450 rpm 4" diameter wheel. Although, ideally you would get a 1750 rpm buffer, but that will be more than the cheapy at Harbor Freight

at least my math shows:
1 inch dremel at 10000 rpm 6 mph at contact surface
or 31400 feet per minute = 3.14" circumference x 10,000 rpm

4 inch wheel at 3450 rpm 8 mph at contact surface
or 43332 feet per minute =12.56" circumference x 3450 rpm

4 inch wheel at 1750k rpm 4 mph at contact surface
or 21980 feet per minute =12.56" circumference x 1750 rpm