I drilled and tapped blocks to fit my headstock threads. Then drilled and tapped from the end for 1/2" bolts to hold the buffing wheels in place. This cost me a few dollars in wood, bolts and washers for about 15 sets. All of my buffing wheels come from Caswell Plating. I used the advice of Tex at Durango for purchasing teh wheels and compounds.
I eventually made one of these for each buffing wheel that I have. They fit nice in 1 gallon zip bags. I keep the wheel and it's buffing compound in one bag. My wife also does jewelry and uses one of the lathe for buffing, so I have about 15 different wheels and compound combinations. These wheel mandrels fit 1-8 threads,
The 3rd pic works the same way, but I used a piece of all thread to make the bolt part, This was made for the fun of it. But it works great for my specialty buffing wheels.
I high recommend that you label your wheels to the compound that you use on that one. These pics were taken before I screwed up and used them out of sequence. You Never want to mix compounds on one wheel, and you DO NOT WANT to polish anything wood with a wheel that is used for metal items.