The ones at the craft stores looked so-so and the nice ones are $$. I'm the thrifty type though fortunately have tools accessible when needed to have a go at projects like this. Went to a local plastics supply hoping to find remnant cuts of appropriate sized acrylic but nada. Only had full lengths of the 1.5" square bar and at $180 was a bit much for my experimenting. The 1" square was $51 but I wanted something larger than the common 1" sizes. There was a cut of 1.5" rod so I thought this was decent enough to practice on. The sales guy gave a nice price because it was an odd size so I was pleased.
Used the backsaw to cut the first few and for a wimp, this was more arm exercise than I'm capable. Next was the saber saw that managed with a soapy water as a cutting lubricant. Still slow and I wasn't able to hold it accurately to get a good uniform sized cut. Put them on the chop-miter saw with the 40 tooth blade...that worked so long as I pecked at the cut and not in one motion. The kerf is about 3/16" which is wasteful, I didn't ask if he had a finer blade but I didn't want to ruin anything.
After the cutting put the rounds to a variable speed belt grinder using a silica carbide 80G belt and ground them wet to eliminate dust and heat issues. Used the disc sander but didn't like the results as much. Up to a 500G then onto the low speed buffer using a stitched wheel with white compound and a light touch. Pleased so far, will have to go back and do a few more with some technique refinements that came to mind.
After doing these few I can understand why the nice ones are $$.