Great 'concept'... but I'm on my 4th drum in about as many sandings... works well but one bad catch and the sandpapers pulls off center and tears... or worse, the rubber tears. Haven't figured out what to do... but way too much $$ into it I am sadly quitting. REALLY wish it was durable enough to be really useful. Do not recommend this system.

I struggled to adequately inflate the bulb with the supplied hand air pump. When underinflated, the sandpaper sleeves don't stay in place. Ultimately I took the rubber seal out of the hand pump and used an air gun with a tapered nozzle on my compressor with a pressure reducer at 20-25 lbs pressure. That works great, with reliable and quick inflation of the bulb. When properly inflated the sander works very well to sand bowls - much better than any other system I've tried. It would be better if the cost of the sanding sleeves was a bit less.