Review on SPTA Polisher Variable Orbital Polishing by Greg Mahoney

Good starter kit. The DA polisher came with 5" and 6" pads and a carrying case so you had everything you need to get started. The polisher starts and runs perfectly. You can easily control the speed with the speed wheel and there isn't too much vibration. The motor windings are filled with epoxy and the gears are lubricated with a large amount of grease. Note the machining marks on the motor housing. Although the engine runs quickly and smoothly. Finally, the head is pressed in, making it difficult to change the lubricant.