I used them at them same speed as the 6" or maybe a touch slower in the tighter areas. Mine are the 4" SpotBufs on a PC. I start quite slow to spread the product and work up to the desired speed. Remember, if you are working in tighter spaces, to tape the trim off. I usually tape the trim off for any abrasive polishing, as it keeps any dust out of the trim edges and minimizes clean-up. I use3-M painter's tape, but there is specific automotive tape for this purpose. I have always avoided have the tape exposed to direct sunlight to minimize adhesive transfer to the trim surfaces. I have no idea if this works, it just struck me as common sense. I have only a single car garage that does not allow indoor work and have to make adaptations for being outdoors, like using sunsafe PB's products.
