96EbonyBird wrote:badsix wrote:Here's my Makita 9227C its variable speed and has plenty of power [...]
According to the specs, the Makita is more powerful than mine (based on rated current draw of 10 Amps vs. 4.5 Amps) but I don't know if a more powerful motor would make any difference for me since I'm not applying enough pressure to cause mine to slow down... or should I be doing that?
The specs say mine is actually capable of a faster speed than the Makita, which I think should mean it can remove material quicker... but I don't know... maybe the Makita would strip better because it's not a DA (I think).
The difference is that the Makita is rotary, so it spins around like a wheel does on an axle. Yours is a DA, so (depending on model), while the base will spin, it isn't driven to do so and the whole base moves in orbits of 3mm or 6mm or bigger, kind of like your hand when you're polishing. Movement for a rotary is given in rpm (revolutions per minute) while a DA is opm (orbits per minute). A rotary speed of 2000rpm is roughly equal to a DA speed of 6000opm. The rotary however, is much more aggressive and can achieve much faster results. It can also do damage more quickly.
I still wonder if there is anything unusual about my paint that would explain why sanding doesn't seem to do much... that primer seems very hard <grin>... Even with 40 grit I can move the sander slowly over a small area (8" x 8") for 30 seconds and barely see any change... is that normal?
Thanks,
The top layers are usually quite hard and take a bit more work/time to break through. Once through, though, coarse grit on a DA will work quite quickly.
For stripping larger areas I like the paint stripping disks (like the black one in badsix's photo). Extreme care though because it's for use on a rotary and too much pressure can dent the metal or going too slow with too high rpm can heat and warp it.