Got to play w/rotary

Don

Darth Camaro 12/27/15
I got my first chance to play with the rotary last night. I was able to get a hood from the body shop to play with, itâ€â„¢s a dark brown metallic from some small car.



I started off with #2 Fine Cut on a cutting pad on one side. The first thing I discovered was that setting âہ“1â€Â� is too slow. The pad wants to jump around and the buffer didnâ€â„¢t glide smoothly over the surface. Setting the speed to around 2 or 3 made things a lot better. I prepped the pad, then applied a small bead to the hood. Maybe itâ€â„¢s the LC variable contact pads, but I didnâ€â„¢t have much problem with splatter.



I tried buffing with the pad completely flat, but since the hood was being supported by saw horses, it wasnâ€â„¢t nearly as stable as it would have been attached to the car. The torque of the buffer kept wanting to pull/push the hood off onto the floor. I buffed the side of the hood with #2/cutting pad twice. When I wiped off the excess, I noticed some hazing of the paint. Switching to a finishing pad eliminated the haze. Inside the garage, the finish looked really good, most of the minor imperfections were gone, just the deeper ones (from being tossed around the scrap pile), the RIDS random isolated deeper scratches remained.



Then I used DACP on a polishing pad on the other side of the hood, still keeping the speed between 2 & 3. I did this step twice then wiped off the hood before taking it out into the sunlight. I was shocked to discover that there wasnâ€â„¢t nearly the visual difference that I thought there should have been. The buffed sides looked a bit clearer and were definitely smoother, but the swirling seemed almost identical to the center un-buffed section???



Maybe Iâ€â„¢m not going nearly as aggressive as I thought I was. I thought the DACP would have had a greater effect, but it didnâ€â„¢t seem to do much more cutting of the surface than the #2 did. Looks like Iâ€â„¢m going to have to find a sturdier way to support the hood while I practice and possibly find the point of causing damage and work backwards.
 
being successful with a rotary buffer involves more than just using a rotary and some dacp. There is technique involved. Also, has the hood been repainted? how old is the paint? what did you use after the dacp to clear the hazing? etc.



Vernon
 
White95Max said:
Which rotary do you have? Were you applying any pressure to the surface?



vdog0531 said:
being successful with a rotary buffer involves more than just using a rotary and some dacp. There is technique involved. Also, has the hood been repainted? how old is the paint? what did you use after the dacp to clear the hazing? etc.



Vernon



I bought the Chicago Electric from Harbor Freight. I figure if I didn't like it or couldn't get the hang of it, I was only out $25. I tried to keep pressure to a minimum, partially to try and get a feel for it and also the saw horses weren't very stable & the hood kept wanting to fall off.



Vernon, this is my first attempt at rotary use in several years. The last time I was using a single speed rotary with wool pads & a harsh abrasive, so needless to say I'm a bit gunshy.



The hood has not been repanted and it's roughly 5 years old. I used #2 with a finishing pad to remove the hazing.
 
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