Posted by Kevin in Ohio [50.102.49.16] on Tuesday, April 01, 2014 at 08:23:04 :
In Reply to: Block sanding corners posted by Desoto61 [138.162.0.44] on Monday, March 31, 2014 at 15:48:55 :
I've found a firmer backer is better to a sharp detail line. The real soft backers will not allow you to get in the very start of the edge and you'll burn through about a 1/4" out before getting it right.
The firmer durablock type or or these is what I used.
http://www.ebay.com/itm/3m-Marine-2-Roloc-Disc-Pad-Assembly-5539-/141211747012?pt=Motors_RV_Trailer_Camper_Parts_Accessories&hash=item20e0e042c4&vxp=mtr
I had some in the 3 inch size and belt sanded them to a wedge. They are nice as you can put a 1/4" bolt and sleeve to give yourself a nice handle, gives you good control over it. Marty nailed it as you don't want to run the same line. I start at the inside edge and work out. Half lap and continue. Then go the opposite direction , 90 degrees from the prior angle. A good light and clean with a sponge and dry off to see the shine.
I used this method on the cut and buff too on those areas. Louvers are the worst.
I used adhesive sandpaper on the roll and just cut it to size. They DO make 500 grit in that and autobodystore.com has it.