This is a little more explanation for those who have never used a DA. A DA has a round pad that holds your sanding paper or buffing pad for polishing that spins in a circle for sanding or polishing. Along with the spinning in a circle, the shaft that carries the round pad is being moved side ways eccentrically, kinda like a left right and or up and down sanding motion along with the circular sanding motion of the round disk, there by the two way. An easy way to think of it is like using a hand held metal grinder which of course has a grinding disk that spins in a circle. When grinding a large flat surface typically one will move the grinder left and right and up and down to keep from grinding down into the metal surface. With a DA the left and right are automatic, but you do still have to move it from place to place to keep from buffing all of your paint off in one spot or grinding through your fiberglass in one spot. I have a Boshe sander that will just spin in a circle or can be switched to the dual motion at the same time. This tool has a switch to change from one to both operations. I have used mine mostly to buff my boat with wax. You do get extra vibration in your hands with the eccentric movement of the shaft that carries the spinning disk. Hope I didn't confuse anyone, but it is almost 2 am here. Guess maybe it is time to grind to a halt! Larry Howell
________________________________ DA is short for "dual action" sander. It is body shop lingo to describe the air powered sander that has been around a long time. Kevin Golden Harrisonville, MO In a message dated 12/6/2009 8:42:50 P.M. Central Standard Time, le62...@yahoo.com writes: A DA sander is an air sander. It is usually with a six inch pad for six inch wet or dry sandpaper. When you sand the clear coat you want to use it wet. This keeps the paper from clogging. I use the DA sander on flat surfaces only when sanding clearcoats. It is easy to sand through the clear coat on sharp edges so I do the sharp edges and turns by hand with a foam sanding block. A DA sander is a round sander which is adjustable to different speeds. It makes sanding and finishing a much easier job. --- On Sun, 12/6/09, j...@aol.com <j...@aol.com> wrote: From: j...@aol.com <j...@aol.com> Subject: Re: KR> Paint :Imron To: kr...@mylist.net List-Post: krnet@list.krnet.org Date: Sunday, December 6, 2009, 4:43 PM In a message dated 12/4/2009 5:23:45 P.M. Central Standard Time, le62...@yahoo.com writes: We do some antiques and street cars and we will put as high as four or five coats of clear and DA sand them with 1500 grit, 2000 grit and then 3000 grit and buff several times to get the desired finish. Ultra fine sanding takes out all the orange peel and any contamiants that settle in the clear top coat. What does "DA sand" mean, and do people use powered orbital sanders for finishing without worrying about glass separation from the foam or wood? Jay W. Hughes N128JH American by Birth - A Texan by the Grace of God In God we trust! _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
