Replies

1. 
   TomMGTC | Mar 02, 2004 02:57pm | #1

   Try here. http://www.klingspor.com/

   Tom

   Douglasville, GA

2. 
   Julmer | Mar 02, 2004 11:30pm | #2

   I have been using a Performax drum sander for several years and had to develop a procedure different from the standard grit changes that ones uses when sanding by hand or with an ROS.

   I found I could skip several of the grit "steps" that hand/ROS sanding typically takes because the thickness sander could easliy "chew" out more material than the scratch depth left by the usual coarser step. (120 to 150 or 180).  And it did not burn the wood. 

   But I could not easliy remove 220 grit drum sanding scratches witn 220 grit hand/ROD sanding. So now for my fine finish work I use my drum sander for a final sanding with 220 grit and then sand out those marks with 180 using my ROS.

   I've also developed a habit of running stock thru at a slight right/left angle to help determine if I've sanded enough . When I change to the next finer grit I flip the angle left/right.  After the first pass at the higher grit, a quick glance down the board will show if I have removed  all the previous grits scratches (they appear as lines running in a different direction).  I think it works better than making pencil marks on the board and making sure I have sanded them off.

   Might not be techincally correct, but it works for me.

1. 
   OneofmanyBobs | Mar 02, 2004 11:52pm | #3

   I've been doing something like that.  The annoying thing is that I seem to get scratches 2 or 5 times deeper than I expect for a given grit.  Taking off 10 or 20 thousandths with 180 does not get rid of all the 100 grit scratches.  Always a couple really deep ones somewhere.  Don't know if a different paper will do better.  Seem to get about the same result regardless of wood.  Pine, cherry, maple.  I know a shop with a big belt thickness sander.  They don't have this problem.

1. 
   patternmaker | Mar 11, 2004 04:27pm | #4

   Bob: it is likely that the industrial sander that your friend has uses a platen to contact the work. It may also have an oscillating belt.

   I also use the Performax,but only to level up glueups. I seldom use a grit finer than 100 grit. The finish sanding is with a belt and or the ROS.

   Work safely¬¬¬¬¬¬¬¬¬¬¬¬PAT¬¬¬¬¬¬¬¬¬¬¬¬

1. 
   OneofmanyBobs | Mar 11, 2004 08:11pm | #6

   Now that you mention it, my friend's shop does have an oscillating belt sander.  They can put a 36 grit belt on it and get a better finish than I get with 100.  Maybe I'm expecting too much from the Delta, but I'd think it should sand to 100 without making too much of a mess out of things.  I'd expect scratches to be .005 or in that range, not where I have to take off .020 by hand to get a nice surface.

3. 
   GHR | Mar 11, 2004 05:11pm | #5

   I find the Delta paper work well, but I just machine sand with 80 grit. I follow that with 80, 100, 180 by hand.