Folks -
I've had the Delta Drum Sander for about 3 years now, and have been very happy with it, within the limitations of how the machine should be used... I use it for sanding figured woods and thin work, relying on my planer for rough dimensioning.
I have found that only a very small amount of stock can be taken off at a time, which is okay. But I needed some *very* thin stock yesterday, for some banding and.... wow! I had a whole mess of strips of maple and walnut to sand down and I was able to consistently get them down to 1/64th, perhaps a little less, and the thicknessing was consistent across the width of the drum. I was surprised that I was able to take them down that far, have the thickness be accurate (within a few thousandths) across the drum and be able to REPEAT the process so that all of the stock was of a consistent thickness. I didn't loose ONE piece of stock and had no problems at all with tear out, snipe or the strips being "sucked" into the drum and ruined.
I haven't had to do a lick of maintenence to the machine since I got it, other than to blow the motor out and keep it clean.
I've been happy with the sander since I got it. Yesterday's experience only confirms my opinion.
YMMV,
John Moorhead