Customer Reviews
Great addition to my shop 
2007-01-23
I bought this to do final sanding on segements for woodturning projects. As such it has to be flat, repeatable, and accurate. It's head and shoulders above the Grizzly I replaced. Pad changes only take a few minutes. I used to dread doing this and as such kept the pad on way to long.
The dust collection works great. It has a 4" outlet so I can hook it up to my 2HP collector and almost no dust comes into the air. The design of the backing to the disk for this actually does what they say.
The table is very heavy and when locked down stays there. I built my own custom sliding sled with different angles for different segments and the sander repeats very well. I've removed the table, put on new pads, then reinstalled the table using the stop with no problems having to fiddle with realignment.
The other handy feature is that you can sand right up to the middle of the disk, again unlike the Grizzly.
Two of my woodturning buddies have also bought this after seeing mine in action.
JDS-12B is a very nice tool 2006-08-16
The JDS-12B is well built, quiet and smooth. Be prepared to have some help unpacking this tool as it's very heavy and bulkey (104# shipping weight). $443 is way too much to pay for this sander and currently available for $349 plus $8 shipping.
Why the price increase? 2006-08-13
About a month ago this sander was $249 on this site. Then poof! $393. Now $443. What gives? I bought mine locally and paid only $285 last week. The sander is awesome, though. Seriously smooth and quiet. The built in fan works well to draw away dust, but you still need a collector to catch it. I couldn't be happier with it. I just don't know wht it's so expensive here.
Great Benchtop 2006-07-25
I have the grizzly combo sander, the delta disc sander and this JET Disc sander. It is the only Jet Tool I own and it ROCKS. All that cast iron is worth the money. For me the Delta dust collection works better then the jet, but the jet seems to have a much bigger sweet spot for sanding flat and the disc is flatter then my Delta. It cost more, but it worth it.!
The Highest Quality Disk Sander Out There! 2006-07-11
WOW - What a tool SHOULD be. The best disk sander I've ever used, and for several reasons. The motor is quiet and this tool is vibration free! The cast iron table in front is large and comes with two miter slots, unlike the Delta and Grizzly. I purchased the stand and filter locally only because Amazon was out of stock at the time. Don't tighten the hardware on the middle of the stand untill you first measure the hole distance on top for the sander. Pre-arrange them at that distance and then attach the sander. Dust collection is very nice too as the internal blower fan blows it into the filter without having to attach and use a shop-vac. I like this feature. I purchased this sander for $224.99 but two weeks later it increased $168.00 - DON'T KNOW WHY SO MUCH! All in all, I'd buy it again. You won't be dissapointed.
Disapointed 
2007-12-09
I have had mine for less than two years and used it for making pens. The bearings are shot. It makes a tremendous noise at start up. I have to firmly tap on the brake to get it to stop. I bought the jet because of there reputation. All my other tools are Jet and love them.
Bad Bearing After Less Than 6 Hours Use 2007-12-08
I have really enjoyed having this sander up until the last few days. It began making a very loud noise (so loud you must wear ear protection just to be in the same room). It appears to me that a bearing at the disc end of the drive is going out, and after less than six hours total use. I've had this machine just over two years, most of which its just been sitting in my heated/air conditioned shop. The noise abates only very occasionally when a work-piece is being pressed up against it. I checked my warranty and as you'd guess it's lapsed. I really don't get why Jet has different length warranties on these big tools of theirs, this was a year, some are 3 or 5 years. Anyway, this should not be happening on a little-used tool two years into its life. Otherwise, no complaints, losts of power, you could sand a six foot 2X4 to saw dust in less than five minutes with this beast. The disc itself is flat and true, no wobble at all. I purchased this sander through Amazon, but it was shipped from Jet. If I knew then what I know now I'd buy someone else's machine. This thing weighs over 100 pounds and it's all I can do to lift it, I don't look forward to getting and moving another (UPS won't be looking forward to it either). This item should be shipped only by a carrier prepared to handle really heavy machines, but Jet used UPS. And it's packed in a box that's little bigger than the unit itself, with much less than sufficient packing material for a heavy unit being shipped through UPS. If you don't mind noise (100+ dB's), and the likelihood that this sander will lock up when the bearing finally goes out, then go ahead and buy it. Hope this helps.
very happy purchase 2007-11-09
This was a very enjoyable purchase. Thank you WMH and Amazon. The package arrive in a very reasonable time frame, and the package was almost flawless! I took it out of the package, plugged it in, and zoom........!!!!! Lots of power, very nice work tray. This machine is QUIET, and dosent vibrate a bit, even when it isnt bolted down! Thanks Amazon, and WMH tool group!
EVERY THING i WAS HOPEING FOR 2007-03-27
I was considering the Harbor "Fright" model and Delta. I made the right choice. This machine performed accuratly and fast right out of the box- no adjustments or set-up involved. This will be passed down to generations
Quality is what you get when you pay for it in this case. 
2007-03-20
Just recently I had a Delta 12" Disc sander, that after 22 years died. It had worked perfectly until the motor just burned out. I was going to replace it with another Delta. But after reading the reviews, I knew I wouldn't be happy. I Guess Delta has taken a nose dive over the years as far as quality control. I ordered this because of what others were saying about it. I have to say I really will give it 4 !/2 stars, It wast perfect right out of the box. I set it up plugged it in set my dust collector near the ejector point.
There was virtually no dust, with my set up. Everything was lined up perfectly. When I have to replace another piece of shop equipment, I will think JET.
