I ordered the DW660 from Amazon and designed some brackets in CamBam, then milled them using my Dremel spindle. I’ve mounted the new spindle and have tried it with HDPE (cutting board). Works exceptionally well – no slowdown at normal speeds – speeds that would slow down the Dremel at least by half its RPM.
Check out my posting on the Shapeoko which includes gcode files for the brackets: http://www.shapeoko.com/forum/viewtopic.php?f=8&t=1346
I’m currently working getting a proper clamp-down system on the bed. Additionally, I’m working on a light sensor-based limit switch using milled holders. Hope to get that build report up on the web site soon.