Originally Posted by
Andrew J. Coholic
Having used a 37"x60 dual head machine with no platen between the large rubber coated rollers (Sicar) for about 20 years, and recently (the past nearly 7) a dual drum/platen in between (Cantek) I see a huge difference.
I normally run 120 to 150 on the machine, with a 60 or 80 if I need to level some large table top etc. Mainly 120 and then on to hand sanding with ROS.
With the platen, set just about level with the rollers (maybe a few thou down) there is no noticable ripple. With just the drums, there was always a bit of ripple. Im sold on the platen. It was an option on the Sicar but my father needed the machine ASAP a the time and took it off the showroom floor without.