ShopBot PRSalpha - Use the X-Car as a Guide to Align the Rear X-Rail

ShopBot PRS Assembly Manual Page -26
Detail
• Put a C-Clamp across the rails at each end of the table to create a temporary end
stop to prevent the X-Car from rolling off the table while you are carrying out the
next tasks!
Use the X-Car as a Guide to Align the Rear X-Rail
Note that the weight and rigidity of the cars, their wide wheel base, and the self-
centering nature of the V-groove wheels will take care of slight errors in the rails,
but you want to get the rails as well aligned as you can.
• Roll the car down to the middle bolt of the X-Rail so that you start the process from
the center of the table and work out to the ends.
• Clamp the side of the X-Car on the straightened, front rail so that the wheel bearings
are centered and locked onto the rails.
• Move back to the rear rails. Loosen up all the bolts a tad. Then make whatever
adjustment is needed to get the rails perfectly under the rear bearings.
• Work on this progressively over the rear rails, moving out from the center. There
should be enough adjustment in the rail to allow you to get the rear rail perfectly
aligned over its full length.
This is the hardest step, so take a deep breath and congratulate yourself when
you’ve gotten it accomplished!!!
PRSAssembly080922.doc Copyright 2007,2008 ShopBot Tools, Inc