Ten + Reasons for Dressing/Planing Blanks for Fingerjointing:

  1. The FJ line can be accurately set for width and thickness, eliminating blockages and re-set downtime.
  1. Already sized blanks means QC can focus on defects
  2. Better efficiency and improved safety in the clamping stations of the FJ
  3. Less friction between boards means efficient jogging and squaring
  4. Cleaner straighter surfaces improve handling and reduce wear on conveyor belts
  5. Cupped twisted and bowed blanks can cause rocking while passing the finger shaping too and can result in expensive blade breakages
  6. Better surfaces will result in accurate fingers resulting in improved alignment further down the FJ press. This means straighter boards with minimized planer straightening and stock removal downstream.
  7. Bad fingers on skew blanks means poor glue application and glue-linefailure
  8. The press has fences vertical and horizontal, to control the progress of the jointed ribbon through the machine. Variations I   n blank width and thickness causes blockages which take time to free.
  9. Example: you have a joined board 13m long but one blank is 10% under width. To get a clear board you need to convert 10% of the entire board to sawdust.
  10. Less planing after jointing, less stock removal, faster throughput, higher recovery.

 

I can go on and on. Please size your blanks.