Limitations
  There are size and resolution limitations for the Mirror, Deflection and both 
  Extrusion Wraps: The maximum size in both directions covered by the actions is 
  a bit less than 6 meters = 20 feet. The stretcher bar thickness can be 2 inches 
  maximum, there is a  3mm = 1/8 inch tolerance per side added automatically.
  At the stretcher frame size settings, an action stop, the resulting resolution has to 
  be above 20 PPI. You can always upsample in that first choice of the action to 
  get above 20 PPI so it is not really a limitation. However it is not recommended 
  to upsample when the 20 PPI or more is already available. The action will take 
  more time than necessary if you select a high PPI number there right away. 
  Canvas print quality usually requires less than 300 PPI input to the driver and 
  optimal quality will already be available at 150-200 PPI input, the quality of the 
  wrap isn't getting better with higher numbers and overall time in processing and 
  printing increases. So keeping the resolution at 200 PPI or lower may be wiser 
  but given enough computing power and scratch disc capacity it could be used 
  with higher PPI numbers. Large frames and high PPI numbers will take a lot of 
  time to process depending on the system the software runs on.
  Some comments
  Please, always check the edges on the monitor at 100% to see whether it is done 
  correctly. By making the actions universal for sizes up to almost 6 meter and for 
  high and low resolutions there can be artefacts that are only visible in the print 
  or with higher magnifications on the monitor. As a result of copying the image 
  edges there is the more pronounced double image edge with all the flaws you 
  wouldn't see on the normal image. Light fall-off on the edges, the scan that 
  should have been cropped a bit more, it all becomes more pronounced when the 
  edge is doubled with mirroring etc. Some samples on the pages will show that 
  the top edge of the image and the copied wrap at that side is too light at the 
  frames edge etc. It isn't retouched here to show what can happen.
  With the Plain Wrap there's a chance that you will select a frame side color that 
  is beyond the gamut of the image itself, in the conversion to the printer profile 
  this darker or more saturated color influences the image color depending on the 
  rendering chosen. To avoid that issue you could select a color in the image itself 
  with the Eyedropper tool or do the conversion to the printer profile (P2P) on the 
  image before the actions and then print with color management off.
  Copyright to all actions, action methods, texts, on this site and to certain 
  photographs used to illustrate them are held by the developer Ernst Dinkla. The 
  site itself and some photographs are copyright 2006 by Ernst Dinkla, Dinkla 
  Grafische Techniek, The Netherlands. All right reserved. The actions have been 
  tested on all Photoshop versions up to CS 5.5 and their respective platform 
  versions. No issues were reported. The actions were not tested on other 
  applications that may load Photoshop actions. 
  Photoshop is a registered trademark of Adobe.