Saphir vs. Rubin for shaping wood

[ear3]

I'm getting close to pulling the trigger on the RAS 115 for a wood shaping project I want to do, and I was wondering what the best abrasive choice would be for making contours in bare, unfinished wood, Saphir or Rubin?  I haven't yet selected the wood for the project, but it will probably either be Cherry or Walnut.

And in terms of grits, If I start out at, say 36, would it be okay if after the initial shaping I then started sanding with the ROTEX at 60, or could I move immediately to 80?

BTW, before posting I did an initial Google search on Saphir vs. Rubin, and I came up with some pretty funny results.  I didn't realize the person charged with coming with names for Festool abrasives was a Pokemon fan.

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#sourceid=chrome-psyapi2&ie=UTF-8&q=saphir%20vs.%20rubin

 

[AlexThePalex]

You really want to use Saphir for shaping. It is a hundred times as tough as Rubin. Rubin dulls the moment you put it on, while Saphir just keeps going and going. The backing pad of Saphir is a lot stronger also, made out of cloth instead of paper, adding to its durability and ability to do rough work.

As for later on, I never found there to be much difference between grit 60 and 80, so I think you can choose which one suits you best.

About the names Rubin (Ruby) and Saphir (Sapphire), they're both common gem stones so they get used for names in series all the time. 

 

[ear3]

Thanks for the clarification -- on the abrasives and the names.

 

[waho6o9]

The RAS is an excellent choice for a shaping project and it will be interesting to see what you make.
A Shinto rasp and maybe an Auriou (spelling) rasp will help with the finer details of your project.
Good to know the differences between the Saphir and Rubin abrasives. Thank you.