Michael,
That staement was regarding the actual tiller of the limb because some fellas thought I was putting all of the bend at the grip/fades. I tiller the bows' weight and curve profile to be even in the whole limb, not progressive.
As to the method of tillering, I basically hack & slash till the bow will bend enough to string it with tension.....sometimes the string is nearly flat to the bow sometimes a couple of inches......then I put a 6-8 inch 1x2 between the string and center of the bow and start scraping to even the limb symetry.....when they are symetrical I just keep evenly scraping to increase the draw length and draw weight to suit the purpose. At a certain point the 6-8" stick wants to fall out so go to a 12-16 incher and start the process all over again. When that second 1x2 is getting loose I will remove it and short draw the bow to get a feel for its weight and wether or not it's pulling smoothly.
At this point I go to a 1x2 thats about 24" long and start over again. If your draw is a pretty basic 26 to 28 this will be your last stick....if you are making 30+ inch draw bows you will ahve to go one stick bigger.
After you install one of the sticks, I place the bow with one end against a solid object (mop board, wall, tree....whatever) and the other end I push into with my pants belt (about at the hip) Then simply scrape "X" amount of times....reverse the bow and do the same to the other limb ( usually 20 scrapes per limb is necessary to see noticable changes ). When your finished with both limbs hold the bow at arms length and "eye-ball" for symetry....if it's good then repeat step one, if not then scrape the offending area and then go back to doing both limbs.
By tillering under tension I feel that I get a truer picture of the tiller.....and the bow is not constantly being flexed, relaxed flexed etc. ( with tiller trees....your told to "excercise the bow after scraping before going on) well the stick and string does away with all that.....this way also tends to stop ya from pulling too far too soon and producing set or breakage....
Anyway , you asked so thats how and why I do it this way.....added bonus is that you can tiller anywhere, and do so properly.
Rich