Had a looooooooong day today at home depot and after sorting and cutting 11 bags of bamboo today here is what intact to say.
1 garden shears work ok to get the shafts cut down if u r careful
2 bamboo can just plain crush and splinter under pressure
     I ended up with sixty some odd shafts, seven of which may be too small in diameter...'too tired/lazy to upload pix,'will do it later. 
I feelmasmcontentnasmcan be after creating so many blank uniform shafts 

 gotta luv the feeling of the beginning of a great project