EZ Fletch

[JJD]

A friend loaned me his Arizona EZ Fletch tool as he had to have a shoulder repaired and was not going to be using it for 2 or 3 years.  Used the setup per his instruction and what I got off a couple of U-tube videos.
I had good success with it so got my own, now Easton EZ Fletch.
Question;
New unit came with instructions, I actually read them 
They talk about 75/105 degree fletch and 120/60 degree Fletch, what is this and what is it's significance?
With the 75/105 they talk about turning the arrow shaft "3 clicks" then turning it "5 clicks", can anyone make this clearer?
The instructions on this point are very vague. 

Another thing I find of interest is that they call for the unit to be used on arrow shafts smaller than "20/64th.  Is there some reason they don't call it 5/16?

[theleo]

Are you trying to 4 fletch with it?

[JBar]

75/105 is 4 fletch puts the vanes in an X as compared to 90 puts the vanes in a + . Hope that helps

[Old Dog]

[quote author=JJD link=topic=207693.msg2763611#msg2763611 date=1484674011 
Another thing I find of interest is that they call for the unit to be used on arrow shafts smaller than "20/64th.  Is there some reason they don't call it 5/16?
[/quote]

Back in the days of aluminium shafts they were made in 17,19,21,23, and 25/64.  You can't reduce those fractions, so everything was measured in 64th of an inch.   

[JJD]

Thanks guys
3 vane only. VaneTec 2" HP so will not give that other stuff another thought.

On the 20/64th issue. I knew there had to be some sort of explanation. 

Again thanks for the responses.