Good Investment:
Knoll blade balancer or possibly Robart high point balancer with a blade adapter........Check PM Rick

Roughly 1 mm apart or less and 0.5gm weight difference is in rough specs.. I used to use a gram scale for chk. weight.

----------------------------CG (6off)-------------------------------- #1

-------------------------------CG-------------------------------------#2
Do this by applying automotive trim tape or decal at the EDGE of blade 1 to push the CG more to the outer
-------------------------CG-------------------------------#1 Tape to correct
Automotive tape is ok..


#1 is off 6mm
I take it these are woodies.........
You need to add weight to correct the issue-Most use decals or tape to correct...6 is a bit off............... You can add tape but do not get excessive with the auto trim tape ..


Or possibly better yet look at glass & CF blades pre-balanced, most are factory balanced from the get go just check and bolt on...
With Balancer:
Locate the CG of the blade than place a mark on it, then install the blades on balancer and apply your tape on your markfor the CG of the lightest blade.


NEVER drill a blade ever nor modify, you will weaken them!