here's how i did mine, shims come out to be uniform in shape and consistent.
for the compass i used the divider point and sharpened it (so it has 2 pointy parts) or you could use a circle cutter
compass, caliper, any yokomo plastic bag, and double sided tape.
lay double sided tape down
lay yok plastic on tape (i sharpied it so you can see the cuts easier)
first to be cut is the outer diameter (depending on what piston your using it may vary, and how much you want to slow your rebound) the more you cover up the hole, the slower the rebound will be. i used hamtser82's measurement 8mm outer dia. half of 8 is 4.
(im using tamiya 3 hole pistons)
once you get the measurement you need to transfer it to your compass, so i used the sharpest points of the caliper and marked the plastic
then set the compass to the marks
cut out the shims (make sure you don't all the way through the tape just the plastic)
next take the inner diameter measurement (most shock shafts are 3mm) half of 3mm is 1.5but thats really snug so i used 1.54mm
again transfer the measurement to the plastic
set the compass
cut inner diameter out
use and xacto blade to remove the shims from the tape
place the shim before the piston, and build your shock like you normally do. i'm using AE 45wt.
again thanks goes to hamster82
