snap 1% of perimeter for slider free mold ? 1

[targetdesign]

Hi all!
I heard of this "rule" and I was looking at some kind of confirmation:
In a part that snaps into another, with a continious snap shape all around it (most remote control for car lock/unlock are like this)->
| |
| |
/ |
/ |
\ |
\__|

| |
|X|

the depth beeing shown as X in the above drawing,

if the depth of the snap is up to 1% of the perimeter of the part, the part can be molded without the need of sliders in the mold, as it would succesfully be pushed out of the mold by the sliders.
I have done a remote control using this tip, and it works out very well, but I dont remember what was the exact percentage of the perimeter part to but used.

Please HELP!!

thanks all
regards
Gerard

 

[deper]

Mr. Target.
I've seen alot of rules on snap fits but that's a new one to me. I think more important is the type of plastic and if it has somewhere to move to or compress without shearing upon ejejection.
-Doug