3Leg, 4Leg, Round,Ellipse

Over travel, Over Load, Damage of Transition Ring, Over sized actuator, Dome Legs are not evenly supported, INT, Bouncing

Metal Dome User Guideline.pdf

Test tooling is hard pointed.

Rb60 SILICON ROUND HEAD

all metal dome should be pre-conditioned at least 8 times with suitable force & testing perform to release the residual internal stress before taking any measurement.

According to the report of material supplier, tolerance is +/-0.004mm

Hardness of material Hv380~Hv420.

spring back effect and residual internal stress, trip/release force will rise gradually with time, this is why the trip/release force will different to the QC report after a period of time. True Tone always does not recommend to store the dome for too long, and please note that we do not guarantee the quality anymore when the shelf life ended (normally 1 year)