Tuesday 8 March 2022

Casio watches, what are they made out of?

 Casio Mudmaster Resin Case



So what the heck is the "RESIN" stuff they talk about?



Casio patents show it is in fact PEEK, that is Polyether ether ketone, a structural Synthetic thermoplastic which in this case has been reinforced with carbon fibre in a non-woven way (latest Mudmasters) . PEEK is very strong and resists many chemicals except strong alkalis. 

It is as Casio says injection molded at high temperature and is a thermoplastic which can resist very high temperatures before deformation.


The new Casio Mudmasters can be built slightly smaller because of this composite formulation.


The older Cases from say models like the GWG 1000 etc are made from different grades of PUR, which is Poly Urethane Resin

See here:

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