How to determine the strength of a plastic staking joint

How to determine the strength of a plastic staking joint

Design engineers commonly ask me, “How strong will my staked joint be?” Usually, they are designing a plastic assembly that needs to be staked, and they need to know how to design the part so that it will be strong enough for their application. They are looking for a straightforward answer, like 450 N. If they know how strong one stake point will be, they can plan how many stake points they need and where to locate them. The good news is that we can estimate the answer…

Why is my plastic sticking during the staking process?

Why is my plastic sticking during the staking process?

This question has been posed to me by many customers. I hear statements like, “The machine works great for a long time, and then we suddenly get all of this sticking and stringing.” This issue is somewhat common in most types of staking technologies and varies in severity among different thermoplastic materials.

Hide those unsightly gaps

Hide those unsightly gaps

Staking stretchy cloth material can be challenging. In the initial design of this gap hider, the bosses were very tall and parallel to each other which created some difficult staking angles at either end of the bracket. Extol recommended…

Staking flexible LED circuits

Staking flexible LED circuits

This tricky application consisted of the LH and RH versions of both the Liftgate and Bodyside tail lamps, for total of (4) assemblies to be staked. Each assembly had (32) stake points to be staked simultaneously…