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What kind of Fastener is this? Answered

As usual I've been taking apart things and I've noticed an unusual fastener, it looks like a rivet but its melted plastic. I was just wondering how it works (i.e. how they melt it, special equipment or diy?). My xbox had one on it and I've noticed a couple of other electronics that have them as well. Googling plastic rivet didn't give me anything close. I do a lot of repairs so adding a new fastener to my list would give me more options for making a repair / mod look more professional. I took a pic of it below.


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Lorek (author)2010-12-19

Thanks, googling ultrasonic welders came up with a wealth of information about the process. I'll have to see about building a DIY version, maybe an instructable we'll see if its doable.

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steveastrouk (author)2010-12-19

As L. Says, but quite often they are set by ultrasonic welders.

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lemonie (author)2010-12-19

Yes it's melted-plastic "riveting". The round bits were plastic sticks until they were squashed with hot-metal.

L

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