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A Riveting Experience
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Categories: Jewelry; Projects and equipment

Word count/read time: 415 words; 2 minutes

Rivets are an incredibly strong mechanical connector and a great aesthetic for jewelry. Commercial sterling and fine silver rivets are quite limited. Besides, using them means the piece is no longer legally handmade.

Handmade matters which is why I make my own rivets. Shaping, filing, and sanding drain production time. The consistency was meh so it often involved making extras to get a respectable, matching pair. It's jewelry so all components have to be worthy.

I looked at rivet-making tools and the solution was obvious: Make a better version of my prototype. It will make every size rivet I've ever used and extras. Some people will say it is overkill - overkill was, like, ten steps ago! Seriously, it should endure for my lifetime so its annualized cost is quite low.

 
The drawplate makes wire a fraction oversized in some diameters, enough to throw a hissy.
 
Finish work on the rivets is significantly reduced. Removable plates ensure the perfect rivet head diameter. The head profiles can be domed/rounded, conical, or have other features; these are flat.

Not including rivet length or fancy add-ons, there are scores of combinations. Some quick calculations remove any guesswork about how much wire is required for a given head diameter and thickness for each of the five wire diameters at any finished length.

While I could have made this with many do-overs and a tetris of separate pieces, the pro machinists flexed their muscles. It was slowly transformed traveling to and from the machine shops: manual machining, wire EDM, then CNCed to final specs. First it was worth pennies as scrap, then $75, then $250, then even more.

The wire hole diameter was supposed to be tight. The drawplate makes wire a fraction oversized in some diameters, enough to throw a hissy. Sanding the wire for a few seconds is easier than re-machining my precision tool.

Also, if this drawplate becomes unusable and the new one is a tad off the other way then my modified tool would be sloppy. Drawplates are a lot cheaper to replace.

Another component is the graphite block that makes the blanks. It has holes the same size as the rivet tool (wow, what a coincidence). One more iteration and it should be finalized. Production will improve.

Would producing this tool make sense, outfitting the competition with tools I slaved so dearly for? The small market, if any, wouldn't make me rich at the expense of a lot of time. Besides, few people get excited about making a bazillion different sizes. Maybe I'll sell handmade rivets instead.


Posted by M: May 20, 2021


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