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How is it made - concave jeweler's burr

How is this made?

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Bazyle21/01/2022 12:14:02
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On another forum there is a discussion about reforming 3D printed blobs into rivet heads using cup burs like this.

I'm wondering how they are made. If it were say 2 inches diameter I could imagine cutting, hardening, grinding but these things are barely 1mm diameter.

Michael Gilligan21/01/2022 16:20:37
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I certainly wouldn’t like to try making them for that price !!

MichaelG.

.

Drool … https://www.busch.eu/en/products/jewellery/application-videos/

Edited By Michael Gilligan on 21/01/2022 16:40:35

Bazyle22/01/2022 21:45:03
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A little disappointed that nobody has taken up this challenge.

My best guess is to bang them onto some kind of male die that has been made by EDM using perhaps a sharp blade one tooth at a time. Harden after forming and not bother to try any secondary sharpening.

Baz22/01/2022 22:13:24
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Most probably stamped out and hardened, being jewellery related they are only going to be used on silver and gold, not hardened tool steel.

Michael Gilligan22/01/2022 23:08:05
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Posted by Bazyle on 22/01/2022 21:45:03:

A little disappointed that nobody has taken up this challenge.

My best guess is to bang them onto some kind of male die that has been made by EDM using perhaps a sharp blade one tooth at a time. Harden after forming and not bother to try any secondary sharpening.

.

dont know

Oh dear … I really doubt they are made like that ^^^

didn’t you look at the link I posted ?

There is a video of the 411 in action … and if you browse the site, you might eventually find this: **LINK**

https://www.busch.eu/fileadmin/custom/pdf/busch_J_411CT_de_en.pdf

MichaelG.

Michael Gilligan22/01/2022 23:41:22
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Michael Gilligan23/01/2022 00:14:45
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I still don’t know how they make them … but here’s a bit more info. **LINK**

https://www.pfingstco.com/busch/

and a catalogue for the Jeweller's items: **LINK**

https://www.pfingstco.com/get15a.php

MichaelG.

Speedy Builder523/01/2022 07:03:31
2590 forum posts
207 photos

Sounds like a good tool for rounding the ends off on small Ba threads once a bolt has been cut to length.

Bazyle23/01/2022 12:22:18
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6295 forum posts
222 photos

Thanks for the earlier link Michael. Just need to make a 1 thou wide slitting saw first laugh

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