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   Breaking Taps (breakingtaps@universeodon.com)'s status on Monday, 30-Oct-2023 05:57:58 JST Breaking Taps

   Anyone have tips/recommendations for manual wire bonders? Been thinking about getting an ebay unit for ages.

   Wedge or ball? Gold or aluminum? Heat or ultrasonic? Any brands to specifically look for, or to avoid?

   • James Morris likes this.
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     Breaking Taps (breakingtaps@universeodon.com)'s status on Monday, 30-Oct-2023 08:03:53 JST Breaking Taps

     in reply to

     • James Morris
     • Nick Poole

     So this is an interesting idea someone just showed me: https://ephemeron-labs.com/new-products-1/8sr4jlt168t5rifluoslpgdys8qwd0

     Basically tweezers + XYZ stage and some silver epoxy. Would be super easy to DIY.

     Definitely not as slick as a real wire bonder but would probably work fine for low volume and large'ish pads

     Could pair it with Norland 130 for a more streamlined system (UV light to tack in place, heat to fully cure later). Not sure how conductive NCA130 is compared to traditional silver epoxy though

     cc @North @jmorris

     James Morris likes this.
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     Richard "RichiH" Hartmann (richih@chaos.social)'s status on Monday, 30-Oct-2023 08:04:37 JST Richard "RichiH" Hartmann

     in reply to

     • James Morris
     • Nick Poole

     @breakingtaps @North @jmorris and with enough xyz stages you don't even need the tweezers any more!

     James Morris likes this.
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     James Morris (jmorris@social.kernel.org)'s status on Monday, 30-Oct-2023 08:05:15 JST James Morris

     in reply to

     • Nick Poole
     @breakingtaps @North very interesting. Seems like it would be useful for epoxying tiny mmwave diodes, too.
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     James Morris (jmorris@social.kernel.org)'s status on Wednesday, 19-Mar-2025 14:49:45 JST James Morris

     in reply to

     • Helge Wurst
     @MisterHW @breakingtaps does goniometric offer an advantage over XYZ ?
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     Helge Wurst (misterhw@fosstodon.org)'s status on Wednesday, 19-Mar-2025 14:49:46 JST Helge Wurst

     in reply to

     @breakingtaps I used such a setup (but with goniometric stages) during my thesis work to contact III-V components.
     - stripped optical fiber as a tool
     - dip into epoxy droplet, pull up to neck down epoxy into a cone
     - touch bond pad with tip of epoxy cone

     resulting dabs can be 20-50 µm.