# Ep 320: A Lot of Cool 3D Printing, DIY Penicillin, and an Optical Twofer

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2025-05-09
- Length: 42m
- Episode: 320
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer
- Listen: https://hackaday.com/2025/05/09/hackaday-podcast-episode-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer/

## Summary

Hosts Elliot Williams and Kristina Panos review a week of hardware hacks, including a deep dive into the failed history of Wireless USB standards, a DIY penicillin cultivation experiment, and a new 'Rapid Liquid Print' 3D printing technology for silicone. They also discuss a retrofitted iMac G3, PCB business cards, and research into PCB renewal via KiCad plugins. The episode concludes with an exploration of optical contact bonding and Schlieren photography for flow visualization.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=1) Introduction and Pet Hacks Contest
- [1:15](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=75) What's That Sound: The Glass Harmonica
- [5:18](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=318) Wireless USB Autopsy and History
- [10:12](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=612) 3D Printed Downspout and DIY Penicillin
- [15:45](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=945) Jellybean iMac Retrofit and Rapid Liquid Print
- [21:28](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=1288) PCB Business Cards and TPU Bellows
- [26:13](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=1573) Cabinet Taxi Monorail and PCB Renewal Research
- [27:54](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=1674) E-Paper Clock, All-Band Radio, and Spirograph Table
- [30:43](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=1843) Optical Contact Bonding and Schlieren Photography
- [39:58](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-05-09-ep-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer#t=2398) The History and Fate of 'www.'

## Topics

- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Careers & education](https://hardwarepodcasts.com/topic/engineering-careers-and-education)
- [AI & machine learning](https://hardwarepodcasts.com/topic/ai-and-machine-learning)

## Most relevant to

makers and hobbyists

## Mentioned

- Hackaday (company)
- Hackaday.IO (other)
- Cameron Kaiser (other)
- Dylan Stock (other)
- Thought Emporium (other)
- Rick Norcross (other)
- iMac G3 (product)
- ELO panel (product)
- Adafruit FX board (product)
- Joel the 3D Printing Nerd (other)
- Levity (company)
- Rapid Liquid Print (product)
- Jeremy Cook (other)
- KiCad (tool)
- Huaishu Peng (other)
- Maya Pasha (other)
- Tyler August (other)
- Lewin Day (other)
- YouTube (company)

## Related episodes from other shows

- [3D Printed Shark Jumps - Edifying Edison's Energy](https://hardwarepodcasts.com/podcast/the-amp-hour/2014-09-24-3d-printed-shark-jumps-edifying-edisons-energy) (The Amp Hour)
- [CAD courses and cross platform creation - Printing Propaedeutic Patterns](https://hardwarepodcasts.com/podcast/the-amp-hour/2013-11-20-cad-courses-and-cross-platform-creation-printing-propaedeutic-patterns) (The Amp Hour)
- [425: David Picciuto 7th Period](https://hardwarepodcasts.com/podcast/making-it/2024-01-12-425-david-picciuto-7th-period) (Making It)
- [#440.2 - Interviews with Greg Davill and Michael Ossmann](https://hardwarepodcasts.com/podcast/the-amp-hour/2019-05-01-440-2-interviews-with-greg-davill-and-michael-ossmann) (The Amp Hour)
- [100. Weaving Nanomaterials With 3D Printed Machine](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2022-12-13-100-weaving-nanomaterials-with-3d-printed-machine) (The Next Byte Podcast)

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