# Ep 362: Compression Molding, IPv4x, and Wired Headphones

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2026-03-20
- Length: 57m
- Episode: 362
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones
- Listen: https://hackaday.com/2026/03/20/hackaday-podcast-episode-362-compression-molding-ipv4x-and-wired-headphones/

## Summary

Hosts Elliot Williams and Jenny List discuss a variety of hardware hacks, including BasementBuilds' air hockey robot and FutureThings' compression molding of recycled PHA plastic using 3D-printed molds. They also cover speculative networking concepts like IPv4x, a new DR DOS implementation, and ternary relay-based computing by Brinkman. The episode concludes with a discussion on the pros and cons of wired versus Bluetooth headphones and the history of free dial-up ISPs.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=1) Introduction: Hackaday Europe and Mailbag
- [5:26](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=326) What's That Sound: Mars Seismometer
- [10:03](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=603) BasementBuilds Air Hockey Robot
- [16:17](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=977) FutureThings Compression Molding with PHA
- [21:55](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=1315) Speculative IPv4x Networking
- [27:36](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=1656) New DR DOS and Ternary Relay Computing
- [38:32](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=2312) Quick Hacks: 3D Printed Zipper and More
- [46:50](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-03-20-ep-362-compression-molding-ipv4x-and-wired-headphones#t=2810) Wired vs. Bluetooth Headphones and Free Dial-Up

## Topics

- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Chips, FPGAs & semiconductors](https://hardwarepodcasts.com/topic/chips-and-fpgas)
- [Direct-to-consumer & e-commerce](https://hardwarepodcasts.com/topic/direct-to-consumer)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)

## Most relevant to

makers and hobbyists

## Mentioned

- BasementBuilds (other)
- FutureThings (other)
- PHA (material)
- IPv4x (other)
- DR DOS (other)
- Brinkman (other)
- Mr. J (other)
- Plasmatron X (other)
- Greenhill Forge (other)
- John Elsonster (other)
- Mindan (other)
- Alan Boris (other)
- Al Williams (other)
- Kmart (company)
- AOL (company)

## Related episodes from other shows

- [51. Recapping 2021](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2022-01-05-51-recapping-2021) (The Next Byte Podcast)
- [Episode 155: Brain tornado-ing and pretzels](https://hardwarepodcasts.com/podcast/making-it/2018-02-09-episode-155-brain-tornado-ing-and-pretzels) (Making It)
- [300: Introverts Disperse!](https://hardwarepodcasts.com/podcast/embedded-fm/2019-08-22-300-introverts-disperse) (Embedded.fm)
- [Simulating doors falling off](https://hardwarepodcasts.com/podcast/the-amp-hour/2024-04-04-simulating-doors-falling-off) (The Amp Hour)
- [Episode 197: The hammerhead alligator](https://hardwarepodcasts.com/podcast/making-it/2019-01-11-episode-197-the-hammerhead-alligator) (Making It)

## Citing this page

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