plasticair

What it does

Optimize airflow and ideal fan size with for any application Plasticair Environmental’s advanced Resources & Tools, including user-friendly calculators.

• IB
  I built an under-the-door fan duct to lower bedroom CO22025 · lepekhin.com · ▲64

  Hi HN, This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm. I designed a simple, 3D-printed fan duct that directs air under the door to improve air circulation. A note on the design process: I used CadQuery, a Python library for creating parametric 3D models. I didn't know tools like this existed and highly recommend it if you can program; it turned out to be more convenient than manually iterating on prototypes in a GUI. The project is open source and the post explains the full build. Happy to answer any questions.

• 
  SizzleAirMay 2026 · sizzleair.app · ▲97

  Thermal assistant for fanless MacBook Airs

• 
  blö2018 · ▲87

  Wearable cooling device and diffuser

• 
  Coolingstyle2018 · ▲105

  A portable, multifunctional air conditioner ☃️

• 
  AirProof AIAug 2026 · airproofai.com · ▲70

  Find the best spot for your air purifier in seconds

• 3P
  3D printed PC with only 1 fan2022 · github.com · ▲15

• 
  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• 
  HyNote for Mac▲383

  Free local transcription that is 100% Private

  Work · 17d ago · hynote.ai

• 
  VoiceOS App Store▲330

  The app store for voice native apps that lives in your notch

  Work · 28d ago · voiceos.com

• 
  Scrimba Explain▲325

  Ask any question, get a video back instantly

  Work · 24d ago · scrimba.com

• 
  CleanShot 5.0 with Studio Mode▲278

  Mac-native app for screenshots, recordings and collaboration

  Work · 5d ago · cleanshot.com

• 
  Brila▲1,367

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

• IB
  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

• 
  Fathom 3.0▲803

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• BC
  Brutalist Concrete Laptop Stand (2024)▲786

  Life & fun · Apr 2026 · sam-burns.com

• IB
  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app