Alex Boniske
@AlexBoniske
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engineer, previously @miraGlasses | dms open
Joined April 2025
Lessons learned designing+building a (mostly) printed jet engine from scratch: - SLM metal prints require substantial post processing to achieve anything close to traditionally machined ones - Low-cost turbine balancing methods are very primitive - 🧵…
Tentative next steps for early 2026 if we continue: remachine the backup impeller for less pressure leakage,re-test, then build a turbine-burst capable test rig and attempt a run on kerosene
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Just received my first NDA for an engineering project consultation
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Modern CAD makes this style so much more accessible at least
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Dropping banger renders since I don't have storage limits
Just found out that Cloudflare supports unlimited bandwidth for static pages they host, no longer have an excuse to not host a personal website
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Just found out that Cloudflare supports unlimited bandwidth for static pages they host, no longer have an excuse to not host a personal website
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The prototype is far from perfect. Designed to spin at 110 000 rpm on kerosene, I only ran it on propane at under 30 000 because of machining tolerances. It could barely self sustain, likely from pressure loss and gaps in the compressor housing.
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🧵 2 - Companies like @Mach_Industries are onto something, soon a small system with a metal printer, lathe, and hand tools could produce high quality UAVs anywhere - Turbines are really hard; lots of respect @boomsupersonic for still innovating in the space
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This is my first fully designed and built turbojet. Designed for about 110 000 rpm and small UAVs, RC drones and single use missiles. Low cost, student built, and meant for distributed manufacturing with metal 3d printed parts.
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Tentative next steps for early 2026 if we continue: remachine the backup impeller for less pressure leakage,re-test, then build a turbine-burst capable test rig and attempt a run on kerosene
Blue flame gone at higher RPMs, but we suspect pressure inefficiencies limited our ability to self-sustain: big thanks to @marco_schonert for inviting me to join on this project
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Blue flame gone at higher RPMs, but we suspect pressure inefficiencies limited our ability to self-sustain: big thanks to @marco_schonert for inviting me to join on this project
Photos from testing are so good they look like clickbait thumbnails
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Photos from testing are so good they look like clickbait thumbnails
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Jet engine made @ Duke
Excited for the day to come where 3d printed metal parts can look this good without needing hours on the lathe
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Excited for the day to come where 3d printed metal parts can look this good without needing hours on the lathe
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Reamer day
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Post-processing and dry-fitting today
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SEO 📈
We just raised a $6.6M seed round led by General Catalyst, with participation from Pillar VC, Naval Ravikant, and others to build glasses that remember everything. Same vision, new name: Halo is now Mira. We’re building the first glasses to be your second brain. Instantly
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I've been preferring this to Strava recently, much better social/multiplayer engagement
Runbuds is now live on the App Store! We’ve poured our souls into making social running delightful again, with so much more to come.
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