High precision air bearing CNC lathe and grinder

What it is

Dan Gelbart shows his home-built air bearing CNC lathe and grinder, which reaches about 1 micron accuracy. He demonstrates the machine and its parts.

Cited as a marvel of absurd precision in home-built machine tools, and a pointer to Gelbart's other videos.

“The creator (Dan Gelbart) demonstrates nitrogen-tight parts without bearings, and claims zero wear or lubrication needs.”
Builds 1 micron machines with air bearings, no lapping
paypalcust83, 2020-04 · Recommendation · in “Hand Scraping a Truly Flat Plane (1908) [pdf]”
“If you enjoy absurd precision and accuracy, have a look at Dan Gelbart's older videos”
Custom air bearing mill and grinder reaching 1 micron
hi-v-rocknroll, 2024-04 · Recommendation · in “My Homemade Metal Lathe Project”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: air bearings, cnc lathe, dan gelbart, diy machining, metrology