Telescope Making
Grind and polish your own mirror, then build the telescope you stargaze with.
~$190Cost to start
SteepDifficulty
1–3 hrTime / session
Is it you?
Nobody has scored this against your answers yet. 1–3 hr at a time, $190 to find out whether it sticks.
MessSome cleanupNoiseSome noise
The path12 quests
ASetting up2 things to sort, in any order$120
- Find a club that runs mirror-grinding sessions
- Get a mirror kit and a way to test it
Then the quests
- Rough grind a curve into the blank
- Measure your curve and hit the focal length you planned
- Work through the fine grinding grits
Same shape of evening, different thing to hold at the end. Or follow a tag sideways.
Machine miniature working engines and live steam locomotives on a lathe, part by part.
Robotics$140
Build a machine and write the code that makes it move on its own.
Cut and engrave precise designs into wood, acrylic, and more.
Drone Building$320
Solder and tune your own FPV quadcopter, then fly it first-person through the air.