![]() With lithium ion battery installations running around $405 per kilowatt-hour, Ambri’s battery technology is already poised to be somewhat disruptive at a cost of about half that. One that seems to be bucking this trend is the liquid metal battery, which startup Ambri is putting into service on the electrical grid next year. Multi-layered solar panels, wave and tidal energy, and hydrogen fuel cells are all things that are real but can’t seem to break through and overtake other lower cost, simpler, and proven technologies. Whether that’s due to cost issues, production, or scalability, we’re often teased with industry breakthroughs that never come to fruition. The news is rife with claims of the next great thing in clean energy generation, but most of these technologies never make it to production. Thanks to for sending in this tip.Ĭontinue reading “Opening A Curta - With Great Care” → Posted in handhelds hacks, Teardown, Tool Hacks Tagged Curta, mechanical calculator ![]() We also wrote a Retrotechtacular about the Curta before. If you want to brush up on your Curta knowledge, check out the Curta Calculator Page. Has anyone dismantled a mechanical contraption this complicated before, for example a teletype machine? Let us know in the comments. There is still a little more work, but soon this calculator will once again be cranking out results. Most of the issues were shafts whose lubrication had become gummy, and one carry lever was slightly bent. ![]() Inside the Curtaīut surprisingly, he was able to get it substantially back in working order without completely taking apart all 600+ parts. I’m sticking to the rule of doing no harm - I’d rather not be able to fix this than do something that causes more problems. No doubt this calculator had suffered a drop at some point in the past. Just opening the case involved percussive force to remove a retaining pin, and once inside he discovered the main shaft had been slightly bent. A friend sent him a Curta Model 2 calculator that was frozen up. We’ve always admired Curta mechanical calculators, and would be very hesitant to dismantle one.
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