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| Lawn mower gearbox. © Eugene Brennan |
Using diamond burrs to square the teeth of the freewheeling gears from the lawn mower gearbox. They were rounded with wear and slipping. A bit like being a dentist (They use a similar tool, but it's pneumatically or hydraulically driven rather than battery powered. My dentist showed me all the bits they use) Almost finished now. Crude, but worth a try to see if it'll work. The alternative is €55 for a new one. Still have to do a MacGyver job on the driveshaft bearing which has worn and come apart. I've got lots of ball bearings, but none the right size.