After being adjusted, the compound rest shows two issues: The motion screw exhibits a play that cannot be decreased. Provably the adjustable nut is severely worn. The crank has a fixed friction point when turning. No hints about the causes. The compound rest has been dismantled and thoughtfully cleaned. First it was necessary to make a special socket wrench for the adjusting nuts of the compound gib. Next picture shows the wrench.

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Let’s start by refurbishing the tailstock, which seems to be in pretty good condition. The tailstock is designed in such a way that its quill remains fully supported despite its position. It’s a typical construction of some precision machines. The tailstock is fixed to the bed using a lever that acts on a cam lock. The quill is locked by a usual half-moon clamps. The fit of the quill is very good, especially in the first part of the displacement.

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sBs

An unusual software engineer working on dirty and greasy machines

Catalonia