good idea that, John - thanks. I suppose the needle diameter should ideally be bigger than the spring, though? Allen On Jul 30, 2010, at 9:38 PM, John Delacour wrote: > At 13:44 -0400 30/7/10, PAULREVENKOJONES at aol.com wrote: > >> Burnish, and clean out the graphite gunk, with a soft lead >> (graphite) pencil tip. > > Yes. I use a 6B pencil for most graphiting. But where the spring > has crushed a dent in the groove it's important to crush down the > rest of the wood in the spring's track so that you have a smooth > track, and for that I'd use a very smooth steel needle with the end > suitably rounded, applying considerable pressure as you move it > back and forth. The only reason the spring digs into the wood is > that they don't bother to do this at the factory. > > JD
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