Wolf Sapphire Saw "6089" metrification - machining a new drive bushing

Marking a new saw blade bushing for a Wolf UK Electric Tools Sapphire 9 inch saw, so that it can accept new blades that have a 30mm bore.

By some these are considered a collectors item, they predate carbide blades being common place in the domestic market. Their unusual bore makes finding replacements difficult.
The 89 denotes the cut diameter in 1/10 inches, 9 inches ;)

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