re: Show the restoration before and after.

That DP looks great! I'm always a fan of a well executed restomod.  Many of my circular saws are modded to some extent, especially with arbors.  Too many arbor options existed years ago for what the arbor should be, today there's primarily round 5/8"  1" & diamond for 7.25" & 8.25" worm drive saws.  The square, 1.375" round and large diameter (10" - 12" blades) diamond arbors are a PITA to find something for, consequently many are slated for modification to a readily available alternative.  Restoring them is fun but frivolous if they can't actually be used.