I also own an old SB45 that I'm restoring and for this one I stripped the mower completely, had the reel and bedknife beadblasted and painted prior to sending them away to be sharpened. I used a local Queensland firm and as far as I can tell they did a good job though I haven't refitted them to the mower base yet. There must be someone in the ACT who can do this for you ...
The guys I used were GA Power Equipment Spares (
www.gaspares.com.au) in Sodium Street, Narangba.
Good luck with the rebuild,
Chris
