There is no standard. I have two that are very different, and both of them
appear more curved than Andrew's. My antique German wood-bodied scrub with a
1-1/4" wide blade has an aggressive radius of only 1-1/2", whereas my Lie
Nielsen #40-1/2 has a 1-7/16" wide blade with a radius of 3". With the same
blade projection, the wood-bodied plane takes off less material, but is
easier to push.
--Chris 

Check out H-frame, the site for vintage Black & Decker Workmates:
https://h-frame.weebly.com/

-----Original Message-----
From: oldtools@g... [mailto:oldtools@g...] On Behalf Of Ken Wright
via groups.io
Sent: Wednesday, May 05, 2021 12:02 AM
To: OldTools Group
Subject: [oldtools] Scrub planes (was Re: flattening a large slab)

Gathered Galoots,

Andrew's post got me to thinking.  I have a crappy Stanley "Handyman"
#3 that I'd like to use as a scrub.  Can anyone recommend a radius to grind
the iron?  Or is that more a matter of personal taste?