A note about the Stumpy version:
He took the Windsor No. 33 from Harbor Freight. Iron is very thick. Mouth opening is just about right for use as a scrub plane. Plane is a #3 size.
He ground a 3" radius. Plane has no chipbreaker. Nor will one fit.
He was at the time lamenting the high cost of the Stanley #40, and #40-1/2 scrub planes. The Windsor, at that time, sold for $9.95 + Tax.
He was also targeting woodworkers whom did not have a large or sponsored budget for tools, yet still wanted to do woodworking.
I had one of the Windsors for a while, and ground the iron as a scrub.....hungry little beasty. But, it was a bit on the small side....you wear yourself out using it all day long.
I did find a $6 No. 5 ( Corsair C-5) and made that into the shop's scrub plane. 8" radius..
Have sharpened this maybe twice over the years..
And NO, I do NOT grind the chipbreaker to match..
Scrub planes are NOT for see-through shavings....get that thought out of your head right now. They are to prep rough sawn stock to almost flat, by taking THICK shaving while going at 90 degrees to the grain...
These are what Moxxon was talking about, and what you need to see as far as "shavings" are concerned.
Wait until a smooth plane is called for, before you worry about thin shavings..
Like a Stanley #3,Type 11.
Windsor No. 33 scrub plane at work...
And the Corsair C-5 Scrub jack at work...(have sharpened the iron twice since then...)