Fly Cutter Attachment for Lathe Faceplate

[garage nut]

Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project

[Toolmaker51]

Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project

There is a mysterious entity in the HomemadeTools.net wheelhouse. He senses issues we have with projects, and he brings out related posts. This appeared today...... http://www.homemadetools.net/forum/s...-17#post102983

How this mystery started is unknown, but is growing to legendary proportions, and we minions have all the fun.
Kinda like Santa Claus.......

I forwarded the cutting disc in angle grinder post to garage nut; unaware 30 x 30 was square bar stock. My picture was a sheet of plate, lol.

[olderdan]

Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project

I assume you are using a lathe for this, if so its a classic use of a 4 jaw chuck.
U tube is the place to go for machining tutorials, example

[12bolts]

Toughness maybe. Or hardness.

Depending on the stiffness of the steel

But Youngs modulus tells us that pretty much all steels are pretty much the same "stiffness"

[mklotz]

Toughness maybe. Or hardness.But Youngs modulus tells us that pretty much all steels are pretty much the same "stiffness"

True, but I was referring to the stiffness of the shape, not the material. Since I used a C-section, I was concerned about it deflecting while cutting. A stiffer shape would be better.

I probably should have worded it more clearly.

[Toolmaker51]

re questions about tool form.
Fly-cutters skim, so avoid a too-negative leading edge that pulls into the work. The face does most of the finish shearing, a radius or angled leading edge 'roughs' stock a few turns ahead of that.
A successful turning tool is not too far from a good fly-cutter.
As a side note.
Occasionally, I need minimal tool marks in a recess. I grind 1 flute off a new & proper diameter 2 flute end-mill.
Voila! Mini fly cutter.