Not really, just watch out for the spinning corners that won't be visible once its revolving.

.

Likely to happen automatically, the first time you catch your hand

Seriously though: That'a an excellent idea [any bright colour will do]

Also: Double Check that the corners really do clear the lathe bed, before you switch on.

MichaelG.

If you have a belt sander smooth off the cut corners so there is less chance of a nasty cut if contact is made with your hand.

Doug

How do you intend to attach the plate to the lathe spindle ?

Why not roughly cut the plate to a circle and then finish it on the lathe ?

Paul.

Consider taking the extra time to turn it into a permanent faceplate substitute by adding a suitable mounting boss on the back to fit the lathe spindle. Grid of tapped holes plate is often much more convenient than the conventional slotted faceplate. Especially on smaller machines. I've used the aluminium breadboards from Thor Labs for similar purposes, they have 6 mm or 1/4 UNC holes in 25 mm or 1" square pattern which works pretty well.

If your plate only has holes consider tapping them, of if they are on the large side fit some tapped bushes. Tapped holes are generally easier to deal with than fiddling about with tee nuts behind the plate. 6mm or 1/4 threads will be fine for ME size work. Especially if you have plenty of holes its easy to add another screw or two.

Clive.

I use this one for big jobs on the milling machine.

It is set up for work on the Pollit & Wigzell flywheel at the moment.

Phil

No its true.

It has Wallace & Grommit valve gear as well.

Phil

Very lovely Phil.