Force to smooth a 1 mm surface bump out of a steel of sheet

[abdulbadii]

TL;DR Summary

How much force does it take to have 1 mm surface bump of diameter 16 mm circle area out of 1 mm thick steel plate

Roughly, how much force does it take to make 1 mm surface bump of diameter 16 mm circle area out of 1 mm thick steel plate of far larger area (e.g. a muscled hand pounding it laid over the base with 16 mm dia. hole by M16 bolt medium is viable enough) ?

 

[Baluncore]

It depends on the shape of the bump and how it was formed.

If a steep edged bump with a flat top was created with a punch, then the disc will now be free. It will take little energy to knock the punching back into the hole, but it will probably fall out again.

If the bump is conical, it will take as much force to flatten it, as was used to create it.

What shape is the bump, and how was it formed.

 

[Lnewqban]

Can you use heat on the steel plate?
Do you have access to a press?
Low or high carbon steel?

Please, see:
https://en.m.wikipedia.org/wiki/Forging

https://en.m.wikipedia.org/wiki/Planishing