On Wednesday, 24 July 2019 17:56:12 UTC+1, Scott wrote:
On Wed, 24 Jul 2019 17:10:19 +0100, Rob Morley
wrote:

On Wed, 24 Jul 2019 05:01:23 -0700 (PDT)
Mathew Newton wrote:

On Wednesday, July 24, 2019 at 10:07:35 AM UTC+1, Scott wrote:

Could the plasterer add 1-2mm to the plaster to create a level
finish?

Given the response so far I obviously haven't made my situation very
clear - apologies!

It seemed crystal clear to me.

I was puzzled why a protruding steel box would cause more damage to
tools than stone, brick or concrete that is commonly plastered over.

As is probably quiet evident I don't know much about plastering and associated tools, and was thinking perhaps the tools used for doing a skim coat might be of finer quality and more susceptible to damage compared to those required for what I assumed would be a rougher base coat.

If it's a non-issue I won't give it a further thought.