Of course us rough rustic types have an alternative 'recipe':

You need -
One very big compressor
2 Tonnes of "Blast Media" (formerly known as Sand)
Blast Pot, hoses and nozzles
space suits/deep sea diver outfits
Otherwise unemployable headcases to operate the above

Works a treat

Bill

The pessimist sees difficulty in every opportunity

While

The Optimist sees Opportunity in every difficulty