I have a shale/slate slab with some crinoid blooms and misc. other marine organisms----I have an assortment of Dremel bits and 3 sizes of air scribe stilettos.
I'm wanting information as how to begin--I've read that muriatic acid can be useful, with care and controlled exposure.
My concern is the fragility of the smaller/thinner objects next to the larger ,more sturdy ones.
What approach would be the best , least damaging way to go?
Any help will be appreciated!