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[http://Adrestyt.ru/user/LupitaAhmed/ related metal surface preparation guide] surface preparation around corners and joints requires attention to geometry as well as cleanliness. Inspect edges, recesses, fasteners, and changes in thickness before abrasion or wiping begins. Keep the original defect boundary visible so preparation does not erase useful inspection clues.<br><br>Divide the area into controlled sections and remove loose contamination without packing debris into seams. Brush accessible faces, then examine corners again under good light. If movement, deep corrosion, or inaccessible residue appears, pause rather than extending the work blindly. End with a brief preparation record that identifies cleaned zones and areas still requiring evaluation.