The odachi's total length - often 55 to 60 inches including the tsuka - means standard katana wall mounts may not provide adequate support spacing. Use a nodachi-scale katana-kake or adjust wall brackets so both support points cradle the saya without placing stress on the habaki or kojiri fittings. Vertical floor stands are an equally attractive option that let the full curve of the blade and lacquer work on the saya read naturally. Wherever you position the piece, avoid direct sunlight, which can fade lacquer and ito wrapping over time, and keep the display area away from significant humidity swings. Apply a thin coat of choji oil to the blade surface every three to four months to maintain polish and prevent surface oxidation.