HF and water miscible?
Aqueous hydrofluoric acid of commerce is 48 wt-% HF, which averages tight to hydronium fluoride, $\ce{H3O^+ F^-}$.  You can snug 100% HF as $\ce{3 HF}$ being in equilibrium with $\ce{H2F^+ + {FHF}^{−}}$.  However, there is no concentration of HF that will separate into two liquid phases or a solid phase with solution at ambient temperature and pressure.

Hydrofluoric acid is exceptionally aggressive and lethal toward tissue by contact.  Effects can be delayed but not reversed.  Topical or infused calcium gluconate can ameliorate further damage.