| Thinner | Drying Time | Comments |
| Kerosene | Slow | Use in small amounts |
| Oderless Mineral Spirits | Slow | ` ` |
| Mineral Spirits | Medium | Good for brushing |
| Turpentine | Medium | Rosin content can effect hardness |
| Xylene | Med/Fast | Best for conversion varnishes |
| Naptha | Fast | Best for spraying when cold |
| Toluene | Fast | Strong odor |
| Acetone | Fast | When applied over previous coat may cause wrinkling |