David,
If you want to use BLO, you might try Winsor and Newton Refined Linseed Oil. This is artist's oil and is avaialble at Joann's. I've found it dries much better than convential BLO. (Seems I read somewhere that Japan Dryer contains a carcinogen.) The BLO (RLO)/turps/carnuba mix is much like the original Slacum oil. I've used this with and without Venice turpentine which was in the original recipe. I think I prefer it with the Venice turpentine which is available at the better stocked Tack stores. I use pure carnuba in the solid form and melt before mixing it into the warmed BLO(RLO)/turps. Back in the day they mixed it all up in a double boiler type arrangement. Search slacum oil here and you'll find a more detailed thread.
Have fun.
Phil
