A low VOC Biodiesel solvent system that is compiled from methyl esters and vegetable oils. Together with DMIPA amine gas, resin usage and cycle times are drastically reduced while still making a quality core and providing higher productivity. Better release from the corebox reduces damaged cores, use of less release agents along with providing much less odour. Cores made from BioCure and coated with a aqueous based refractory coating become stronger. Low VOC’s with 30% lower HAP’s provides environmental benefits for the foundry.