After crush and strain, I rinsed the wax with warm water. Crushed wax was melted outdoors in a large thrift store slow cooker. I used one cup of water and cotton fabric to catch wax impurities. I set the cooker on high for nearly 2 hours and left everything to cool for another 4 hours. I repeated this cycle 3 times. Click on the photo and have a look at the tidy elliptical wax blocks.