03-06-2009, 08:11 PM
Mark Alfrey's DVDs are great. He's a pretty cool dude too, emailed me back and forth and answered many questions and provided some good tips when I ordered from him.He uses Chavant NSP Medium, which I highly recommend. Many people use water based clay since it's less expensive, but it does dry out if you don't keep it moist and covered. Oil based sometimes is harder at room temperatures, but will never dry out. This is great for people like me who take a long time to finish detailing a sculpt. I like the harder variety since you can tool finer details, and it holds up shape really nice. But you have to warm it first to soften it up.Also, if you intend to make silicone molds, make sure your clay is sulfer-free.