Hi, I'm a water sports fanatic and have been building foil boards for a year as a hobbyist.    This involves laminating over a shaped foam blank.    I'd like to expolore hollow techniques and along the way learn CAD and CAM.   I'm not seeing much action on this forum, that is too bad.     If I post questions regarding plug making and mold making, will there be any responses?    I wonder why the activity dropped so much?