In Reply to Ncik comments about moulds constructed in MDF. Unless the temperature where you live is reasonable steady, dont even contemplate using MDF for any kind of materials for the use of plugs for hull manufacture.

We have just been thru a very testing & frustrating period becuase we underestimated the amount of movement that occurs in MDF thru temperature change. <img src="http://www.catsailor.com/forums/images/graemlins/mad.gif" alt="" />