From: "Jim Adams"
I made a plug from balsa and finished it to a smooth finish.
Using two aluminum pans (the kind that you throw away). Fill the first one with plaster took the balsa-bulb (well waxed) and placed it in the plaster half way in. I used two pins through the center to hold it down.
Let the plaster harden, then pull out the balsa-plug. Next put thin saran wrap over the mold and place the balsa-plug back in the mold. Now comes the fun part I used rubber bands to hold the plug in place (remember I had two pins that extend past the mold walls). Fill the second pan with plaster and lay the first on top, it is kind of messy but it works. When the second half hardens (about two hours) pull them apart. You will need to plug the holes at the ends on the sides and create small air path upward in the and a spur (looks like a funnel when you are done this needs to be big enough to pour in the lead) at the end.
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Pouring molten lead is dangerous. The plaster mold which Jim Describes must be absoultely dry and free of moisture or the lead can spray out ot the spur.
Building a wooden model sailboat made simple. Enjoy the pleasure of wooden model boat building. Based on the International Star Boat this semi-scale Star45 can be scratch built by novice or seasoned skipper. Easily radio controlled and large enough to see out on the water this is a model built by hobbyists for over thirty years, Downloadable plans {drawings, prints} on-line. Laser cut bulkheads available from hobby suppliers.
This is a member blog of Dave Mainwaring's Knowledge-Network
Short video about building wooden Star45 radio controlled sailing model
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