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Old 12-29-2015, 05:53 PM
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Default Re: 1:350 TOS Light Cruiser

Continuing on what seems more of the same boring stuff. Progress Updates Soldier on…

The photon torpedo tubes were drilled and filled with brass tubing on the lower primary "hump".

Originally, the plans called for the photon tubes above and on either side of the main sensor on the secondary hull. This proved to be a little too close for comfort to clearing the primary hull directly in front of it. I may still install tubular shapes in this position as possible tractor beam emitters.





The Big Milestone was the casting of the secondary hull master.

This was begun by surrounding one half of the master in clay and then walled in foam core. The exposed half was then covered in Smooth-On silicone rubber. Once cured, the walls were removed, mold flipped upside down and clay peeled off. Leaving the master in the mold and spritzing the rubber and master in mold release, the wall was reset and filled with more rubber.





After the mold cured completely, the walls were removed again, rubber carefully pried apart and master removed. To cast, a mixture of SmoothCast 300 resin was poured into one half of the mold. The other half was quickly placed over the first and rubber banded together as I rotated the mold by hand in all directions as the resin cured. This resin cures in about 4-6 minutes so you have to work pretty fast. The first casting came out pretty good but the bulk of resin had settled too much towards the top and the skin thickness was too thin along the sides. Adding a little more resin to the second casting and concentrating the rotation to the hull sides insured a much more even Lucky #2 cast.



The main sensor shroud was also cast in resin:


Last edited by AdmiralBuck; 08-14-2017 at 08:56 AM.
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