This Star Wars inspired Fusion reactor uses a simple Fitter Glass Pendant Lamp Shade and Cord as the Fusion Core. https://www.lowes.com/pd/Portfolio-6-3-in-H-7-in-W-Silver-Explosion-Art-Glass-Globe-Pendant-Light-Shade/1000220437 any sized fitter will work. The 3D effect is painted inside, but a simple clear one can be used too. Using different colored bulbs will produce other effects.

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