A bolt with the screw from Thingiverse: http://www.thingiverse.com/make:182077
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A whistle from Thingiverse (no sound ): http://www.thingiverse.com/make:186249
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A handle designed by me and sliced with Cura, the hooking was measured with a digital caliper and designed with 0.2mm margin: works perfectly!!!)
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I have another model done in 3 parts that interlocks and is really beautiful but I cannot post as it's top secret for now...