Cards for creating a zipper (fastener) with a slider
You can use them in your projects except for the models sold in stock.
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Texture resolution – 1024 x 1024 px which is quite enough even for close angles
On the TurboSmooth slider with two render iterations
The principle of creating a lightning can be seen in this video:
https://youtu.be/YeA_IuRNt0c 
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In the archive:
2014 and 2016 MAX (Corona + VRay) + OBJ + MTL