thang010146 | Telescopic shelves 2 @thang010146 | Uploaded 1 year ago | Updated 2 days ago
Pull the lower shelf then the upper shelf moves out synchronously.
Brown racks are fixed to the box frame.
Pink racks are fixed to the lower shelf.
Bearings for the gear shafts are fixed to the upper shelf.

STEP files of this video:
mediafire.com/file/2flueos8twautm2/TelescopicShelves2STEP.zip/file
Inventor files of this video:
mediafire.com/file/ysksa2w3g8srpub/TelescopicShelves2Inv.zip/file