I need to "baby-proof" this corner glass bracket by securing it to the glass walls of the balcony, at each of its 3 levels.
Since there are no holes through which to pass any rope/wire, I thought about using something double-adhesive like a suction cup. But I could not find any products that would fit, and do the job.
Any ideas would be appreciated!
If we let OP do the parenting and focus on attaching a tube to glass in a harsh outdoor environment:
Get a security anchor base plate AKA "cable lock anchor". The linked one is just an example, you can find others. Remove and discard the included adhesive pads. They won't withstand heat and sunlight from behind.
Use a UV-curable glass glue to attach the anchor to the glass. Do some research to find glue that explicitly lists long-term resistance to UV light and heat as one of its features.
Use a metal hose clamp (not plastic cable ties) to attach the pole to the anchor.
silicone. that's how aquariums are put together, sheets of glass are joined with silicone at the edges.
You can always test it yourself: silicone each of those three pieces of glass to the wall, and let it cure, then try to pull the shelf down yourself. If it can hold up to a human adult, then the toddler will be okay. If it fails the test, or when the toddler moves to college, you can use a razor-scraper to remove the silicone.
Ignoring the context and answering the question strictly as asked, consider attaching it to the ground instead of to the glass wall. It's hard to discern materials from the photo, but the legs look metal. If you weld a nut inside each of the legs, you can run bolts up through the wood to anchor it down.
