Cube or Triangular Assembly Brackets

[lmconsumerconnex]

Hi Everyone,

I’m looking for an assembly solution to connect two pieces of acrylic at a right angle. I’ve been looking for an aesthetically “clean” looking solution and found the below items and links. I don’t know the market that these are used for but I originally thought I could find these for a little lower price. I’ll need several hundred.

Has anyone found anything similar? Maybe in a price range of $0.30 - $1.00.

The top features I’m looking for are:
-Threaded holes
-no bigger than 3/4" wide and 3/4" tall
-clean edges

The triangular would be ideal, but also looking for the cube (or similar products)

Triangular
https://www.aliexpress.com/item/33019219412.html?srcSns=sns_SMS&spreadType=socialShare&bizType=ProductDetail&social_params=20193054210&aff_fcid=68e7be550d594c0a8c20f76d06220829-1621488652315-07070-_mPPnthn&tt=MG&aff_fsk=_mPPnthn&aff_platform=default&sk=_mPPnthn&aff_trace_key=68e7be550d594c0a8c20f76d06220829-1621488652315-07070-_mPPnthn&shareId=20193054210&businessType=ProductDetail&platform=AE&terminal_id=6ce4b9c1c7c64c959ede78046b03084d

Cube:
https://www.aliexpress.com/item/1005002402525094.html?srcSns=sns_SMS&spreadType=socialShare&bizType=ProductDetail&social_params=20192492421&aff_fcid=4a964113ad8a4fbe9ad62862b412dccd-1621488700166-08509-_msmheBX&tt=MG&aff_fsk=_msmheBX&aff_platform=default&sk=_msmheBX&aff_trace_key=4a964113ad8a4fbe9ad62862b412dccd-1621488700166-08509-_msmheBX&shareId=20192492421&businessType=ProductDetail&platform=AE&terminal_id=6ce4b9c1c7c64c959ede78046b03084d

https://www.ebay.com/itm/202360363600