This is designed to have the pause mid print and insert the keychain (see purchase chain link) then continue printing. I have included the Fusion model for your own modeling. With the purchased keychains, its easiest to close the jump ring on the end using two small pairs of pliers. Then the small ring is the end that gets put on the print when its paused. Then continue printing. Leave enough space for the chains to float below the print surface if your doing multiple on the same plate. Pause is on Layer 32.
https://www.amazon.ca/Paxcoo-100Pcs-Split-Chain-Crafts/dp/B09V55BSPK/ref=sr_1_1_sspa?crid=2MRVCGAT0YT6O&dib=eyJ2IjoiMSJ9.LuoiPRNEFX0S27qJronnMJrXinu_Lxc1FAKrTfuKrTTbdc3ldnvYJBN9rxuy60c5E0gLjZ4ouaQGATYp4Z_wsAW5Y_GSrM6fcoW3cZyyLyJyV1zbOvMbm6k7vRIDV1h6LeNC6fxohrIAwK7M-lU1G1gDK-22slbVmXzMeLp378MbIqRlDfpN_tuOlQS6F8Ci4RY87a745a-HlP5cHcAMER0ojr43wBE-5woKoDH0IiTDsWKK5kIaG7Fma9n6pQajea3YI96htDQe5u3btlXT1c8OZnf4fylJmDArXnOvc_A.kfzO25rRm5A6FcIEsGAiP_BLEegO8x3uinw1Gn8AE0Y&dib_tag=se&keywords=keychains%2Bbulk&qid=1758602992&sprefix=keychains%2Bbulk%2Caps%2C153&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1
Or find similar on Ali Express for less. Any keychain with a 3/8" jump ring should work.
The author marked this model as their own original creation.