How to Make your own DIY Weight Plates with concrete

How I make my concrete weight plates with tips on using the printed molds now that I have made several and have had feedback.
Want your own set of molds? Buy them here https://www.etsy.com/GreenHornGarage/listing/882864822/cement-gym-weight-plate-molds-3d-printed?utm_source=Copy&utm_medium=ListingManager&utm_campaign=Share&utm_term=so.lmsm&share_time=1617908859671
Have a 3D printer and want to print the molds yourself? Find those files here https://www.etsy.com/GreenHornGarage/listing/937748883/digital-files-stl-obj-files-to-3d-print?utm_source=Copy&utm_medium=ListingManager&utm_campaign=Share&utm_term=so.lmsm&share_time=1617908891167