A deburring tool like this is a handy thing to have around: https://www.amazon.ca/Deburring-Rotary-Remover-Plastic-Aluminum/dp/B07D1MMYTM/ref=sr\_1\_7?keywords=burr+knife&qid=1639621336&sr=8-7
Op, buy a 10 dollar deburring tool and run it around the edges of that to take off the cutty-hurty angles.