Machinery's Handbook recommends plant-based oils such as rapeseed (canola) oil for cutting fluid. I think most cutting oils you buy off the shelf are a mixture of mineral oil and rapeseed oil (with some additives probably). I tend to use my own blend of coconut oil and mineral oil because it smells nice when it heats up.
I don't think it's worth it in your case though. I'd just do it dry and avoid the mess.
extravisual t1_ir4a8rr wrote
Reply to Can i use 3 in 1 brand all temp fluid to lubricate drill bits when drilling (steel?) hinges? by drummerene
Machinery's Handbook recommends plant-based oils such as rapeseed (canola) oil for cutting fluid. I think most cutting oils you buy off the shelf are a mixture of mineral oil and rapeseed oil (with some additives probably). I tend to use my own blend of coconut oil and mineral oil because it smells nice when it heats up.
I don't think it's worth it in your case though. I'd just do it dry and avoid the mess.