a utility knife with the proper THICK blades to score the line 2x on each side , then snap on a square table edge with a flat iron file placed on the top line .
+1 on the cheap dremel , although i got an 8 dollar kit , like they sell on harbor freight , then a 10 dollar used craftsman 60,000 rpm rotary unit . i use all the acessorys from the cheapo kit in the craftsman , i did have to buy the bushings/ fittings seperate for 5 though .
menards had a 15 dollar set of unibits , for drilling metal i use a syringe with oil in it , this has reduced broken drill bits to almost none . i use motor oil . just a small amount on the bit , same for when i use the uni-bit .
another contraption that is GREAT is this hobby grinder i built . its a 14.5 volt charger / batt that feeds an old cordless drill screwed down to the base . all my old cordless tools plug into its outlet i made on the front , even the dustbuster . so when the tools battery dies i cut in a cable and they run off the batt that is always being charged . even a 3.6 volt screwdriver will run off 14.5 , it screams too ! the 7 volt dustbuster actually dusts bust now . the battery hasnt died in YEARS . i can run 3 cordless drills , a predrill bit , a spade bit a phillips when wood working it save so much time and battery use .
i am sure all of this is wrong .