Alternate method of drilling lockset holes in exterior insulated steel door

[Martik]

I do not have the correct drill attachment to do this but I do have some

1/2-3/4" metal milling bits. I was thinking of drilling the center out with a 1/2 bit then milling the 1 3/4" hole with the milling bit.

[marson]

buy a cheap holesaw. in terms of saving time and aggravation, it'll be the best ten bucks you'll spend.

[Stormin Mormon]

What brand of lock uses a 1 3/4 hole? I've been a locksmith for 20 years, and not heard of this brand.

[DT]

You can get a lock installation kit with hole saws, arbors and jigs to position them at any Home Depot for less than ten bucks.

-- Dennis

[Tekkie®]

Stormin Mormon posted for all of us... I don't top post - see either inline or at bottom.