Reddit mentions of Stanley 58-230 3 - Piece Steel Nail Set

I use something like this on all my frames.

https://www.amazon.com/gp/aw/d/B000OL0U28/ref=mp_s_a_1_8?ie=UTF8&qid=1500461890&sr=8-8&pi=AC_SX236_SY340_QL65&keywords=picture+hangers&dpPl=1&dpID=31nJKniOUjL&ref=plSrch

Now this might not be the exact model as wider ones can hold more weight.

I find the center of the frame and mark it.

I use combination square to make a line on the back of the frame a half inch from the top.

Use the dot on the hanger to center it and knock the nails in place.

If you really want to go the extra mile, or maybe I'm just neurotic, I center the hanger and use a nail set to mark the holes. Then I use a drill and a small drill bit similar to the size of the hanger nail to make that mark about half as deep as the nail. Now when I attach the hanger, the nail doesn't move when I'm trying to knock it in. The nail set works for that too.

Nail Set

https://www.amazon.com/gp/aw/d/B000BQPGYI/ref=mp_s_a_1_4?ie=UTF8&qid=1500462479&sr=8-4&pi=AC_SX236_SY340_QL65&keywords=nail+set&dpPl=1&dpID=41OuNQ4YrML&ref=plSrch

Now all your frames are mounted at the same location and it aids in lining them up straight on the wall.

This is what I do..

Hammer + $4 for a nail set on Amazon and you don't have to worry about marking the face of your projects and don't have to store an air compressor.

http://www.amazon.com/Stanley-58-230-Piece-Steel-Nail/dp/B000BQPGYI/r