The only macro you'll need (for right now anyway) and another one.

[EvianEverdeen]

EDIT: I updated the macros, adjusting for accuracy and enhancements after hearing player input and doing more of my own testing. Please see the updated, cleaned up, and more refined version of this guide here.

Macro Description: 1-star, Lv.70, 70 durability (also works on <Lv.70 and 80 durability too).
Starting Quality: 100% HQ from all NQ materials (may need a Good condition or two, slightly more Control, or a HQ material to fully achieve 100% HQ, more testing underway).
Food: Tempura Platter which can be purchased from an NPC (Kurogai - Independent Culinarian) in Kugane at 12.2x/12.6y. Just need it for the 43 CP only. You may even find it cheaper to craft out at least HQ Bouillabaisse or some other food like HQ Baked Onion Soup if you find that easier, since you can pop out three at a time and it's inexpensive.
Macro Credit: Tweaked version of Ermad's macro (link) with enhancements made by Bdyer (fourth post down) and Evian Everdeen (of Midgardsormr).

Macro 1
/ac "Muscle Memory" <wait.3>
/ac "Comfort Zone" <wait.2>
/ac "Inner Quiet" <wait.2>
/ac "Manipulation II" <wait.2>
/ac "Steady Hand II" <wait.2>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Steady Hand II" <wait.2>
/ac "Prudent Touch" <wait.3>
/ac "Comfort Zone" <wait.2>
/ac "Prudent Touch" <wait.3>
/echo Now hit Macro 2!

Macro 2
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Steady Hand" <wait.2>
/ac "Piece by Piece" <wait.3>
/ac "Innovation" <wait.2>
/ac "Great Strides" <wait.2>
/echo CHECK CONDITION: If Good or Excellent hit Macro 4. If not, then hit Macro 3!

Macro 3
/ac "Ingenuity II" <wait.2>
/ac "Byregot's Blessing" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III"
/ac "Careful Synthesis II" <wait.3>
/echo Done!

Macro 4
/ac "Byregot's Blessing" <wait.3>
/ac "Ingenuity II" <wait.2>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III"
/ac "Careful Synthesis II" <wait.3>
/echo Done!

Note 1: There does seem to be an issue in certain instances when the HQ came out somewhere in the 90% range instead of 100%. It appears like this macro may need a Good condition or two, slightly more Control, or a HQ material to fully achieve 100% HQ. Going to test more and I will update as necessary, but I've still been using this to 100% HQ!

Note 2: This is how I stylize my all my macros, but I guess four macros are not really needed if you're not too concerned with Byregot's Blessing going off on a possible Poor condition. You may use the alternative macro (see below) and chill with only two macros, but I really don't suggest it.

Note 3: The macro finishes with three Careful Synthesis III and one Careful Synthesis II. When I meld further, I'd like the four Careful Synthesis III to go off for OCD purposes in case you were wondering.

Here's the alternative version (use at your own risk!):

Macro 1
/ac "Muscle Memory" <wait.3>
/ac "Comfort Zone" <wait.2>
/ac "Inner Quiet" <wait.2>
/ac "Manipulation II" <wait.2>
/ac "Steady Hand II" <wait.2>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Steady Hand II" <wait.2>
/ac "Prudent Touch" <wait.3>
/ac "Comfort Zone" <wait.2>
/ac "Prudent Touch" <wait.3>
/echo Now hit Macro 2!

Macro 2
/ac "Prudent Touch" <wait.3>
/ac "Prudent Touch" <wait.3>
/ac "Steady Hand" <wait.2>
/ac "Piece by Piece" <wait.3>
/ac "Innovation" <wait.2>>
/ac "Great Strides" <wait.2>
/ac "Ingenuity II" <wait.2>
/ac "Byregot's Blessing" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III" <wait.3>
/ac "Careful Synthesis III"
/ac "Careful Synthesis II" <wait.3>
/echo Done!

Note 4: If you're really concerned about Byregot's Blessing going off on a Poor condition, please use the original four step macro!

EDIT: I updated the macros, adjusting for accuracy and enhancements after hearing player input and doing more of my own testing. Please see the updated, cleaned up, and more refined version of this guide here.