SP13 first run - working well!
I've followed Steve's Clocks for a few years and downloaded (and paid for) a couple of his designs but this is the first one I've actually had time to build. Loving it - such a beautifully designed clock.
Right now I'm just testing the weight (2.7kg and running well) and as I have a some lead ingots but no lead shot, I need to design a new weight shell for my purposes.
Couple of comments - Steve's instructions use 3mm stainless bar, and 1.5mm music (piano) wire for the arbours. From my engineering understanding, brass is a better option as it's self-lubricating. I found both 1.5mm and 3mm brass rod for cheap on Amazon in the UK (search for Sourcing Map Brass Rod).
I also found some low cost low friction bearings on Amazon which I'm using successfully without flushing first (my pendulum has a free swing time of 9 minutes).
The clock looks like is running first time straight off the bench with no tweaking at all.
https://www.amazon.co.uk/dp/B0D8LD6MK9?th=1
https://www.amazon.co.uk/dp/B0FBS1C7CZ?th=1
https://www.amazon.co.uk/dp/B0D77F4TSN?th=1
Looks good. This is an easy clock to get running.
I specify music wire for the 1.5mm rods because it is always hardened. The brass you linked is listed as high hardness, which should be good. Brass can also be listed as soft, half hard, ultra machinable, or unspecified. Some of these might be too soft for the smaller diameter arbors.
I saw a guy on YouTube melting lead ingot using a pot with a small hole drilled in it. He held the pot over a tray of water to cool the lead as it dripped out. Of course, do this outdoors and use other safety measures when working with lead.