1)
What is "Ma'ase Shushan"?
1.
Refer to 7:19:1:1-3.
2)
Why does it mention that he finished making the pillars?
1.
Radak: There were many tasks and designs in them.
2.
Malbim: They were not finished after pouring the molten copper into the mold, until he beat the top with a hammer and extended each pillar half an Amah.