Moses
Exodus 38:7ESV·traditional attribution
And he put the poles through the rings on the sides of the altar to carry it with them. He made it hollow, with boards.
Matthew Henry Presbyterian @wholebiblehenry
Bezaleel having finished the gold-work, which, though the richest, yet was ordered to lie most out of sight, in the tabernacle itself, here goes on to prepare the court, which lay open to the view of all. Two things the court was furnished with, and both made of brass: - I. An altar of burnt-offering, Exo 38:1-7.
Commenting on Exodus 38:1-8