NET

33 When Moses finished speaking with them, he would put a veil on his face.

Darby

33 And Moses ended speaking with them; and he had put^D662 on his face a veil.

Darby Bible Notes

put - The force would be. 'having (or, when he had) put a covering over his face.' Ver. 35 would, I think, imply that as long as he was getting these divine communications he kept the veil over his face except when he went into the sanctuary. 2Cor. 3, which has been alleged for the opposite view, proves this, for it alludes to the fact in saying of the veil on Israel's heart, that when they turn to the Lord it will be taken off.

KJV

33 And [till] Moses had done speaking with them, he put a vail on his face.