Counter shaft / lay shaft

[Pumpjack]

Will be following along, i have seen wood do some amazing things. the old man that teached me to do machine work build a wood turning lath from wood even the head stock with pressed in bearings. alot of old time oil riggers would use wood for bearings just keep them greased. So wood mock ups would not be something i would fret about. i guess i better add that those wood bearings had leather around the shaft if i would use more wood mockups i would have less scrap lying around. man thats alot of woods or woulds.