Convert 29x .STEP files to .3DS files

Covert 29x . step files to .3ds files, (see this link for the files)

https://nelsonkastenopmaat-my.sharepoint.com/:f:/g/personal/sijmen_nelsonkastenopmaat_nl/Egzi4tjI_sNGhMYY8VbzwvYBAcctDqrnyp0MD6I_Xa8GVQ?e=Kz1oVL

(make it ready within 4 hours)