i still get a confused language impression from that. for me it's the combination of "drill" and "through" (probably was forced to take too much 'wood shop')

i still get a confused language impression from that. for me it's the combination of "drill" and "through" (probably was forced to take too much 'wood shop') i think it would be more clear to phrase it starting along the lines of: position a cylinder concentric and inscribed within a sphere ...