Newbie who needs guidance how to print cassette player gears and idlers

[hdtvjeff]

Hi everyone,I haven't posted here in a few years and quite actually never unboxed my 3d printerThese are my questions pleaseThe idler from a cassette player pictured has been glued back together.Since I already have the scanner, what else do I need to buy including software to scan the glued back together idler so it becomes a file that can be made so I can print out a new part ?Also, if I buy the additional parts Can I change the original scan to increase the diameter of the idler if I needed to?Also, most importantly, would the stem and hole in that stem reaching downwards to the bottom be copied to or would I manually have to drill and bore through it?Many, many thanksJeff