https://www.amazon.com/Ryobi-P601-Lithium-Cordless-Included/dp/B071V2XFS8
https://www.amazon.com/Bosch-1617EVSPK-Woodworking-Router-Combo/dp/B00005RHPD
3d printing a jig is a good idea but you kinda need a mill. IDK where you live but look at any store that is focusing on milling tools to find the right bits.