I suspect he maybe after non British denomination. No idea what plastic Aristocrat used, but as mentioned they would take a beating, Also 3D is still not cheap cheap cheap. The other thing to consider, if for example you wanted to convert to Kroner, you would need matching other components like coin acceptor parts (coin entry ring, acceptor weight lever and adapted diameter shims) coin tube, slide cover, lower lever guides and most importantly the slides posts to match slide height. Some of these can be manipulated to adapt to another coin, depending of the amount of change involved.
A number of people have had lots of success with 3D on Allwin coin parts and other areas and it seems a few people have the skills and software on this forum....I am awaiting for very very cheap 3D machines and fully automated software for simpletons like me with small pockets..