Tatoo Machine and grip

Those are the STL's of three different models of tattoo machines ready to print.
I have print them in ABS and the result is fine, but I think it's better to print them in PC (Polycarbonate) because this material is sterilizable.
By other hand, there's a grip STL. I have print it in Nylon and it works very well. I have sterilizate my grips and they resist 5-6 autoclave sterilizations.
There are tattoo artist using them and the results are pretty good as you can see in the photos.
The only thing that the machines require is a little metal plate to join the coils and conexions and it will work!