You need an auxiliary anode inside the bore. There are some limitations and trade secrets to do it right but even so, the obtained plate will not be uniform in thickness. That is just one of the reasons why electroless nickel has become so popular for that particular application.
Guillermo Marrufo Monterrey, NL, Mexico
finishing.com is made possible by ... this text gets replaced with bannerText
Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.
If you are seeking a product or service related to metal finishing, please check these Directories: