The primary issues with CNC machining are often cracking and deformation. There are two often occurring forms of cracking: one occurs directly during CNC machining, while the other occurs covertly and is typically brought on by internal tension.
Nonetheless, using quality materials for POM Machining could significantly help reduce the tendency for these challenges to occur. This is why it is often advisable to use modified POM materials for machining and conduct trial manufacture before the actual machining process to ascertain the level of material purity before committing to CNC machining.