- Most graphite is synthetic, for example, graphite electrodes, graphite fiber, graphite shapes ( machined or unmachined ), and graphite powder.
- The single-piece frame / receiver is molded from ABS plastic and largely unmachined with the exception of the bolt guides which the bottom of the bolt rides on.
- The correct solution is to define the'as is'surface as a reference plane, and then define the machined plane relative to that using the appropriate tolerance form and value, depending on what you need from the machined surface . http : / / www . gdandtbasics . com / parallelism / would be a place to start, but you could just apply a flatness tolerance to the entire contiguous surface, ie bothte machined and unmachined parts . talk ) 07 : 16, 21 June 2016 ( UTC)