82 Review and Follow-Up After the drawings and the ®nal BoM have been released for production, there is usually a quiet time for the designer, as far as this mold is concerned Hopefully, there are no problems in buying and machining If there are problems in the shop, for example errors in machining orÐheaven forbidÐerrors in the drawings, any corrective action must be approved and recorded by the designer or his delegate There is always the possibility that the same mold will be required again maybe in a year, or much later, and it would be embarrassing if the same errors would then be repeated After the mold is ®nally ready for testing, the designer must be present and see that the installation and setup procedures are in accordance with the speci®cations on the assembly drawings The designer must also approve any changes required to make the mold work as expected and record what was done to make the mold work before it is shipped A complete report, specifying the test machine, all temperatures, times, pressure settings, and plastics speci®cations should be supplied to the customer, together with the mold A good designer will then follow up the mold with the molder, especially in case the designer has not heard from the molder ®rst, to see how the mold works in production Unfortunately, frequently, a mold goes into the customer's molding shop, and if there is any problem, the shop people cannot be bothered to go back to the mold maker but make adjustments that may not have been necessary if they had followed the instructions received with the mold Any later problems experienced by the customer should also be recorded for future reference