One last fiddle..
It was some time sgo that we made the cooker fiddles and we always knew that fitting would be another 5 minute boat job, or about 4 boat hours all going well. Drilling the top mounting holes in sheet steel without being able to run any cooling fluid was a nightmare as the cooker cradle heat hardened and all of our HSS CNC bits found it hard going. Then the need to drill at a lower level necessitated the removal of the cooker hobs, microwave and gimballed cradle. We are now trialling cobalt tip drills.