In here the components are transferred into pots filled with either ceramic cones or walnut shell granules and tumbled until they are polished enough to see your own reflection on.
Here all details and tolerances are checked by hand on every individual part against their original spec sheet drawings.
Paul Comp. are ruthless when it comes to quality control, so if something is not right with a component it will never see the light of day – strict!
This level of control is the advantage a small independent shop like Paul Comp. has over the huge commercial bike factories who make their parts in big bulk batches.