Until recently I did all the cleaning and polishing of clock parts by hand! This meant every small nut, screw and wheel was held in hand and polished with fine wire brush in a Dremel miniature drill. It was tedious and painful trying to hold such small pieces. I therefore spent some time figuring out a better way to do it without damage to my ageing joints. After a few months of searching I found a company willing to let me trial a vibratory tumbler and some media. I had already discounted barrel tumblers of the type used to polish jem stones etc, as being too harsh in their action to be let loose on small and delicate Bulle and Eureka parts. But the vibratory tumbler looked a lot gentler in its action. Having spoken to the kind people at Sharmic who were helpful in discussing my needs, they suggested an Raytech AV18 tumbler and fine media such as walnut husk or crushed maize orb. After trying both I settled on Maize Orb which could be supplied in varying grades. I then needed to find a way of separating out the small parts from the maize after processing. I concluded that a fine mesh sieve with a grating of 1.18mm in combination with maize orb graded to pass through a 1.10mm sieve would be ideal, as the smallest part diameter is 1.5mm.