So what is a piano technician to do when the sun is needed to bleach a set of ivory keytops and it's been cloudy and rainy for weeks?
I received a set of keys from another technician that needed a lot of ivory repair. More than I usually take on. This meant that several stains would have to be removed and the replacement ivories bleached to match the existing ivory. No sun was in sight to aid in the peroxide bleaching process.
I decided to splurge and invest in stronger peroxide (actually it was rather inexpensive) and two, four foot black lights (pricey). The UV from the lights, suspended a few inches above the keys, works like strong sunshine.
Here's the set up.And just because I invested the time and money to set this up, the sun has been out every day since!