Hormat Alan and Rick,
Good stuff. I now know I was definitely using too much warangan. I live up on the 12th floor, which is actually 13 floors above street level because my block of flats is on a slight incline. There is usually a fairly good breeze in my living room if the windows are open. I don't have a balcony or deck, so I think I'll mranggi the keris out in the corridor: since this building was built in the late '60s, there is a fair amount of indirect sunlight out there during the day and lots of airflow. The elderly gent down the hall hangs his laundry up out there and I sometimes practice my silat outside my front door when it's raining out!
I'll probably get some odd looks from the neighbours if I'm sitting out there painting warangan onto a keris, but I get those looks all the time anyway, so I'm not too bothered.
I think the process will go much better this time around. I'd like to work the file marks off using coconut husk as suggested, so I'll pick up a coconut later in the week. They are often used in religious practices in Hinduism, which is the only time we've ever used them at home...
Jai