No, not ideas on how to airbrush.
But a question about the tip (jet?)
I have an old Sealey airbrush, it's been my faithful 'detail and thin line' painting beast since the beginning and I'm happy using it.
The trouble is...
Well, I store the tip in an old Tamiya paint jar with some thinners, and, me being a silly old bleeder who should know better and have demanded that other people in my household not touch it at all. Ever. Never Ever.
Has thrown it out

Can anyone tell me where I might get a replacement or if another manufacturer's AB tip would fit?
I can't afford to buy a new AB at the moment so I'm hoping for a cheap (and quickish) fix.
TIA from a desperate modeler
Tom