Hello James,
the good news is we have an Ademco model 1518. Its platen size is 390mm x 450mm. It's not been used since the 90's. I switched it on a few months ago and it works. The paint is peeling and there's some handling rust on the handle. It came from a dept at Sydney uni. I'll shoot some pix of it and run a heating time/temp test and send to you

The bad news is we're in Launceston.

I'll ascertain a shipping cost to Sydney and advise you. I think the best deal would be as backloading for a Sydney removalist/carrier on a Sydney-Launceston delivery.

We also have a large box of tissues.

And, we've a 5x7 deVere enlarger with three heads.

John Chiarotto