My dad gave me this tip over the week.
I was asking him about tring out wood for later carving and he suggest that I should but the smaller pieces I have in the Micro wave for 5secs or so each day.
It is just about enough to heat the core and helps to speed up the triing process by give the wood a quick start.
I am not sure how long it would take as the would depend on the wood and it's moisture content but it would be certainly faster the leaving in the hot press for few months or even a year.
All though on this are welcome and be safe it only need a few seconds a day and make sure there is no metal (nails etc.) in the wood.