Quote Originally Posted by wilfbiffherb View Post
i may try and heat but as im printing 16 x 16 i dont know how i would heat so large an area. or i could preheat the chemical in a pan beforehand or something, then pour it in.......hmmmm......
A couple of dish warmers wound up to full heat under the developer tray. A couple of aquarium heaters, one in each side of the tray, might work.. Another alternative would be a pig warming blanket - Not the easiest of things to google for in the UK, but one supplier is Phillips Animal Health Ltd.

If you are running to an hour to develop a single print, the developer is going to cool down pretty rapidly if you preheat in a pan.