Take a poly box of appropriete size and put in a heat mat to cover the base of it.Insrt a couple of poles into the box at about a third of the way up and then place a box on these poles.Fill the box to about two thirds with sphagnum moss or vermiculite(dampened) and put a thermometer in the box.Now all you need to do is adjust the stat untill you have the required temps.
Here are some pics of how i did ours
This is the outside of the box
This is the inside veiw with boxes
This is the base view with the poles and heatmat
I hope this helps for now.I have found that incubators can be expensive and hard to come by so i made 2 of these but will be getting a converted bottle fridge this year.
The whole thing is able to say at one temp mate.I think i hade a 0.2 gdegree variation from the bottom to the top.It has 2 heatmats on the base itself and then 2 36x11 heatmats on the sides.I have one pulse stat for 2 heatmats so one to control the bottom half and one to control the top half.The is no ventilation in there apart from where the cables come through and no fan in it as heat mats just cut out when not needed.The air get replaced every couple of days when i open it to check the humidity of the tubs.
I've sen a few converted fridges that have been heated with a single tubular heater that gets up to the required temps, but also leaves some variation from top to bottom... Your method with multiple mats and stats seems to be a much better idea. Thanks again 8)
You'd be surprised, womas can be some tough sob's but even a single drop of moisture can kill an almost full term egg :?
Kings should be a bit easier to incubate though as they're bred quite frequently. With vermiculite it may be easier to keep the eggs stable and monitor the humidity. It's what most people use anyways 8)
Cheers mate... ill probably buy both so if there are any major problems I can carefully switch over.. going to be so hard not touching them or checking them all the time... I will just want them to hatch :lol: :lol: