"trevor.appleton" wrote in message
...
Can any one direct me towards some instructions for a propagation
bench.

So far I have constructed a 6' x 2' x 6" deep bench and ordered a 20
ft soil
warming cable and a rod thermostat.

I was wondering about lining the bottom with a sheet of polystyrene,
with
drainage hoiles of course.

Was then gouing to use horticultural grit. Not sure of the depth of
grit
abovre and below the cable?

Trevor

Yes line with polystyrene also line the sides. I have experimented on
this and found the heat loss through the sides to be significant..

Bell