It seems that Perspex needs 170deg.C for cast and 155degC for extruded, both of which well above boiling point so I will have to use a heat gun.
I have no idea which type of the plastic will be supplied, but fortunately, I have an R.S. supplied Steinel professional heat gun, old but in good working order so will use that.
The temperature is selectable from 50 to 650 degrees in 50 degree steps and the flow rate is fully controllable.
I will post pictures of all the results, good or bad, but no video, not possible as I don't have one.
If it's of any interest to anyone here a some pictures of the heat gun.
Mike.