Help - setting fondant icing quickly

[perhapstomorrow]

I've got myself in a pickle and need some help. I'm doing a cake for my son's birthday tomorrow. I've mixed some fondant icing with some tylose in order to use it for modelling. However, the bits are quite chunky and I need it to harden quickly any ideas on how to speed things along?? I've left it to the last minute and am in a bit if a panic. TIA

So your modelling and have added gum tragacanth to firm up the modelling?
If so make the desired shapes and store them carefully on a tray, baking sheet or similar. Put them to dry at room temperature uncovered but away from prying fingers or paws. With careful handling they should be dry enough to handle tomorrow. Don't put the cake or the models in Tupperware or similar as it will sweat.

@stopgo thank you. I've gone and put it in Tupperware with silica gel!! Presumably it will still sweat? Also I've got a dehydrator so could use that but I'm worried about melting it.

I've dried shaped fondant in the oven with just the light on for a smidge of heat with the door cracked open to allow air circulate.

I'd take it out of the Tupperware and just let it dry overnight b

Unless you're making some sort of Eiffel tower construction, they don't need to harden completely, just enough to hold their shape surely. It'll be grand by tomorrow.