I'm new to sugar work. I've made cakes and fondant in the past but never solid cake toppers decorations. My mother in law gave me some tylopur to add to my fondant to solidify the shapes and flowers etc but I'm not sure how much to use. So how much do I need to use for 500g  or 1 kilogram of fondant? Thanks 

It's a balancing act between making it firm enough to hold its shape and dry more quickly, and having it too firm to work.

I go by feel, I add tylose or CMC until the fondant is the right consistency. I also only add the tylose/CMC to each piece of fondant as I'm working with it, eg. if I'm making a figurine, I add it to the black paste for the shoes, and then separately to the pants or flesh colour for the legs, separately to the torso coloured paste etc.

Just experiment and find what works  for you - as a guide I use about 1/4 teaspoon to 30g paste for a head - but start with a pinch and see what you can tolerate to work with.

Thanks so much. I'll be trying it out tomorrow, wish me luck.