Cornflour paste is acid free, and very cheap and super quick to make. Great for chine colle or sizing papers.
In a small saucepan:
1tsp cornflour to 3 desert spoons of water.
Mix well and add 3 more desert spoons of water.
Stir over heat for 2 mins til “cream” becomes a thin “custard”.
(Can be cooked in a microwave 1 min, stir every 6 secs).
Use less water for sticking down prints, more for pasting chine colle or sizing paper.
I store a batch in a small face cream pottle.
Best stored in the fridge to help it last longer. Lasts about a week.