Do any Milliners out there know if it is common practice to use stiffener on Panama Straw. I am making a 4" brim Fedora style. I am worried it will ruin/dry out the straw. On the other hand is steam and stretch enough for the straw to keep its shape ??
Yes, you should use stiffener if it is a real Panama straw. Use a good white PVA diluted as you would for stiffening flowers. This should be done before blocking and you need to make absolutely sure you do not get too much in one area over the other. A really good quality sponge is what is best but not a household sponge.