All foundation materials are used for structural work in hat making. Some have specific use.
Plastic fantastic
Fascinator base - from sinamay
Fascinator base B grade - from sinamay AUD $9.50 12 cm / 4.8" diameter
Hat foundations:
Small 19 cm dia AUD $15.50
Medium 26cm dia AUD $16.50
Large 30cm dia AUD $17.50
20/20 (English Canvas):
20/20 is used for blocking and extensions of necks. It can also be used to make hat blocks. 20/20 is easy to shape as a foundation for fabric hats. Make your own fascinator base or make your own complete, stunning fascinator here.
Leno:
Leno is cut on the bias and is used for covering wire to have smooth edges on hats. Leno can be blocked into shapes for see-through crowns if doubled up. Leno will achieve a soft feel and look of your hat. You can use it as a foundations substitute for blocking net in straw crowns.