I need to change only one font icon -the cart icon. I tried a few guides: https://www.classyllama.com/blog/icon-fonts-magento-2-foundation http://rossmchugh.com/extending-magento2s-icon-font-system/ http://zanetabaran.com/magento-2-icons-custom-fonts/
but while these are working fine, my problem is that I need to replace all the 34 font icons of the frontend, because it replaces the default font-icon font. What I need is to expand the default so I can replace one or two only. any help, please?