Im at 100 toolcrafting im using master tools and master ingredients i have 108 intel (primary) and 105 fort (secondary) and i have yet to create a supreme item. I have tried the regular, artisan and master recipes for the items and i have also tried using various materials when i can like for "rock" in the chisel recipe you can sub granite, flint, quartz, obsidan etc... Also have tried grinding sometimes 35-50 of a recipe to see if i get a small success rate for it but still not one supreme item. My resources are at 98.5 if i get to 100 can i get supreme granite? Do i need more intel and fort? Is the success chance just so low i havent seen it yet like 1 in 100? Any input will be helpful.
It sounds like you are doing everything right. Make sure you have the highest qual ingredients possible. Make sure your straps are supreme, and your twine is supreme. I can only guess that your ingredients are at the low end of master. Make sure your tools are master quality. Items that use more tools will be higher quality.
I think your stats are high enough. Your skill is high enough. I think it must be ingredients that are not high enough. Also make sure you are on your tribe land for the extra stats, but I am sure you know that. Make sure you are not hungry or thirsty.
I will be online this evening, so if you want some supreme straps just come visit me. I am guessing you are very close.