Thank you for reaching out, this is an important issue for many Dozuki users! For those of you just tuning in, you can use an Item page to list information for a Part or a Tool on your site. The pages are identical, except that a Part is consumable during the process and a Tool lasts beyond the process. To create an Item page from scratch access your Dozuki site and click the dropdown menu by your name, then click Create a New Page. I also suggest looking into more information about item pages here.
For your specific problem, we are currently upgrading our indexing system to update in real time, but until that upgrade is active the items might take some time to be available throughout your site after creating them. We are working hard on this feature and I look forward to the next update when it becomes active!