I loved Hana's design. it's very elegant. Unfortunately Czech spice jars are much bigger than the ones we use in Australia.
Being smaller jars, I don't think we need the middle support and I reckon we could get away with 6mm dowels. Using a single dowel size is easier to shop for and reduce waste.
I bought 1* 8mm x 2.4m & 1* 6mm x 2.4m dowels, cut them into 400mm pieces to create 3 racks.
They hold 9 jars with room leftover. The bracket will take up to 10mm of dowel. So for a perfectly snug fit you would want to cut your dowels at 380mm
After mounting my first design, I thought I'd make a couple of improvements and share them to the community.
These have not been printed, and at this stage I don't think I need another rack.
I would suggest printing the 6mm version, let me know how it goes. If you don't want to be a guinea pig then choose the ‘printed’ version
This was made in onshape if you want to edit it.
The author remixed this model.
replicated design from scratch in onshape and altered dimensions to suit 40mm jars
added versions to use only 6mm dowels