Yet another dice holder and tray! After I removed the wording on ScubaChimp's Dice tray, I realized that I couldn't print it on my 200x200 bed. So I made my own.
This holds ~5 dice in each slot. D20's & 12's are pretty big and seem to range in size (in my collection at least). Note that there are only 5 slots, I never use the percentile dice in my games so it got the boot to make room for the mini holder slot and a couple of D20 holes.
There is Z space for you to add some felt/leather etc. to the base of the tray and the dice slots if you so desire.
There are holes for magnets on the corners of the top and bottom pieces of the holder. I use these magnets: https://www.amazon.com/gp/product/B07BHHNBWQ/
The holes are set up to handle two of these stacked and glued in. I like to use this set: https://www.amazon.com/gp/product/B0166FFCHS as the accelerator sets super quickly.
Pro tip: I like to mark one of the faces of the magnets with a sharpie to make sure you end up gluing the correct side up.
I printed mine with 20% infill at .2mm with a print temp of 210 and a flow rate of 110% with this wood filament: https://www.amazon.com/gp/product/B06Y47VXY2 No need for supports, print all pieces with the "holes" facing up.
With my slicer at least, the tray wouldn't print with a skirt as it is 197mm. So you may have to remove your skirt (giggity) to print on a 200x200 bed.
Note: I increased the temperature and flow rate to deal with this filament which has the tendency to jam. You'll note that the rolling tray randomly stopped half way through because of one of these jams.
20 (doesn't have to be, but gives it a better feel IMO)