This simple pencil pot can be customized by printing custom inserts that go into the 4 sides of the pot, I have included a few different basic designs in the raw files section (most can be seen in the images) as well as a blank insert so you can customize your own inserts.
The Pencil Pot does not require supports and was designed specifically to avoid using them.
Each side of the Pencil Pot has a cavity with two slots left and right to hold a customizable insert, the inserts are printed face up and only require a single colour change, they do not require an AMS.
The insert backs are 0.6mm thick (3 layers at 0.2mm) and the image on them is 0.4mm (2 layers at 0.2mm) which is usually enough layers for most filaments to show the true colour, more transparent filaments may need more layers, the insert parts are separate objects in bambu-studio so you can make the image on them slightly thicker if you need to.
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To get your inserts into the cavity you should put the right side of the insert into the slot on the right completely, then using your thumb nails pull the left side of the insert bending it out slightly until it pops into place.
To remove an insert you can squeeze a thin bladed knife under the top edge of the insert and bend it out slightly until there is room to get a grip on it with your fingers, then you should be able to just pop it out by quickly pulling on it.
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You should print the main Pencil Pot first
Then you should print TestInsertPrint.stl and test fit it into one of the cavities on the pot.
Ideally you want the test insert to look like the second image, as flat as possible against the back of the cavity.
If your test print bulges out slightly (like the first image) you should scale it down slightly (0.5mm) on the x axis and print again, if your test print feels to loose or falls out easily then you should scale it up slightly.
When you think the test fits well you can copy that x axis scaling to your final inserts x axis scale. Do not adjust the scale the Z axis.
Inserts will be more difficult to get in to the slots the tighter they are, you can add some glue to fix them permanently but I don't feel like that is necessary even if they are a little loose.
All additional files are in the raw files section and I will add any additional inserts I make to them.