Now in mm and inches , use only the unit slides you need

I Have now rebuilt this model as close as i can in openscad so it can be fully customizable 

I originally made this as an acrylic marker holder because I got fed up rebuilding the same model every time I bought different pens. It started in Tinkercad, then Fusion 360, and eventually I rebuilt it in OpenSCAD so I could change everything in seconds instead of starting from scratch.

The more I worked on it, the more I realised it could organise far more than just pens. Now you can customise it to suit all sorts of tools, bottles and hobby supplies.

If you find a use for it that I haven't thought of yet, I'd love to see it.

Perfect for pens, markers, sockets, bottles, hobby tools and anything else that fits.

Features-

Adjust hole size.

Adjust hole depth.

Change wall thickness.

Set the number of rows and columns.

Adjustable stepped tiers.

Solid floor thickness.

Optional front and rear stabilisers.

Optional rounded outer corners.

Optional hole entry bevels.

Built-in safety limits to help prevent broken models.

Hole Shapes-

Circle

Square

Rounded Square

Rectangle

Rounded Rectangle

Oval

Triangle

Rounded Triangle

Pentagon

Rounded Pentagon

Hexagon

Rounded Hexagon

Octagon

Rounded Octagon

Great for-

Pens and pencils

Acrylic markers

Paint brushes

Nail polish bottles

Makeup brushes

Lipsticks

Essential oil bottles

Paint pots

Drill bits

Router bits

Allen keys

Sockets

Nut drivers

Precision screwdrivers

Tweezers

Craft knives

Needle files

Soldering tools

Crochet hooks

Knitting needles

Leather tools

Jewellery tools

Test tubes

Small bottles

Glue sticks

AA, AAA, C and D batteries

Magnets

Dowel pins

Brass rods

Carbon fibre tubes

Resin mixing sticks

PCB components

Model making tools

Engraving bits

3D printer nozzles

Small parts trays

Desk organisers

One generator. Hundreds of possible organisers. Simply choose your hole shape, size, depth and layout to create a holder that fits your needs.

Bambu Studio Customizer Guide (For Beginners)

You don’t need any coding skills to customize this marker holder! Bambu Studio has a built-in "Customizer" panel that lets you change the model using simple sliders. Follow these basic steps to make it perfectly fit your markers.

How to Customize and Print

Step 1: Open the Settings Panel

Open your model file inside Bambu Studio.

Look for the Parametric / Customizer panel on your screen (usually a sidebar with a list of settings).

Step 2: Use the Sliders to Adjust

Change the dimensions by moving the sliders or typing in your numbers:

Hole Diameter: Measure your marker’s/Objects thickness and depth you need with a ruler, then set this slider to be 1mm larger so the objects slide in and out easily. For a nice tight grip i suggest 0.4mm extra space.

Wall Thickness: Controls the spacing between holes. It is safely locked so you can't accidentally go under 3.5mm, keeping your print strong!

Rows & Columns: Choose how many total markers your grid will hold (e.g., 3 rows by 12 columns).

Stabilizers (Feet): Turn this setting "On" if you want flared feet on the bottom so your tall marker stand won't tip over on your desk/bench.

Step 3: Let it Load

Whenever you change a slider, your computer will take a few moments to recalculate the 3D model. If your screen looks like it freezes, don't worry! It is just drawing the smooth, rounded corners for you.

Step 4: Slice and Print!

Once your adjustments look perfect on screen, click the Slice Plate button in the top right corner of Bambu Studio.

Click Print.

Note: This model is cleverly shaped to support itself, so you can leave Supports turned OFF to save plastic!