Heart Shaped two-piece Box in Autodesk 123D: Part 2- The Box Part of Your Heart Box + Text and Color

Now the box part of your heart box (Scroll down for the part about adding Text and Color)


Above is the finished render, and then the actual 3D printout in Rainbow Ceramic!

If you missed Part 1, the making of the basic lid click here.

Stay in the same file as the first part of the tutorial, but make sure to save different versions periodically (ie heartboxexample_v1.123d, heartboxexample_v2.123d) in case you want/need to redo something later.

To keep your canvas cleaner hide the lid solid by clicking on the eye icon in the Browser (as pictured). Click the eye icon on for the Sketch with the original heart shape if you don't already have it visible.

Then right-click on the top item in the Browser and create a New Component. This will keep the new piece we're working on separate from the lid.

The Walls of the Heart Box

These are basically the steps from the last somewhat intermediate suggestion for how to create the bottom of the lid, but you can still sketch this by hand if this gets too complex sounding. Just make sure the offset of the walls of the box will be less than the original offset, if it's more (which will make the opening smaller) the lid will not fit on the box.

From the top view adjust the center shape to be larger than the current one. This shape is going to be the interior of the box. To reiterate the smaller shape (the bottom of the lid) will have to fit within the larger opening when made.

One really important thing to keep in mind is to have the new (second biggest) heart at least 2mm away from the edge of the biggest heart shape. This will be the thickness of your heart box. I chose to have it 2.4mm in thickness so that it's more durable.

After offsetting each side of the heart sketch you'll need to connect the two offset sides. Go to Sketch>Spline and connect the two sides of the heart as pictured. You can get rid of any extra lines by going to Sketch>Trim, then clicking on the excess lines.

Now delete the inner heart since we were just using it for reference to make sure it would fit. Left-click to select it, right-click to show the options, choose Delete.

Make sure you save as a new version of this file before you delete this, you may want to go back to a previous version and use this sketch line later on.


 Select the shape that will be the walls of the heart box. Hold down Shift to select more areas if the shape is segmented. The Extrude option will appear in the pill-shaped menu, or you can go to the top toolbar and go to Create>Extrude.



With precise input on I just put the height I wanted in the input box. I chose to extrude this box 30mm, which is 3cm and about the same measurement as the width.

Once extruded make sure to Fillet the two edges pictured below 1mm to match the lid (which had the matching areas Fillet 1mm). You can go to Create>Fillet to do this, then hold down Shift to select both lines.

Boxes Need Bottoms

Go back to the sketch where you extruded the walls. Now click the inner heart and go to Create>Extrude. Again 2mm is sufficient since I'm using rainbow ceramic, but a little thicker means more durability added. I've Extruded the bottom 2.5mm high.

To make sure that the heart box is a solid 3D printable piece. Go to Create>Combine. If when you hover over the piece both the sides and bottom of the box are highlighted then they are one piece (which is good).

At some point also do this for the lid by turning the box part invisible in the Browser and making the lid visible.


More rounded edges! Again, this is optional, but I do like to play it safe especially if this is a gift and I don't have time to prototype. I even rounded the edges on the inside of the box. I rounded all these out 0.5mm.

Go to Create>Fillet and choose the edges you want to smooth out. Again, hold shift to select multiple edges at once.

Ready for color!

If you're going to add extruded letters or shapes to the box or lid wait to add color or else color changes may be made null when adding new geometry.

Left-click on a portion of the box and choose Material.

A color wheel will appear. The outer color circle is for the general color, the inner triangle is to choose how bright or dark you want the color. Keep an eye out for the tricky part where the manipulator thinks maybe you want the whole piece one color. It may be good to color the entire thing once just to make sure there aren't any areas without color, they'll be plain off-white when print if there is no color information.

Play around with the colors and press Enter when you're done. Don't worry, you can go back. If you have an existing color you want to copy use the dropper tool to first click on the area you want to color, then click on the color of the area that you want to copy.

Don't forget about the lid of the box. Do the same to it, you can have both solids visible in the Browser menu to the left as you do this so that you can manipulate both parts of the box at the same time and make the colors match.

Since we created both parts from the same Sketch both parts of the box are intersecting each other. In the toolbar go to Press/Pull>Move/Rotate/Scale and select either part of the box. Then move that part away from the other using the manipulation arrows so you can see both parts at once.


Printable in color!

If you don't want to add initials/shapes to the top of the box then you can go start the process to get it print it out now. Turn on the solid that you want to export and turn off any other solids. In other words make the lid invisible when you export the box, and then make the box invisible when you export the lid. You will need two separate files since this is a two part box.

Click the 123D icon in the upper left-hand corner and choose Save As. Save it as a WRL file (unless you want it in a material other than Rainbow Ceramic, in which case save it as an STL).

Log into your Ponoko account and go to My Designs then click on "Add a new design." For the first half of your box click Add Design, make sure the units are set to millimeters and click on "Add this design." Once that starts to process click the newly appeared button directly under that says "Select a design" then add the second half of your box. Now you're ready to begin your order!


Adding Text / Even More Customized

Look at the lid from the Top view.

From the toolbar go to Sketch>Text

Choose where the upper right hand of the text will go, and note that the top of the lid should be highlighted to make sure the Text is being created ON the lid.