Creating a C&C (Cubes and Coroplast) cage for your guinea pigs is a straightforward DIY project that involves assembling grids and connectors and measuring and cutting coroplast for the base.
While the basic framework for this homemade cage is relatively simple to construct, you may also consider adding more advanced elements, such as a loft, ramp, lid, or stand, to enhance the functionality and comfort of the cage. The modular construction of the cage allows for easy extensions or the addition of design features at a later stage if required.
This DIY guide will provide a step-by-step approach on how to build the basic cage and these additions, ensuring you create a safe, comfortable, and spacious environment for your guinea pigs.
To complement our written guide, we also have videos in the sections below that provide visual guidance to assist you in constructing your C&C cage.
If you’re new to C&C cages and want to learn more, please see our article on the best guinea pig cages, where we explain the features of this modular enclosure.
- C&C cage sizes and dimensions
- Components needed to build a cage and/or extensions
- How to make a basic C&C cage for guinea pigs
- How to make a C&C cage with a lid
- How to make a C&C cage with a loft and ramp
- How to make a C&C cage with a stand and storage
Understanding C&C cage sizes
When referring to the size of C&C cages, it’s important to note that we typically use the number of grids to describe dimensions, not feet, inches, or centimetres. For example, a “2×4” C&C cage means the structure is two grids wide by four grids long. This standard grid-based measurement system helps ensure clarity and consistency in discussing and planning C&C cage sizes.
C&C cage dimensions
These measurements represent the interior space your guinea pigs have within the cage.
| C&C (grids) | Cm | Feet / In | Sq M | Sq Ft |
|---|---|---|---|---|
| 2×4 | 68 x 142 | 2ft 3” x 4ft 8” | 1 | 10.4 |
| 2×5 | 68 x 178 | 2ft 3” x 5ft 10” | 1.2 | 13 |
| 2×6 | 68 x 215 | 2ft 3” x 7ft 1” | 1.5 | 15.7 |
Please note: I’ve excluded the 2×3 C&C cage as it offers less space than recommended for your pets.
For more information on suitable cage sizes for guinea pigs, please see our page on housing requirements.
Components needed to make a C&C cage & extensions
To build or extend a C&C cage for your guinea pigs, you’ll need the following materials and tools:
- C&C Grids:Use 9×9 square panels, each approximately 35.5cm (14 inches) in size, with gaps of 3.5cm (1.4 inches) or smaller.
- Connectors: These are essential for joining the grids together. The grids simply click into the connectors, making assembly straightforward.
- Coroplast Sheet: Also known as correx, this sturdy plastic sheeting forms the base of your cage. The size depends on your cage dimensions; the recommended thickness is 4mm. Alternatively you can buy a readymade coroplast box (see individual projects for details).
- Stanley Knife or Strong Scissors: For cutting the coroplast to the required size.
- Roll of Packing Tape: To make the coroplast box.
- Measuring Tape: For measuring the coroplast to ensure accurate sizing.
- Cable Ties: Handy for adding extra stability to the grids.
- Marker Pen: To mark cutting lines on the coroplast.
- Long Ruler or Straight Edge: To assist with cutting straight lines on the coroplast.
Further information on the components required for each project can be found in the relevant sections below.
How to build the basic C&C cage
Making a basic C&C cage for your guinea pigs is quite simple. We’ve provided step-by-step instructions and a video demonstration to assist you. Whether you prefer reading or watching, these resources will guide you through each stage of the construction.
Materials required for basic C&C cage
Here is a shopping list of what to buy for each cage size. Opting for sets of grids and connectors is generally more cost-effective than purchasing individual items. Remember that buying in sets might result in a few extra grids, which can be handy for future cage expansions or replacements. I’ve put in brackets the actual number you will use for the project.
The links provided will direct you to the specific cube sets and connector packs (of 4) needed, simplifying your shopping process.
Please note: Check the size of coroplast required, as you may need to buy more than one sheet and join together using tape.
2×4 C&C cage
- 1 set of 4 cubes (12 grids)
- 1 extra pack of connectors (24 connectors)
- Coroplast: 98cm x 172cm (or you can buy a readymade coroplast box)
- Roll of packing tape
2×5 C&C cage
- 1 set of 4 cubes (14 grids)
- 2 extra packs of connectors (28 connectors)
- Coroplast: 98cm x 208cm or you can buy a readymade coroplast box)
- Roll of packing tape
2×6 C&C cage
- 1 set of 4 cubes (16 grids)
- 3 extra packs of connectors (32 connectors)
- Coroplast: 98cm x 245cm or you can buy a readymade coroplast box)
- Roll of packing tape
Step 1: Assemble the grids
Connect your grid panels to the desired shape and size using the top and bottom connectors.
Step 2: Prepare the coroplast
Before you start: If one sheet of coroplast isn’t big enough for the desired size, you may need to start by joining two or more sheets together by using clear packing tape.
Using the measurements provided, use a marker pen to mark out the required size. If you are making a different size than those included here, calculate the size of coroplast needed by measuring the interior of the cage, then add 30cm to the width and length to allow for the sides.
Using a stanley knife or sharp scissors, cut the coroplast to size.
Step 3: How to make a coroplast box
Using a marker pen, draw a line 15cm from the edge on each side of the coroplast.
Then, lightly score these lines with a stanley knife or the edge of the scissor blades, as shown below by the dotted lines, avoiding cutting right through.
On two opposite sides, cut along the vertical lines you’ve marked and scored (as illustrated below). This allows you to fold the sides up to form a box.
Use clear packing tape to secure the flaps behind the sides. Place the tape on the outside to prevent your guinea pigs from chewing on it. In the image below, I’ve used brown tape so you can see exactly how it’s done.
Once you’ve created all the corners and completed the coroplast box, you can place it inside the cage. You’ve now successfully built the cage and are ready to add bedding and accessories for your guinea pigs.
How to make a hinged lid for a C&C cage
A C&C cage for guinea pigs is typically open-topped, but if you have other pets or very young children, adding a roof is crucial for the safety of your guinea pigs. Remember that the security provided by the lid depends on the type of other pets you have.
Materials required for a complete C&C cage with a hinged lid
2×4 C&C cage with lid
- 2 sets of 4 cubes (24 grids, 27 connectors)
- Coroplast: 98cm x 172cm (or you can buy a readymade coroplast box)
- Pack of cable ties
- Roll of packing tape
- Support bar (optional)
2×5 C&C cage with lid
- 2 sets of 4 cubes (29 grids, 32 connectors)
- Coroplast: 98cm x 208cm (or you can buy a readymade coroplast box)
- Pack of cable ties
- Roll of packing tape
- Support bar (optional)
2×6 C&C cage with lid
- 1 set of 4 cubes and 1 set of 6 cubes (34 grids, 37 connectors)
- Coroplast: 98cm x 245cm (or you can buy a readymade coroplast box)
- Pack of cable ties
- Roll of packing tape
- Support bar (optional)
Materials needed if adding a lid to an existing cage
If you have already built your cage, you will need these additional items to make the roof
2×4 or 2×5 C&C cage lid
- 1 set of 4 cubes (12 grids, 3 connectors for 2×4 / 15 grids, 4 connectors for 2×5)
- Pack of cable ties
- Support bar (optional).
2×6 C&C cage lid
- 1 set of 4 cubes and 1 set of 6 cubes (18 grids, 5 connectors)
- Pack of cable ties
- Support bar (optional)
Step 1: Build the basic cage
If you are building from scratch, follow my instructions on how to make a basic C&C cage, as described earlier.
Step 2: Make the opening part of the lid
To make the lid, I recommend watching the video tutorial I’ve created on this topic for a clearer understanding of how to do it.
First, lay out a row of 4 grids. Secure the grids together at the top and bottom corners using cable ties.
Now, repeat the process with a second row of four grids.
Overlap the two rows of grids by four squares. Use cable ties to fix them together firmly. Then, cut off the long ends of the cable ties.
Step 3: Assemble the fixed part of the lid
Using the remaining grids, attach them to the top of one side of the cage, slotting them into the existing connectors. Add extra connectors to join the grids and secure with cable ties.
Optional: For added stability, you can place a support bar over the back and front of the cage in the centre of the structure.
Step 4: Attach the lid
Place the opening part of the lid flat over the cage, ensuring it overlaps the fixed part by four squares.
Create the hinge by securing the joint between the roof and the main structure with cable ties at the two side corners.
Add additional ties along this join (about 3 per grid) to form a hinge. Snip off any excess lengths from the cable ties.
How to make a loft and ramp for a C&C cage
A loft in a C&C cage can provide a cosy, separate space for guinea pigs to relax. However, remember that not all guinea pigs, especially those with mobility issues, can use a ramp. Ensure the ramp has a gentle incline and ample traction, as guinea pigs naturally prefer flat environments.
Materials needed for a complete C&C cage with loft & ramp:
Please note that in addition to the following materials, you will also need pliers to cut through some of the grids and a file to remove the sharp edges.
2×4 C&C cage with loft
- 2 sets of 4 cubes (25 grids)
- Coroplast: 98cm x 172cm (base), 98cm x 65cm (loft), 83cm x 20cm (ramp) OR buy the readymade base, loft and ramp
- Pack of cable ties
- Roll of packing tape
2×5 C&C cage with loft
- 2 sets of 4 cubes (27 grids, 37 connectors)
- Coroplast: 98cm x 208cm (base), 98cm x 65cm (loft), 83cm x 20cm (ramp) OR buy the readymade base, loft and ramp
- Pack of cable ties
- Roll of packing tape
2×6 C&C cage with loft
- 1 set of 6 cubes and 1 set of 4 cubes (29 grids, 41 connectors)
- Coroplast: 98cm x 245cm (base), 98cm x 65cm (loft), 83cm x 20cm (ramp) OR buy the readymade base, loft and ramp
- Pack of cable ties
- Roll of packing tape
Materials needed if adding a loft & ramp to a cage
If you have already built your cage, you will need these extra items for the loft and ramp:
Loft and ramp for all C&C cage sizes
- 1 set of 4 cubes (13 grids, 9 connectors)
- Coroplast: 98cm x 65cm (loft), 83cm x 20cm (ramp) OR buy a readymade coroplast box in sizes 2×4, 2×5 or 2×6
- Pack of cable ties
- Roll of packing tape
Step 1: Build the basic cage
Firstly, construct the basic cage as described previously.
Step 2: Connect the loft grids
You will need to construct the loft at either the far right or left end of your cage based on your preference and what best fits the layout of your space. Please note that it is much more straightforward to understand this process if you watch my video on how to make the loft and ramp.
On your existing cage, at one end of the top, turn around three connectors (the centre connector between the two end grids and the first side connectors on the front and back) so the bottom of the connector faces inward.
Fix two grids to this end, forming the base of your loft.
Attach four grids to make the back and sides of the loft, adding connectors at the top. Use cable ties at the corners and above the connectors for extra stability. Secure the front grid and connector in place. Then stabilise the loft base with cable ties.
Step 3: Make the loft entrance
Select one corner of the final grid to create an opening for the ramp. Measure and cut out a 4×4 square section (four squares from the corner on two adjoining sides). Use pliers, but be careful not to cut the grid’s border. File down any sharp edges for safety.
Once done, secure this grid in place, positioning the opening at the bottom and towards the back of the cage.
Step 4: Make a coroplast box for the loft
Measure and cut a piece of coroplast to 98cm x 65cm. Follow the instructions in the previous section, “Building a C&C cage”, which explains how to make a coroplast box. Then, place your completed box in the loft space.
Mark the area on the coroplast that aligns with the loft opening. Cut the sides and top, leaving a flap that can tuck under the ramp.
Step 5: Make the ramp framework
Creating a ramp for your C&C cage provides your guinea pigs access to the loft. Follow these steps to construct a safe, sturdy, and guinea pig-friendly ramp with sides that complements your cage design.
Take three grids. You’ll notice that each has a small opening on one side. You will need to bend these grids to create the ramp, but avoid bending the side with the opening; keep it to the left or right.
Place a grid over an armchair, a piece of wood, or a similar object. Bend the grid three squares from each side to form a curved shape. Repeat this with the other two grids.
Position the bent grids together to form a ramp, overlapping each by three squares. Then tie the grids at various points to create a sturdy framework, and snip off the long ends of the cable ties.
Secure the ramp to the loft’s opening using cable ties, ensuring you have tucked the coroplast flap under the ramp.
Step 6: Make a coroplast insert for the ramp
Measure and cut a coroplast piece to 83cm x 20cm. Mark 5cm in from each long edge, score with a craft knife, then turn the coroplast over and bend along these lines. Make sure it fits on the ramp frame.
Make two small holes in the centre of the ramp insert, about 0.5cm from the top (a hole punch works well). Secure the coroplast to the ramp with cable ties through these holes.
Cover the ramp using a material such as a folded towel for traction. Ensure it tucks under the loft’s bedding to stay in place. You can also cover it with fleece if you like.
Step 7: Add grids for safety
For added safety, attach two more grids to the back of the cage behind the ramp. To do this, you’ll need to turn the first two connectors at the top, near the loft. Secure the grids to the main framework, adding extra connectors at the top.
How to make a stand and storage for a C&C cage
Having a stand for your C&C cage brings multiple advantages. Elevating the cage off the floor makes your guinea pigs feel safer. The raised level will also make it easier for you to interact with them at a more comfortable height. This elevation also simplifies cleaning tasks, allowing you to reach and maintain the cage with less strain. Additionally, the space beneath the cage becomes a convenient area for storing all your guinea pig accessories efficiently using the available space. If you want the cage to look really neat and tidy underneath, you can buy storage boxes for all the accessories.
Materials needed for complete C&C cage with stand & storage
2×4 C&C cage with stand
- 1 set of 6 cubes, 1 set of 4 cubes (34 grids, 37 connectors)
- Pack of cable ties
2×5 C&C cage with stand
- 2 sets of 6 cubes (41 grids, 44 connectors)
- Pack of cable ties
2×6 C&C cage with stand
- 3 sets of 4 cubes (48 grids, 51 connectors)
- Pack of cable ties
Materials needed if adding a stand & storage to a cage
If you have already built the cage, you will need these additional items for the stand and storage:
2×4 C&C cage stand
- 1 set of 6 cubes (22 grids, 13 connectors)
- Pack of cable ties
2×5 and 2×6 C&C cage stand
- 2 sets of 4 cubes (27 grids, 16 connectors for 2×5 / 32 grids, 19 connectors for 2×6)
- Pack of cable ties
Step 1: Assemble the basic cage
Firstly, construct the basic cage as described previously.
While the following instructions provide you with a guide to building a stand and storage for your guinea pig C&C cage, I highly recommend watching my instructional video on the topic. The visual demonstration in the video can be much more straightforward to follow, especially for visual learners or those new to DIY projects.
Step 2: Adjust connectors
Turn the cage onto its back. Then adjust all connectors so that the sides of the connectors, not their tops, fit into the base. This repositioning is crucial for adding more grids for the stand.
If any connections feel insecure, reinforce them with cable ties for extra stability.
Step 3: Make the cage base
Install grids underneath the coroplast to create a sturdy floor for the cage, using additional connectors in the middle.
Apply cable ties to the middle of this base for enhanced stability. This step is crucial to ensure a safe and sturdy structure.
Step 4: Build the stand
Attach a single row of grids to form the back of the stand and secure them with connectors. Then, connect two grids on each side of the base to create the sides of the stand.
Add grids vertically across the central part of the base to create separate compartments.
Ensure every grid join is firmly secured with connectors.
Adjust the connectors that will act as the feet so their flat sides will touch the ground.
Add cable ties wherever necessary to stabilise the structure further and trim any excess lengths.
Completing a C&C guinea pig cage setup
With the structure of your C&C cage now complete, there are a few more steps to ensure it’s ready for your guinea pigs.
You must add certain items to the cage to create a comfortable and enriching environment. For a detailed guide on these vital additions, read our article, “How to Set Up a Guinea Pig Cage.” This resource will provide all the necessary information to make your guinea pigs’ new home cosy and stimulating.
Further information on housing a guinea pig
For further information on guinea pig housing, please take a look at the following resources:
- Guinea Pig Housing Guide
- Best Indoor Guinea Pig Cages
- Recommended Guinea Pig Products
- Best Outdoor Guinea Pig Hutches
- How to Set Up a Guinea Pig Cage
- How to Keep Guinea Pigs Warm in Winter
- How to Keep Guinea Pigs Cool in Hot Weather
- Runs and Pens for Guinea Pigs
Written by Monique, an experienced guinea pig owner with the guinea pigs’ best interests at heart. Find out more about me here.