Building A Wheel Arch Storage Box

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This blog is the first of a 2 part sub-series on building a side console with storage and a fold-down table for the van. Whilst I could build one big which spans from the ceiling to the floor, as many van conversions have, I would lose some of the width of my bed, and having worked so hard building it to the entire width of the van, that’s the last thing I want to do.

So in this blog, I’m building a wheel arch storage box which the bed can pull over and rest on, and later I’ll be building an upper section which sits above the chest, leaving a gap for my bed in the middle.

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Hopefully it will all become clear as I go, so without further ado this is how I did it.

Designing the storage box

I started by making a rough design of how I wanted the chest to look on SketchUp. It was my first time using the software, but I found it quite easy to use.

SketchUp design of wheel arch storage box from the front
SketchUp design of wheel arch storage box from the front

My reasons for creating a wheel arch box are that;

  • It creates more vital storage in a largely unused area of the van
  • It creates another point of support for the bed when it is fully extended
  • It covers up some of my questionable carpeting over the wheel arch
  • And it doubles up as a foot rest when we’re sat in the van

Creating an upward-lifting lid on it would mean it is accessible even if the floor van is full and putting a wooden base in the bottom of the box increases its rigidity, as there won’t be a back to the box.

SketchUp design of wheel arch storage box from the front with the lid open
SketchUp design of wheel arch storage box from the front with the lid open

Marking out the van

My first stage was to work out the depth of the side pieces. I wanted to fit my water bottle and, temporarily, my portable power pack, whilst continuing to allow room for my surfboard to fit down the centre of the van.

Working out dimensions and spacing for the wheel arch storage box
Working out dimensions and spacing for the wheel arch storage box

I spent a lot of time measuring out the box’s area, and then masking taped its shape onto the floor of the van so that I had a visual reference.

A masking tape perimeter to work out the footprint of the storage box
A masking tape perimeter to work out the footprint of the storage box

I would be building the box out of lengths of pineboard, which I could source cheaply and came in a number of useful sizes, meaning less cutting for me. I measured out the side pieces and realised I would need to scribe out the back edge near the side door.

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Making templates for the box

I created a cardboard template for this and cut it out with a jigsaw at a later date.

A template for notches on the side of the wheel arch storage box
A template for notches on the side of the wheel arch storage box

I could then measure out the lid, the front and the base from the other pieces of wood and roughly cut the sections so that they were easier to transport.

Rough cutting the pine furniture board wood
Rough cutting the pine furniture board wood

Building the box frame

In the workshop, I began work on the box by cutting the side and front pieces to size, using a mixture of the table and circular saw. I needed to get all 3 pieces to the same height so the lid would sit flat, which was trickier than it sounds as the floor was at different levels in places.

Cutting the wood to size on the table saw
Cutting the wood to size on the table saw

With the pieces cut, I used pocket holes to attach the cut pieces together. It was the first time I had used a pocket hole jig but, as everyone else says, it really is a quick and easy way to build furniture.

Adding pocket holes to the side pieces of the van storage box
Adding pocket holes to the side pieces of the van storage box

I then used some corner clamps to get my alignment right when screwing the boards together and managed to get the box nice and square.

Screwing the side pieces to the front piece with pocket holes
Screwing the side pieces to the front piece with pocket holes
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After this was assembled, I began work on the lid. I cut it to size on the table saw and then cut the lid in 2, as per my original SketchUp design. This design allowed me to fit a hinge, as I didn’t have a back to the box.

Once both lid pieces were cut to width, I cut out some material from the underside of the narrower piece using a planer and sander so that it would sit nicely over the wheel arch.

Sanding a dip into the underside of the box lid
Sanding a dip into the underside of the box lid

I could then cut out a couple of areas which needed to be removed so that the lid would sit flush with the wall of the van. Unfortunately I cut out a small area which wasn’t necessary in the end, but it isn’t too noticeable.

Cutting notches into the box lid

I attached the narrow lid piece with pocket holes and could check the fit, which was nice and tight in the van. You’ll notice that the box is a little smaller than the masking tape outline on the floor, as I hadn’t taken into account the leg of the bed so had to do a last minute fix.

Checking the fit of the box in the van
Checking the fit of the box in the van

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Making and attaching the base

The final piece to cut was the base and, as mentioned before, this was more about adding strength and rigidity to the box. I measured and scribed where the wheel arch needed to fit and cut the wood to size on the table saw and jigsaw, then attached it from the underside using pocket holes.

Marking where to cut the base so it fits around the wheel arch of the van
Marking where to cut the base so it fits around the wheel arch of the van
Screwing the base into the storage box with pocket holes
Screwing the base into the storage box with pocket holes

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Making and attaching the box lid

I then placed it in the van and was really pleased with the fit. I did some preliminary sanding to the box before I attached the hinge and the front section of the lid, as there would be some areas that would become difficult to sand once these were attached.

Checking the fit of the box in the van
Checking the fit of the box in the van

I used a 900mm piano hinge which looks really smart on the box.

Screwing the continuous piano hinge onto the lid of the box
Screwing the continuous piano hinge onto the lid of the box

Final assembly, sanding and varnishing

I then took some time to disassemble parts of the box and glue the joints which should hopefully aid the strength of the pocket holes.

Gluing the storage box's joints together
Gluing the storage box’s joints together
Sanding the wooden wheel arch storage box
Sanding the wooden wheel arch storage box
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I did a final sand on the box and could then think about varnishing it. I used a matt-finish polyurethane varnish, and thinned the first coat with white spirit, as per the instructions on the tin. I work my way round the box and then let it dry overnight.

Applying polyurethane varnish to the storage chest
Applying polyurethane varnish to the storage chest

I lightly sanded the box before applying the second coat, because the wood grain had become raised in some areas. The second coat took really well and having sanded it again I applied a third and final coat and it gave a lovely finish.

Sanding the varnished box in between coats
Sanding the varnished box in between coats

Attaching the storage box in the van

I could now install the box in the van and, as I had done with the bed, I used turnbuckles for a non-destructive, easily-removable installation.

I drilled in metal eye screws to both sides of the box and was able to utilise load rings built into the van to tension the box in place. The left side was simple, as I had access to the load ring from within the box, however for the right side the load ring sat outside of the box, so I pulled up part of the floor – which is also easily-removeable – and threaded some cord with looped ends through, under the floor, into the box.

Turnbuckles holding the van furniture in place
Turnbuckles holding the van furniture in place

This method has worked perfectly, and the box is very securely attached and hasn’t required any drilling into the van walls or the wheel arch.

To finish the box off, I installed 2 very strong magnet catches to each end of the lid and these stop the lid from rattling whilst driving. Finally, I installed a soft-close attachment to the lid so that the lid won’t slam and bang.

Magnets to hold the box lid down
Magnets to hold the box lid down
Soft-close hinge adaptor from B&Q installed on the box
Soft-close hinge adaptor from B&Q installed on the box

Building this box was a really fun project, and I’m very happy with the result. It’s going to be so handy having this extra storage for trips away, as well as the additional support for the bed.

The box installed in the van, with my portable battery pack next to it
The box installed in the van, with my portable battery pack next to it

Thanks so much for watching, and please do subscribe to my YouTube channel to keep up to date with the rest of my van build series!

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