Inexpensive solar landscape lights are great, but they suffer from two major flaws: broken ground spikes and clouded solar panels. In this post, we’ll show you how to upgrade those cheap lights into DIY Cedar Cube Solar Landscape Lights, and we’ll show you a simple trick to clear up those hazy solar panels.
The Problem with Solar Landscape Lights with Ground Spikes
If you’ve ever bought inexpensive solar landscape lights, you’re probably familiar with their Achilles heel: the cheap plastic spike that sticks into the ground.
The photo above depicts a rare specimen whose stake has survived a whopping three years. This is akin to a 300 year-old Galapagos tortoise. The problem of premature breakage and lost spikes has plagued all but the remotest and most forgotten of our lights.
Don’t like where you put that light? Want to move it, do you? Well here’s your shaft, but the spike stays in the ground!
Not watching where you’re going? Leg brushed up against the light? That’ll be a broken spike!
Dogs got into your garden? Ran into one of the lights? You better believe that spike’s a goner!
To sum up: Lights: good. Spikes: cheap Chinese crap.
Between the Mostly Excellent Light and the Spike of Counted Sorrows lies the Shaft of Mediocrity. Meh, it doesn’t care one way or the other if it lasts three days or three years. It sits there in the ground, mostly good, but then it may decide to crack or split or calve off a rounded bit of itself like a Greenland glacier birthing icebergs in summer.
Between our squirrel-mad dogs rampaging through the landscaping and my oafish galumphing, it’s a wonder any spikes survived. However, those few unlucky survivors were quickly and efficiently dispatched during Handan’s frequent and unpredictable changes-of-heart concerning design elements and lighting placement.
A Temporary Solution to the Solar Landscape Light Spike Problem
One spring, Handan suggested I fashion new spikes from cedar to replace the lost Spikes of Inferiority. Down into my lair I went and returned with enough cedar stakes to slay several platoons of vampires. But the undead would have to wait, as these spikes were for the soil, not cold, unbeating hearts.
They worked well…for a year. But then, a few of them started to snap when we moved them. Mostly though, they remained strong and resolute – so much so that the Shafts of Mediocrity began to shatter like the adolescent delusions of Millennials entering the real world after two decades of moonbeams, snowflakes and unicorn poop.
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DIY Cedar Cube Solar Landscape Lights – The Final Solution!
After all the time and effort we put into the landscaping around the pond, we needed a solution. As always, Handan hit upon the answer while I was off chasing bugs and chuckling like a dunderhead. Her idea was to get a few cedar 4x4s and cut them into 4 inch cubes.
Let me clarify: her idea was for me to get a few cedar 4x4s and for me to cut them into 4 inch cubes.
Step 1 – Cut Cubes
Step 2 – Drill Holes
Next I needed to drill holes into the tops of the cubes into which the lights would fit. I measured the diameter of the protrusion at the bottom of one of the lights: 11/16 inch. Really? This kind of drilling is best done with Forstner bits – and I have two full sets of them, ranging from 1/4 inch up to 1 1/2 inches. But guess which size I didn’t have? That’s right! Gold star for you! I didn’t have 11/16 inch, so off to Amazon I went and ordered one. When it arrived, I got to work. I used my drill press and set up stop blocks, so I could quickly position each piece.
I set a vacuum just above the piece, since Forstner bits create whole ecosystems of wood shavings and debris. Then I drilled the cedar blocks, having set the depth of the drill press to the length of the protrusion at the base of the lights.
All cut and ready to go! Or so I thought…
Step 3 – Stain the Cedar Cubes
Handan wanted me to stain the blocks, but as I am inherently lazy, I immediately countered her request by telling her how cool and New Englandy the blocks would look after a year in the elements.
She was having none of it.
Back into the dungeon I went, can of Minwax Dark Walnut stain in hand. Sometime later, I emerged from the vapors with stained blocks. I had to admit she was right about that. [Ha! I am always right! 😉 -Handan]
I then got to work building the pillars. I made groups of four and glued them together.
Then I stained them in the same manner as the blocks.
How to Clear Hazy Solar Panels
When the stain had dried, we were ready to give them their lights and place them in the garden, but before we get to that, I want to tell you about another problem these lights suffer from: solar panel degradation. Since the panels are made of plastic, after one year in the elements, the plastic begins to haze. After two or three years, the plastic yellows and warps.
It’s a wonder any light at all manages to get through. The efficacy of the solar panels to charge the batteries is severely impacted.
How to solve this issue?
I had read that people were using clear nail polish to cover the solar panels. This seemed reasonable to me. Nail polish is kept in solution with acetone – that’s the nasty smell. It’s also what nail polish remover is made from. Acetone is one hell of a good and nasty solvent. It will melt plastic with ease (which is exactly what it’s doing in that nail polish bottle).
Well, if nail polish worked to restore the panels, and nail polish is mostly acetone, I wondered if straight acetone would also work. It would certainly be cheaper, as one gallon of acetone costs about $15, whereas one gallon of clear nail polish would run about $2700 (not kidding, I did the math).
Clearing Hazy Solar Panels with Acetone
I went to the basement and grabbed my can of acetone, some cotton wipes and a pair of nitrile gloves (acetone is a really nasty organic solvent – it’s a wonder it’s legal for beauty use – oh wait, no it’s no wonder at all. Our government has a long history of green-lighting dangerous products, especially women’s beauty products, but that’s off-topic).
I wiped half…
It did a beautiful job of melting away the imperfections, and while it was still wet, it looked great. But acetone is incredibly volatile, which means it evaporates quickly. Because of this, it leaves the surface of the plastic totally matte. It will still allow light to pass, but not as much as a clear or shiny coat. The whole point of a matte finish is to disperse the light waves in all directions. We want light to travel through to the solar cells below.
Okay, so acetone wasn’t the best solution. What else could I try?
Clearing Hazy Solar Panels with Lacquer
I remembered I had a can of lacquer in the garage, leftover from my umpteenth attempt at finishing an antique dining table we picked up at a tag sale a while back.
Hey you want to see something pretty awesome? Click the picture below to check out what I finally did with that antique dining table!
Anyway, I went and got the can of lacquer. If you think acetone is gnarly stuff….hooooooey! Lacquer makes it seem like roses in comparison. Do NOT use lacquer indoors! I knew that lacquer could also melt plastic, and it would leave a shiny coating, so I grabbed a brush and got ready to try.
Oh, what a joy this was! It was like melting butter with a blowtorch!
Look at that! Perfectly melted.
But…what’s that white spot? Did I apply so much lacquer that it completely melted through the plastic and started to eat away at the solar cell? Since I couldn’t see the panel through the haze before I started, I couldn’t be sure.
I decided to lacquer another panel, being careful to use less. It turned out great.
I decided to experiment on the two panels that seemed like the solar cells may have melted. I installed new rechargeable batteries that I had drained the charge from, then exposed the panel to the sunlight. The batteries recharged fine. I’m still unclear as to whether I melted the cells or not, but applying lacquer with a lighter touch solved the problem.
The lacquered cell was shinier than the acetone, but not as shiny as the pics I saw of people using clear nail polish. I thought that I could up that shine with another coat, but I wanted this process to be quick, as we have over 100 lights all around the yard. Cost per gallon: about $50. Much cheaper than nail polish!
Clearing Hazy Solar Panels with Nail Polish
Next I wanted to try nail polish, so I went to the drug store and started rooting around in the cosmetics section. I may as well have been a donkey shopping in an electronics store for all I understood in that vibrant and sparkly aisle. I was rather unwashed and smelly, having come straight from yard work, and I must have appeared to the female patrons of that aisle like some sort of barnyard animal rooting through a buffet table. At last I found a real bargain: two bottles of clear polish for $3. In fact, the deal seemed a little too good to be true, since all the other bottles were in the $6-$9 range for one measly bottle.
Whatever, I grabbed the cheap stuff and galloped to the register, braying as I went.
My hopes weren’t high, as “you get what you pay for” kept running across my mind.
I was right. This is how it looked after I painted it.
No difference. What the hell was that stuff? No wonder it was two for $3.
My mom gave me a bottle of Sally Hansen clear nail polish so I could try again. This time, it worked. For this experiment, I was able to employ the services of my minion.
Oh, didn’t you know I had a minion? Indeed. He’s currently on summer vacation, thus haunting my workspaces. Now that he’s practically 13, I feel okay mentioning him in the blog. Handan and I aren’t ones to plaster our kid all over the internet, so you probably haven’t seen him before. His name is Barish, and he’s my step-son, but from now on and forevermore, he will be referred to as my son, because that is how I see him. And as every tradesman must serve an apprenticeship to a master, every son must serve a minionship to his dad.
“Boy!” I called
“Come and sit. I need your hands.”
“Hold this. Okay, now take this and start brushing it on there. Excellent!”
Not bad, not bad! The finish was clear and glossy, though the nail polish didn’t completely melt the plastic, as you can still see some haze underneath the gloss.
The Verdict – Which Product is the Best for Clearing Hazy Solar Panels?
It is cheaper and quicker to apply, but it requires nitrile gloves and good ventilation.
DIY Cedar Cube Solar Landscape Lights in the Garden
Okay now that we’ve learned how to revive our faded cells and now that you’ve met my
minion son, let’s get back to those cedar cubes and pillars.
Handan placed them around the garden…
The best part (aside from their handsome and distinguished looks) is that when my clumsy feet or the dogs’ frantic paws knock these lights over, nothing breaks! We need only to right them, then all is well again.
And we waited for nightfall…
Before you leave, here are some more garden decor and lighting ideas for you:
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