Solderless 10mm 4-wire flat LED strip wire clip/splice
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A small solderless clip to attach wires to 10mm wide 4-wire LED strip lights.
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After struggling with the tiny, thin solder pads tearing off my cheap 10mmx4wire RGB LED strips when making custom splices and installs in furniture I designed this solderless clip. Sure, there are commercial solutions for this problem, but I'm a 3d printer owner… You know how that is.
The clip is designed to work with solid conductor 23awg wire. Mine was sourced from Commscope Webtrak Cat6 ethernet cable, but any similar wire should work. Note: stranded wire is NOT recommended, though it may work.
This is a small print, with small details. I recommend a 0.16 layer height when using a 0.4 nozzle. My Qidi X-Plus 3 can print 10 sets (cap and body) in Sunlu high-speed PETG in just under an hour and a half. YMMV.
The clip body prints best laying flat, I find the cap prints best standing up in the orientation shown, but do it however works best for your printer and material.
See the pictures for general assembly gist…
The wire should press tightly into the guides and not move easily, as there are features to bite into the insulation and hold it.
Once the stripped ends of the wires are held in place, you should make sure there is a slight downward bend in the end of the wire, so it forms a sort of hook, tweezers should be adequate to do this. Also, the end of the wire closest to the joint is NOT held as tightly by design, so it may be lifted up in order to add the bend, and then smoothed back down into the wire guide. The top of the clip will drive this hook into the solder pads of the LED strip when snapped down tight.
In theory the wire should penetrate the very thin plastic insulation layer on the solder pads, but I always like to scrape them gently with a knife to make sure they are bare copper before finishing the joint. A very thin tinning with solder may also be beneficial, though too much will be detrimental, and it shouldn't be required.
With practice you can “charge” a clip with wire, place the back side of the top in place at an angle, and then the LED strip just needs to be inserted and the clip closed to complete the operation. It's much easier than trying to solder in a tight space, and less likely to damage the LED strip if it comes apart. It will pull apart if you yank on it too hard.
V3.1 Initial Public Release
V3.2 Added fillet to clip body rear to ease assembly.