Wire Terminal/Connector Block/Strip

by ValarmLLC, published

Wire Terminal/Connector Block/Strip by ValarmLLC Apr 6, 2017
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1221Views 392Downloads Found in Electronics


Update: 3 new layouts uploaded, and these have a 1.5mm "backing" under the nut to reduce likelihood of short-circuit accidents as mentioned in the description below.

Here's our "collection" (we'll add to it as we make more) of quick-printing, simple, ridiculously useful terminal blocks. Press-fit the nut and away you go. Certainly best for low voltage applications, (not "rated" for ANYTHING: you print and use this at your own risk and trusting your own knowledge of electricity and electronics). There's no base below the nut, which means that you probably should NOT use this on a steel/aluminum/conductive base / substrate / mounting plate of any kind, unless you're looking to burn some stuff with electricity and possibly even hurt yourself.

Sized and designed for #6-32 hardware, the screw should best be 3/8" long to avoid reaching the base plate and marring it or worse, causing a short circuit (if both screws reach). Use a longer screw at your peril, though it can be useful in certain situations (perhaps you want to stack a bunch of connectors, for example).

The screw-down slots are sized for #6 sheetmetal screws, and are spaced at 0.5CM intervals, to conveniently match up with the BUD Industries backplates we use so often (in the photos). We use a ton of these things while building various remote monitoring systems for our customers - learn more at Valarm.

Print Settings

Printer Brand:



MakerGear M2








4 bottom layers and 5 top layers, with 4 outline layers and 30% infill, will make this part unbelievably strong in PLA "Plus". The press-fit of the #6 hex nut (we use the sort with a nylon locking component) has only been tested with eSun PLA+, our favorite overall filament. Probably it will work very well with PETG too.

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This is awesome. One suggestion, though... wouldn't some sort of plate above the nut prevent it from being puled through the block if too much torque is applied to the screw?

i agree, why not try to retain the nut?

Take a look at the REMIX one.

The screw pulls itself down toward the nut. Once the screw has stopped against the washers and/or wire forks, which are stopped against the top of the terminal stripped, it does begin to pull the nut up through the 3D printed plastic. Then it stops when the nut meets the bottom of the washer or crimped-on fork. The nut is held in place by a very tight fit in the printed part. But yes - if at this stage you pull (very hard) on the wires, you could pop the nut out of the terminal strip, and all the wires and connection and screw and washers will come with it, intact.