New Update 21st June 2026 I have now posted a new version of the connector to contain a tail that allows securing of the wires to the connector which in turn also supports the pins and their positions. As shown in the image, I have shown 2 mthods I use, 1 - Blue Painters tape cut thin, and 2 - Black Elastic band, options are endless as this is how I have designed it. Securig options I have considered, CA Glue, Hot melt glue, Electrians tape, string.. etc.. The choice is up to you, what you have available and convenient to use. I have also retained the previous STL version for anyone who wishes to use.

Main.. Pinhead connector is designed to offer a basic connector for electronics that can be printed on demand using a standard single row 2.54mm male header pins as shown in one of the images attached. Each file available covers pin numbers of 1 to 5, There are 2 files to every connector, PinHhead_Connector_x5 & PinHhead_Connector_x5mirror are a pair, the file ending in mirror is an exact mirrored duplicate of the first file, this is required to bring both sides of the connector together.

All files are printed with a standard 0.4 nozzle with a very standard 0.2 layer hieght. Most importantly as designed for maximum strength, it needs to be printed entirely with "Walls", No infills, No top or bottom layers, No supports. The orientation of the print is as shown in the STL files. A 3 pin connector takes roughly 8 minutes to print.

When printed, the long 6mm side of the pinheader is pushed into the channels of the print as far as it can go, you will need to with a bit of force towards the end, push the pinheader all they way into the print where is should settle neatly in a horizontal position, the tight fit is designed to prevent the pinheader from falling out during general use.

Both halves have have a guide on the far left / right which eases the allignment when bringing the two halves together. As shown in the cut section image, the pins of both halves connect under the opposing pins that when connection is completed, they are pushing up against each other while resistance is pushing against it on the soldered side of the pin set. Then when both halves are pushed together, the flexible clip in the print will clip into place wonce both halves are completely joined.

To disconnect, with your thumb and pointer fingure, you grab each side of the connected halves from the soldered end, and the flex tab, squeeze and pull appart.

Following are challnges you may come across..

• After print, make sure the pin channels are clear, any print debris in the channels may prevent the pins sitting evenly which might make connecting impossible.
• When first connecting after print, it could be very tight to connect and pull appart, have found, leaving connected for a little while, will loosen things up and make it easier to connect and disconnect.
• The pins themselves can possibly slide in and out and end up uneven and cause connection issues.
• The may also be subject to bending also causing issues with connections.

This is my first posted designed print, I created this out of an interest to have a more flexible on demand no frills option connector, this was not meant to be any sort of long term reliable product to replace profesional systems, but rather something cheap, easy and available on demand without the need for wasting a fancy more complicated connection system. I can make available larger pin sets if needed and welcome any thoughts on the print.