# 3D-Printed Solder Paste Dispenser Hand Switch ## Print and Solder! ![](https://cdn-learn.adafruit.com/assets/assets/000/025/298/medium800thumb/tools_solderdispenserLarge.jpg?1448318084) [Download STLs & Rhino File](https://learn.adafruit.com/system/assets/assets/000/025/299/original/solderPasteButton.zip?1431099639) This hand switch was designed to work with an auto paste dispenser we found on Amazon. I would assume that any other model that uses a 1/8" jack as a switch would work as well, but no guarantees :) [http://www.amazon.com/s/ref=nb\_sb\_noss?url=search-alias%3Daps&field-keywords=automatic+glue+dispenser&rh=i%3Aaps%2Ck%3Aautomatic+glue+dispenser](http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=automatic+glue+dispenser&rh=i%3Aaps%2Ck%3Aautomatic+glue+dispenser) It ships with a hand switch for a 150CC syringe, however, in the Adafruit shop we like to use smaller, 30CC syringes. That's where 3D printing comes in. Remember, an air compressor is required for this tool and not included!!   # **Parts!:** 1. [Tactile Switch](http://adafru.it/1119) 2. [1/8" Headphone Jack](http://adafru.it/1699) 3. [1/8" Audio Cable](http://adafru.it/876) 4. Two 4-40 nuts & screws (Approx. 1/4in, not sold from Adafruit)        Print the two sides using the STLs in the download link above. Also included is the Rhino .3dm file for any edits.   With this particular model (and I would assume any other that uses a 1/8" audio cable) the dispenser is activated when the ring and tip are shorted.      Using as thin a wire you can find, solder the switch to the tip and ring of the 1/8" jack. Bend the leads underneath so that they fit within the enclosure, and screw the two sides together.   Tighten once around the syringe! ![tools_Screen_Shot_2015-05-08_at_11.47.56_AM.png](https://cdn-learn.adafruit.com/assets/assets/000/025/306/medium640/tools_Screen_Shot_2015-05-08_at_11.47.56_AM.png?1431100499) ![tools_DSC_0174.jpg](https://cdn-learn.adafruit.com/assets/assets/000/025/309/medium640/tools_DSC_0174.jpg?1431100616) ![tools_DSC_0175.jpg](https://cdn-learn.adafruit.com/assets/assets/000/025/310/medium640/tools_DSC_0175.jpg?1431100638) ![tools_DSC_0173.jpg](https://cdn-learn.adafruit.com/assets/assets/000/025/312/medium640/tools_DSC_0173.jpg?1431100777) ## Featured Products ### Tactile Switch Buttons (12mm square, 6mm tall) x 10 pack [Tactile Switch Buttons (12mm square, 6mm tall) x 10 pack](https://www.adafruit.com/product/1119) Medium-sized clicky momentary switches are standard input "buttons" on electronic projects. These work best in a PCB but [can be used on a solderless breadboard as shown in this tutorial](https://learn.adafruit.com/adafruit-arduino-lesson-6-digital-inputs?view=all). The... In Stock [Buy Now](https://www.adafruit.com/product/1119) [Related Guides to the Product](https://learn.adafruit.com/products/1119/guides) ### Breadboard-Friendly 3.5mm Stereo Headphone Jack [Breadboard-Friendly 3.5mm Stereo Headphone Jack](https://www.adafruit.com/product/1699) Pipe audio in or out of your project with this very handy breadboard-friendly audio jack. It's a stereo jack with disconnect-switches on Left and Right channels as well as a center ground pin. You can use any 3.5mm stereo cable with this jack. The pins are on 0.1" spacing so it plugs... In Stock [Buy Now](https://www.adafruit.com/product/1699) [Related Guides to the Product](https://learn.adafruit.com/products/1699/guides) ### Stereo 3.5mm Plug/Plug Audio Cable - 6 feet [Stereo 3.5mm Plug/Plug Audio Cable - 6 feet](https://www.adafruit.com/product/876) This basic cable comes with two 3.5mm (1/8" headphone jack size) stereo connectors. It's fairly straight forward, you'll commonly need these to connect two audio devices together. Cable is 6 ft long. In Stock [Buy Now](https://www.adafruit.com/product/876) [Related Guides to the Product](https://learn.adafruit.com/products/876/guides) ## Related Guides - [BlueLive: Livestream Studio switcher controller](https://learn.adafruit.com/bluelive.md) - [Portable Qi Charger](https://learn.adafruit.com/portable-qi-charger.md) - [ Faz-Wrench - Five Nights at Freddy's](https://learn.adafruit.com/faz-wrench.md) - [Arduino Lesson 4. 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