DIY Spray Paint Pump from Disinfectant Sprayer
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Turn a cheap disinfectant sprayer into a fully functional spray paint pump for under $1!
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**DIY Spray Paint Pump from Disinfectant Sprayer - Free STL**
Turn a cheap disinfectant sprayer into a fully functional spray paint pump for under $1! This DIY project uses a 370 dual-head air pump and a 3D-printed housing (PETG recommended; PLA may soften with heat). Perfect for makers, hobbyists, and anyone looking to upcycle old sprayers into a budget-friendly spray painting tool.
**How It Works:**
Check out the full build guide on my YouTube video:
It covers assembly, newbie tips, and fixes for issues like paint bottle spills.
**Tips:**
- Verify pump dimensions before printing.
- Feel free to remix the STL for your setup!
Got ideas to improve this design? Drop a comment here or on the YouTube video! If you like this project, please give it a like and check out my channel for more DIY builds. Happy printing and painting!
**What’s Included:**
- STL file for the pump housing
- Alternative housing STL without the switch
- Designed to fit a 370 dual-head air pump (~$1 online)
Search for "370 dual-head air pump" online (370雙頭氣泵).
**Assembly Notes:**
- Use five M3x8 screws for assembly and one M3 screw to secure the neck.
- Soft rubber tube: 7mm outer diameter, 4mm inner diameter.
- Optional: KCD1 switch and JST connector for easy assembly.
- Add a 104 ceramic capacitor for motor durability.