Hacker News new | past | comments | ask | show | jobs | submit login

We use a three way hose connector and just block or open the 3rd side with a thumb to activate/deactivate the vacuum pressure at the tip.

The pump was $20 and the end is a 5cc syringe. All in, it was under $40 and works great!




Consider applying for YC's Spring batch! Applications are open till Feb 11.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: