To remove resin from internal cavities and channels, thoroughly rinse out 3D prints by using a syringe and compressed air.
Resin can sometimes get trapped in your part, especially when printing internal channels like in this millifluidic piece. Here we show how you can use a syringe and compressed air to thoroughly rinse out these details.
1. Remove your part from the IPA bath
2. Run IPA through the part with a syringe
3. Clear channel using compressed air
4. Water-tight prints are perfect for fluidics
Here we use IPA with a touch of food coloring to demonstrate our internal channels. You can also experiment by filling internal channels with colored resins (which can be cured with a laser pointer) or glow in the dark materials for interesting effects.