how to make sprue goo

3 min read 30-01-2025

Meta Description: Learn how to make your own sprue goo for cleaning 3D printer build plates and removing stubborn filament residue. This comprehensive guide covers different recipes, safety precautions, and tips for optimal results. Get ready to say goodbye to frustrating cleaning sessions!

What is Sprue Goo?

Sprue goo, also known as filament goo or 3D printing cleaning solution, is a versatile cleaning agent specifically designed for removing stubborn filament residue from 3D printer build plates and other surfaces. It's a particularly effective solution for removing PLA, ABS, and other types of filament. Making your own sprue goo is cost-effective and allows you to customize the recipe to your specific needs.

Why Make Your Own Sprue Goo?

Store-bought solutions can be expensive. Making your own sprue goo is significantly cheaper. Plus, you control the ingredients, ensuring a safe and effective product. You can also tailor the recipe to your specific needs and preferences.

Ingredients and Equipment

You'll need these common household ingredients and equipment:

Mineral Oil: This forms the base of your sprue goo, providing lubrication and cleaning power. Look for a pure mineral oil, not a scented or medicated version.
Acetone (Optional): Acetone is a powerful solvent ideal for dissolving certain types of filament residue, especially ABS. However, exercise extreme caution when using acetone due to its flammability and strong fumes. Always work in a well-ventilated area.
Measuring Cups and Spoons: For accurate measurement of ingredients.
Mixing Bowl: A glass or plastic bowl works well.
Storage Container: An airtight container to keep your sprue goo fresh. An old jam jar or similar container is perfect.

Sprue Goo Recipes:

Here are two recipes for sprue goo – one basic and one with acetone for tougher residues:

Recipe 1: Basic Sprue Goo (No Acetone)

This recipe is a great starting point and is safe for most filaments.

1 cup Mineral Oil

Simply pour the mineral oil into your storage container. That's it! This simple recipe is effective for removing most filament residue.

Recipe 2: Sprue Goo with Acetone (For Stubborn Residue)

Caution: Use acetone with extreme care. Always work in a well-ventilated area and wear appropriate safety gear, including gloves and eye protection. Acetone is flammable and its vapors can be harmful.

¾ cup Mineral Oil
¼ cup Acetone

Gently mix the mineral oil and acetone in your mixing bowl. Avoid vigorous shaking to minimize the risk of acetone splashing. Pour the mixture into your storage container.

Using Your Sprue Goo:

Apply: Apply a small amount of sprue goo to the affected area of your build plate or other surface.
Spread: Use a spatula, paintbrush, or even your finger (if you're not using acetone) to spread the goo evenly.
Wait: Allow the sprue goo to sit for a few minutes to soften the filament residue. The time required depends on the type and amount of residue.
Scrape: Gently scrape away the softened filament using a scraper or plastic putty knife.
Wipe: Wipe clean with a paper towel or cloth. Repeat as needed.

Safety Precautions:

Acetone: Always use acetone in a well-ventilated area and wear appropriate safety gear. Keep away from open flames.
Storage: Store sprue goo in a tightly sealed container, away from children and pets.
Disposal: Dispose of used sprue goo and cleaning materials responsibly. Check your local regulations.

Tips for Success:

Start with the basic recipe: If the basic recipe isn't effective, then consider adding acetone.
Test in an inconspicuous area: Before applying to the entire build plate, test your sprue goo on a small, hidden area to ensure it doesn't damage the surface.
Don't let it dry completely: Reapply sprue goo if it starts to dry out.
Clean your tools: Clean your scrapers and other tools after each use.

Conclusion

Making your own sprue goo is a simple, cost-effective, and environmentally friendly way to keep your 3D printer clean. By following these instructions and safety precautions, you can easily create a solution that effectively removes even the most stubborn filament residue. Remember to always prioritize safety when working with chemicals like acetone. Now get cleaning!