Slice Engineering Plastic Repellent Paint Repels Plastic & Prevents Buildup on the Nozzle | Get Enhanced Print Quality | Hassle-Free Application | Water-Based PTFE Nanosuspension (3 mL - 5 Pack)

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Just heat it up and use some steel wool or a wire brush on the tip. You can also brush some plastic repellant on the tip to help prevent this in the future.

Slice Engineering Plastic Repellent Paint Repels Plastic & Prevents Buildup on the Nozzle | Get Enhanced Print Quality | Hassle-Free Application | Water-Based PTFE Nanosuspension (3 mL - 5 Pack) | eaves-shop