Product Description: 1. Product name: 3D printing bubble pen popcorn pen 2. Product size: 6pcs/box. The size of a pen is approximately 10.5x1.5cm/4.13x0.59 inches. The size of a box of bubble pens is approximately 13.5x8.5cm/5.31x3.35 inches. 3. Product style: 3D printing bubble pen popcorn pen 4. Product color: orange, yellow, green, red, blue, Steps for usage: Step1: First draw a graphic on the paper with a popcorn pen, so that you can use a little force to "squeeze" the pen. If you want to explode, you will squeeze some liquid out. Step2: Plan A: Set the prepared hot air blower to the high temperature file, and blow it straight to the painted pattern. The blow is close to blowing, and it must be blown for at least two minutes or more. The effect is better. The surrounding area is better with books or cardboard to accumulate hot air to accelerate its expansion. Scheme B: Place the paper with the pattern in the microwave oven and adjust to the high temperature for 2-3 minutes (for example: BBQ/Microwave 800W for 2 minutes). Can't wait to dry it later Step3: Take out your DIY work and share it with your friends! Note: It won't burst out. If the heat is not enough, just use the microwave oven to turn it, it will have a magical effect It is also recommended to use the direct and convenient method! Attention: 1.As we all know, different computers display different colors, and the real color may be slightly different from the following picture. 2.Due to manual measurement, the size may have an error of several centimeters Shipment includes: 1 box of bubble pen