Changing the glass on a FreeMax tank typically involves the following steps: Empty the tank of any e-liquid. Disassemble the tank by unscrewing the top cap and base from the glass. Carefully remove the broken or damaged glass from the tank. Replace it with a new glass tube of the appropriate size for your FreeMax tank model. Reassemble the tank by screwing the top cap and base back onto the glass tube. Ensure that all connections are snug but not over-tightened. Refill the tank with your preferred e-liquid and let it sit for a few minutes to allow the coil to saturate before vaping. Please note that the exact process may vary depending on your specific tank model, so it's a good idea to consult your tank's user manual or refer to manufacturer guidelines for detailed instructions.