Hi DJI if anyone's on at the moment.
We have no idea what kind of plastic the shells of these drones is made from but it is somewhat prone to cracking.
What is the best/correct type of adhesive to use when repairing these cracks please?
Thank you in advance flor your advice.

here is an idea ! Hope it helps

Hi. Thank you for reaching out to DJI Forum. With regards to this matter. I hope that our valued DJI co pilots can provide you the best recommendation for this inquiry. Just a friendly reminder DJI does not recommend doing any DIY repair for the said drone to ensure that the drone is properly assessed, tested and repair. Kindly please contact our DJI support team to start up a ticket: ( https://www.dji.com/support?site=brandsite&from=nav ). We have the professional team who would do their best to assists you with regards to this matter. Thank you.