no secret to it really get a cosktail stick( the kebab skewer was too thick) ram it through some buds, heat the oil, dab and layer the fans round and round. i did a good few layers just to make it reasonably airtight.
i held the buds in place with thin thread and then wrapped the outside just to keep the form. then unwrap the thread and it pulls out the end. if this makes sense haha
in hindsight i think it would be better made using one wide fan and gluing a seem down the side a lot less hassle. i'm going to have another go when i do my next batch