[Phlogiston]

I use white wood glue, like it was contact cement. Apply a little to both surfaces, allow to partly dry prior to joining parts.

The issue with vendors is the changing inventory. Finding cones with paper suspension is much harder than finding ones with foam roll suspension especially in 3", 4" and 5" cones. Be careful not to get a cone with the VC cut-out (center) too large. You can cut a cone that has a VC cut-out that is too small.