Drink Holder Insert- Flat Top

This fits into the arm rest deink holder on my lounge recliner, so that a Cup or mug with a handle can be placed in the same location.Is flat top so as not to impede a handle, but that also means the cup or mug has no restriction to be knocked sideways or tipped over.Center hole for easier removal from drink holderi have included the Fusion file is anyone wants to add a lip , but that would also mean supports will be required.## edges has a 1mm fillet and The ‘underside’ of the flat top has a curve profile to match my specific drink holders.Size: Insert section diameter : 82mmflat top section diameter: 111mmtop hole diameter: 20mm