Isobutane spacer for stacking

Spacer for making standard-sized isobutane canisters stackable, intended for storage or for transport. No supports needed. PLA or PETG is probably fine; you don't want to leave isobutane cannisters out in the sun to PETG isn't really required. Note that the bottom diameter of different brands of cannisters are +/-0.5mm, so the top cannister may or may not snap-fit in.