Duplo compatible elevation piece that can be used to make spirals or ramps. Remix of https://makerworld.com/en/models/193551 mirroring a second side for added stability: makes it easier to build higher or make ramps go straight or in different directions.

Each piece is about 21g of filament.

Once a full loop is completed subsequent loops can be stacked on top of the first loop with 12 brick heights delta. Since the connector is half a brick height on the column side this means you need 11.5 in height between layers:

To help with getting the right height I have another model for a 2x2 half-height brick:

And models for pillars:

See also the previous one-sided version which uses less filament and half the duplos for pillars, but is less stable and somewhat limited to spiraling: