Concrete Backfiller

The Concrete Backfiller is an MV tier multiblock for filling in the area below it with light concrete to seal any air gaps where mobs could spawn. The Concrete Backfiller is available in two tiers to further increase its range. The filling area extends from bedrock to the layer just below the machine and up to a 64 block radius. The speed depends on the supplied voltage and is capped at 1 block per tick with UV power. The Concrete Backfiller does NOT break or replace blocks and does NOT stop when it reaches a wall. Liquids can either be skipped or filled based on the liquid filling setting in the GUI of the controller. Each block of light concrete consumes 144L of wet concrete from the input hatch.

The Concrete Backfiller is available in two tiers but the only structural difference between them is the type of casings and the controller itself. Buses/hatches are limited to the casings on the bottom layer of the structure. Multi-amp and laser energy hatches are not supported, but there can be multiple regular energy hatches for overclocking. The minimum tier of the energy hatch is MV or EV depending on the tier of the structure. An input/output bus is optional and exclusively for holding mining pipes. Use the Multiblock Structure Hologram Projector to visualize/build the structure.

Structure

• Controller: Front bottom center
• 15 Frame Box^[1]
• 3-8 Stable Machine Casing^[1]
• 1+ Energy Hatch: Any bottom casing
• 1 Maintenance Hatch: Any bottom casing
• 0+ Input Bus: Any bottom casing
• 1+ Input Hatch: Any bottom casing
• 0+ Output Bus: Any bottom casing

The Concrete Backfiller slowly fills in the area below it with light concrete to seal any air gaps where mobs could spawn. The Concrete Backfiller does NOT break or replace blocks and does NOT stop when it reaches a wall. Liquids (ie. water and lava) can either be skipped or filled based on the liquid filling setting in the GUI of the controller. Each block of light concrete consumes 144L of wet concrete from the input hatch.

The vertical range of the Concrete Backfiller is from bedrock to the layer just below the machine. The horizontal range is square despite being listed as a radius and depends on the tier of the machine, as seen in the following table on the left. The fill area is centered on the controller rather than being perfectly chunk-aligned like the Fluid Drilling Rig.

The filling speed depends on the supplied voltage, as seen in the following table on the right. Exceeding the minimum voltage tier applies imperfect overclocks which consume 4x the power for 2x the speed. There is no benefit to exceeding UV power since the machine cannot go faster than 1 block per tick. The power consumption is always 0.75A of the supplied voltage.

When first enabled, the Concrete Backfiller deploys its mining pipes from the center of the machine straight down to bedrock. This can take a few seconds depending on the current y-level of the machine and voids any blocks in the way. If necessary, press the "abort and retract mining pipes" button inside the GUI of the controller to immediately stop the process. Supply mining pipes through an input bus and retrieve them from an output bus, or just use the slot inside the controller.

The Concrete Backfiller starts at the very bottom of its vertical range and completely fills a layer before moving up to the next one. The current y-level being filled is displayed in the GUI of the controller. The mining pipes are automatically retracted as the layers are filled so there is not a long vertical hole under the machine once it finishes. The final result is all air blocks being replaced by light concrete, leaving nowhere for mobs to spawn. Alternatively, move bases to the Personal Dimension or disable mob spawning entirely after reaching EV (acceptable by the Stargate rules).