Museum

The Coke Oven had always been a Railcraft multiblock until it was replaced with a GregTech version in 2.9. Its apperance, cost, and function was nearly identical to the current GregTech version except items and fluids could be inserted or extracted from any block on any side, there was no controller block, and there were no coke oven hatches. Creosote oil was automatically extracted with seared faucets and a redstone clock while charcoal was automatically extracted with hoppers.

The Steam Oven was also from Railcraft and previously the only multiblock furnace prior to the Multi Smelter. It was deprecated in favor of the Steam Hearth which was both GregTech based and matched the other Steam tier multiblocks. The Steam Oven could smelt up to 9 items simultaneously with 8,000L of steam over 13.5 seconds.

The Industrial Material Press (IMP) was split into the Industrial Bending Machine (IBM) and Industrial Forming Press (IFP). It had a boring 3x3x3 structure but could run both types of recipes. The mode was switched in the GUI of the controller or by right-clicking the controller with a screwdriver.

The Fluid Shaper was a variable width fluid solidifier multiblock replaced by the Mass Solidifier. It had the same ramping speed bonus that increased with activity and the same EU/t discount but its parallels partially depended on the width of the machine, which made it an absurdly wide multiblock for how much it needed to be spammed. Its structure check was also difficult to work with from a backend perspective.

The Cyclotron was the predecessor to the Large Hadron Collider (LHC). It would run passively for long periods of time to produce subatomic particles that had a low chance of appearing. The particles it produced were not beams and could actually be picked up and stored for future use. It was only really used for making enough quantum anomalies for the Quantum Force Transformer (QFT), and making enough bosons and mesons for the stargate-crystal dust.

The Mega Electric Blast Furnace (MEBF) was the predecessor to the Exothermic Hearth (ExH). It had the same 256 parallels, support for multi-amp and laser energy hatches, and unlimited tier skips but it did not have a pyrotheum heating bonus. It cost the same 864 heating coils but its structure was objectively not very pleasant to look at.

The Mega Vacuum Freezer (MVF) was the predecessor to the Endothermic Fridge (EnF). It had the same 256 parallels, support for multi-amp and laser energy hatches, unlimited tier skips, and subspace cooling. However, it did not have a cryotheum cooling bonus and its structure was objectively not very pleasant to look at. There was no mandatory air inside the structure so it was possible to heavily overlap MVFs together.

The Fluid Discretizer was required for any AE2 network involving fluids. It represented fluids as drops to allow crafting requests and level emitters to interpret them as items without actually converting them. Fluids would still appear in the fluid terminal but were effectively invisible to crafting requests and level emitters without a Fluid Discretizer somewhere on the network.

The Super Bus was the predecessor to compressed and quantum buses. They served as larger input and output buses except their stack sizes were still limited to 64 items and you had to scroll to see all the inventory slots. The maximum tier was UHV which had 160 slots in total. These were primarily used by the Large Molecular Assembler to hold patterns for the machine.

The Buffered Dynamo Hatch was equivalent to the 4A dynamo hatch except it had a larger internal buffer for EU. Large turbines and engines did not support 4A dynamo hatches but they did support these. They were deprecated because they were redundant, could not upgrade to higher amp versions, and caused a lot of confusion.

The Fluid Canner was a singleblock machine that inserted/extracted fluids from cells, potions, drinks and anything else involving a fluid. It was deprecated because it was no longer needed after its recipe map was merged with the canning machine. The merge also allowed the TurboCan Pro to process both types of recipes without changing modes.

The Slicing Machine was a singleblock machine that sliced foods (e.g. bread) and circuit imprints for the Circuit Assembly Line. It was deprecated because it was no longer needed after its recipe map was merged with the cutting machine.

The Plasma Arc Furnace was a singleblock machine that processed arc furnace recipes at only 1A of power with either nitrogen or argon plasma. It was a direct upgrade to the regular arc furnace because it ran much faster and could process more advanced materials. It was deprecated because it was no longer needed after its recipe map was merged with the regular arc furnace.

The Crop Weed Picker was a singleblock machine that automatically picked weeds off IC2 crop sticks within its range. It required 1A of power, 20 L/s of lubricant, and a weeding trovel or a spade in its inventory. It was removed with the introduction of CropsNH because it was no longer compatible or necessary.

The Crop Bot could automatically tier-up, stat-up, and spread (duplicate) IC2 crops. It handled everything from placing crop sticks, removing weeds, moving crops between farms, and more. No player intervention was required beyond supplying the crop bot with enough crop sticks, telling it which script to run, and collecting the final products. It became deprecated with the introduction of CropsNH because it was no longer compatible or necessary.

The Tool Casting Machine was a singleblock machine that made single-use tools from specific molds and fluids. It was deprecated because it was no longer needed after its recipe map was merged with the fluid solidifier.

The Large Essentia Generator (LEG) was an EV tier multiblock that generated power from essentia. It supported multi-amp dynamo hatches and its diffusion cells were upgradeable to help it scale up to ZPM and beyond. It was deprecated because it was far too powerful for how easy it was to build and maintain.

The Large Processing Factory (LPF) was a nine-in-one multiblock machine. It had three modes each with three individual machine types. Metal mode could simultaneously operate as a compressor, lathe, and electromagnetic polarizer. Fluid mode could simultaneously operate as a fermenter, fluid extractor, and extractor. Misc mode could simultaneously operate as a laser engraver, autoclave, and fluid solidifier. The LPF was deprecated because all the individual machine types received their own multiblock equivalent and it was miserable gameplay spamming the same 3x3x3 cube for every single thing in the late game.

The Processing Array (PA) could stack up to 64 singleblock machines in its controller slot and function as a multiblock with all of them combined. It served as an alternative to multiblock spam, especially in UMV, since that many singleblocks were typically faster than their multiblock equivalents and it was only 3x3x3 in size. However, it was much more expensive to build that many singleblocks every single tier instead of simply upgrading energy hatches so there was a bit of a trade off. It was deprecated because its gameplay was not very exciting, its backend code was a mess, and it was too easy to avoid Cleanroom requirements.

The Parametrizer was a hatch specifically for configuring the parameters on TecTech multiblocks. It was available in three different tiers and each one had its own unique options and GUI. It was deprecated with the introduction of the LED parameter settings in controllers.

The Disassembler was a singleblock machine that could undo most assembler recipes. It would return most of the ingots, wires, circuits, etc. similar to the arc furnace but much more effective because it was not just raw materials. It was removed because it had to be carefully balanced every single time a new recipe/discount was introduced and it sometimes created infinite resource loops.