Classic Pipes Inverted Pipe Variants and Redstone Toggling
Inverted pipe variants that toggle with redstone signals give you a way to reverse a pipe's normal behavior by applying a redstone signal. In Classic Pipes, each inverted variant is a separate craftable block, and the recipes follow a consistent pattern: take the regular pipe and combine it with a 
Redstone Torch, or build the inverted version from its inverted counterpart plus a specific material. The 
Networked Recipe Pipe is covered at the end because its recipes differ from the rest.
Inverted Copper Pipe
The 
Inverted Copper Pipe is the base inverted item pipe and the starting point for several other inverted variants.
Copper Ingot x2 + 
Glass + Redstone Torch produces an Inverted Copper Pipe.
Copper Pipe x8 + Redstone Torch produces an Inverted Copper Pipe.
The second recipe is the standard conversion: eight regular pipes plus a redstone torch yields eight inverted pipes.
Inverted Advanced Copper Pipe
The 
Inverted Advanced Copper Pipe is the advanced-tier inverted item pipe.
Advanced Copper Pipe x8 + Redstone Torch produces an Inverted Advanced Copper Pipe.- Inverted Copper Pipe x8 +
Diamond produces an Inverted Advanced Copper Pipe.
This gives you two routes: convert an existing advanced pipe with a redstone torch, or upgrade inverted basic pipes using a diamond.
Inverted Copper Fluid Pipe
The 
Inverted Copper Fluid Pipe is the inverted fluid-handling pipe at the basic tier.
Copper Fluid Pipe x8 + Redstone Torch produces an Inverted Copper Fluid Pipe.- Inverted Copper Pipe x8 +
Honeycomb produces an Inverted Copper Fluid Pipe.
Note the second recipe: it converts inverted item pipes into inverted fluid pipes using honeycomb, rather than starting from a fluid pipe.
Inverted Advanced Copper Fluid Pipe
The 
Inverted Advanced Copper Fluid Pipe is the top-tier inverted fluid pipe, and it has the most crafting options of any inverted variant.
Advanced Copper Fluid Pipe x8 + Redstone Torch produces an Inverted Advanced Copper Fluid Pipe.- Inverted Copper Fluid Pipe x8 + Diamond produces an Inverted Advanced Copper Fluid Pipe.
- Inverted Advanced Copper Pipe x8 + Honeycomb produces an Inverted Advanced Copper Fluid Pipe.
So you can reach this block by converting an advanced fluid pipe directly, by upgrading an inverted basic fluid pipe with a diamond, or by converting an inverted advanced item pipe with honeycomb. The diamond and honeycomb routes mirror the upgrade paths used elsewhere in the inverted family.
Networked Recipe Pipe
The Networked Recipe Pipe does not use a redstone torch in either of its recipes, so treat it as a separate case from the inverted variants above.
Block of Quartz x2 + 
Tinted Glass + 
Crafter produces a Networked Recipe Pipe.
Networked Routing Pipe x8 + Crafter produces a Networked Recipe Pipe.
The first recipe builds the pipe from raw materials, while the second converts existing networked routing pipes into networked recipe pipes.
Crafting Patterns Worth Remembering
Across the inverted variants, a few patterns repeat and are worth keeping in mind when you plan crafts:
- Every inverted variant can be made by combining its non-inverted counterpart with a Redstone Torch.
- Item-to-fluid conversion within the inverted family uses Honeycomb.
- Basic-to-advanced upgrading within the inverted family uses Diamond.
- The Inverted Advanced Copper Fluid Pipe is the only inverted variant reachable through all three of these routes.
If you already have a stock of regular pipes, the redstone torch recipes are usually the simplest path, since they convert eight pipes at a time. If you are working from inverted basic pipes instead, the diamond and honeycomb recipes let you move up to advanced and fluid variants without going back to the non-inverted blocks.
Covers the mod’s in-game guide topics: Inverted Copper Pipe Inverted Advanced Copper Pipe Inverted Copper Fluid Pipe Inverted Advanced Copper Fluid Pipe Networked Recipe Pipe