Layerblend 3D, multi-color printing on a single-extruder printer
An AMS or multi-toolhead setup is one way to print in color. Swapping filament at the right layer, on a printer you already own, is another. Layerblend 3D splits a model into color zones by height and works out exactly which layer each filament swap needs to land on for a clean transition, then pauses the print at those layers so you can make the swap and continue.
Open Layerblend 3D Pro plan, 15 EUR/month. The interface is in English.How it works
Three steps: load the design, let the tool plan the swaps, print with pauses.
Load the design
Bring in the image or design you want reproduced in multiple colors by height, the same input the tool uses to decide where one color zone ends and the next begins.
Let the tool plan the swaps
Layerblend 3D works out the layer at which each filament swap needs to happen for the color boundary to land cleanly, rather than you guessing a layer number from the model's height and the slicer's own layer count.
Print with pauses
The print pauses at each computed layer. Swap the filament, resume, and repeat for every color zone until the print finishes with the transitions where they were planned.
One extruder, a handful of colors
No AMS, no multi-toolhead setup, no special printer: just a filament swap at a computed layer.
Built around where the swap actually needs to land
A color change on the wrong layer shows as a visible seam. The whole tool exists to find the right layer instead of guessing at one.
No AMS, no extra hardware
Multi-color printing usually means an automatic material system or a second toolhead. Layerblend 3D gets a multi-color result out of a plain single-extruder printer instead, using a paused, manual filament swap at a layer the tool has already worked out for you.
Swaps land where the boundary actually is
A color transition that lands a layer too early or too late shows as a visible seam or a band of the wrong color at the edge of a zone. The tool computes the swap layer from the design's own color zones by height, rather than leaving you to estimate it from the model and the slicer's layer count.
Any printer that can pause qualifies
There is no hardware requirement beyond a single extruder and the ability to pause mid print, a capability practically every modern FDM printer already has. The swap itself, changing the loaded filament, happens by hand while the print is paused at the layer the tool named.
A handful of colors, chosen deliberately
There is no fixed limit on how many swaps a print can use, but in practice two to four colors give a striking result for a reasonable amount of manual swapping. Signs, logos, decor pieces and lithophane lamps are the kind of design that benefits most from a small, deliberate color count.
Frequently asked questions
What is layer blending, exactly?
It is a technique for multi-color printing by height rather than by cross-section: the model is split into color zones stacked from bottom to top, and the print pauses at the boundary between each zone so you can swap the loaded filament before the next zone begins.
Do I need a special printer for this?
No. Any FDM printer with a single extruder that is able to pause mid print works, which covers practically every modern desktop machine. No AMS, no multi-toolhead setup and no firmware modification are required.
How many colors can I realistically use?
There is no hard limit built into the tool: as many swaps as you are willing to make by hand are possible. In practice two to four colors give the most striking result for a reasonable amount of manual effort, since each additional color means another pause and another swap.
How does the tool decide where to put each swap?
From the color zones in the design itself, mapped by height against the model's own layer count, so the boundary between two zones lines up with an actual printed layer rather than falling between two layers where a clean swap is not possible.
What kind of models suit this technique best?
Anything where color changes by height rather than by cross-section reads well: signs, logos, decor pieces and lithophane lamps are named examples, because their color boundaries are naturally horizontal bands rather than a pattern that needs to change within a single layer.
How much does it cost to use?
Layerblend 3D is part of the Pro plan (15 EUR/month). The same EduFacturing account, once upgraded to Pro, opens the rest of the tool set.
Other tools
Part of the EduFacturing tool set for 3D printing.
The rest of the tool set
This tool is part of the Pro plan (15 EUR/month). It is one of a set of more than a hundred engineering tools on EduFacturing: multi-color print prep, cost calculation, print diagnostics and the rest. Most of them sit behind a free account.
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