3d-printingHow-ToBeginner · 4 min read

How to Print with Soluble Support in 3D Printing: Step-by-Step Guide

To print with soluble support in 3D printing, use a dual-extruder printer or a printer that supports multi-materials, load the main filament and a soluble support filament like PVA or HIPS, and enable support structures in your slicer software set to use the soluble material. After printing, dissolve the support in water (for PVA) or a suitable solvent like limonene (for HIPS) to reveal the clean main print.

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Syntax

Using soluble support in 3D printing involves setting up your slicer software and printer correctly. Here is the general syntax or steps in slicer settings:

Main Material: The filament used for the actual model.
Support Material: The soluble filament used to print support structures.
Support Placement: Enable supports and set them to use the soluble material.
Dual Extrusion: Assign extruders for main and support materials.
Print Settings: Adjust temperatures and speeds for both materials.

none

Main Material: PLA
Support Material: PVA
Support Placement: Everywhere
Extruder 1: PLA
Extruder 2: PVA
Print Temperature (PLA): 200°C
Print Temperature (PVA): 215°C
Support Interface: Enabled
Support Density: 15-20%

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Example

This example shows how to configure Cura slicer for printing a model with soluble PVA support using a dual-extruder printer.

ini

; Cura Slicer Settings for Soluble Support
material_1 = PLA
material_2 = PVA
support_enable = true
support_material = material_2
support_placement = everywhere
extruder_1_temperature = 200
extruder_2_temperature = 215
support_interface_enable = true
support_density = 20
print_speed = 50
support_speed = 30

Output

Model prints with PLA as main material and PVA as support. Supports dissolve in water after printing.

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Common Pitfalls

Common mistakes when printing with soluble support include:

Using incompatible materials that do not adhere well, causing poor support or model quality.
Incorrect temperature settings causing clogging or poor extrusion of soluble filament.
Not calibrating dual extruders properly, leading to misalignment between model and support.
Removing supports mechanically instead of dissolving, which can damage the print.
Using too dense or too sparse support settings, affecting print stability or waste.

Always check filament compatibility and follow manufacturer guidelines.

ini

;; Wrong way: Using same extruder for support and model
support_enable = true
support_material = PLA

;; Right way: Use separate extruder for soluble support
support_enable = true
support_material = PVA
extruder_1 = PLA
extruder_2 = PVA

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Quick Reference

Step	Action	Tip
1	Load main and soluble filaments	Use PLA for model, PVA or HIPS for support
2	Enable supports in slicer	Set support material to soluble filament
3	Set correct temperatures	PLA ~200°C, PVA ~215°C
4	Calibrate dual extruders	Ensure alignment for clean prints
5	After printing, dissolve supports	Use water for PVA, limonene for HIPS

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Key Takeaways

Use a dual-extruder printer or multi-material setup to print soluble supports.

Select compatible soluble filament like PVA or HIPS for easy removal.

Configure slicer to assign supports to the soluble material and set correct temperatures.

Dissolve supports in the recommended solvent instead of removing them manually.

Calibrate extruders carefully to avoid misalignment between model and supports.