One of the most common problems in 3D printing is the first layer peeling off from the print bed. This leads to ruined details, wasted time, and excessive filament consumption. The solution usually comes down to improving adhesion through special adhesives for 3D printing. They help the first layer to "stick" securely to the bed, reduce warping, and increase the chances of the model being successfully completed. In the following lines, we will briefly discuss what 3D printer adhesives are, when they are used, what types exist, and how to choose the right one for different filaments and beds. Finally, you will find links to specific products available in our store that can solve the most common peeling problems.
Why and when is glue used in 3D printing
Not every project and not every combination of printer and filament requires glue. Ideally, you have a well-leveled bed with a quality surface (PEI), and the material (e.g., PLA) is relatively easy to adhere. Under such conditions, you can manage without glue. However, in many real situations, especially when:
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Materials prone to deformation: ABS, ASA, Nylon, or larger PETG parts often warp at the edges. The adhesive provides stronger adhesion and helps prevent the model from peeling off.
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Smooth beds: Glass, mirror, aluminum plate without special coating – PLA can slide on them, while ABS almost always peels off. Here, the glue is a "savior" for a stable base.
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Non-standard or difficult filaments: Nylon, PC, PP, and other engineering materials usually do not adhere well directly and have significant shrinkage upon cooling.
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Protective layer: When using PETG on PEI, the use of adhesive can prevent excessive sticking and damage to the surface. Thus, the adhesive acts as a "separator".
Overall, if you frequently encounter issues with the first layer peeling, 3D printing glue is a quick and effective solution.
Main types of boards (beds) and interaction with adhesives
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Glass/mirror: Smooth and easy to clean. PLA may stick if the glass is very well cleaned, but with ABS or PETG, a thin layer of glue is almost always recommended.
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PEI sheet: Provides strong adhesion, especially with PLA, ABS, and PETG. The adhesive is sometimes used for easier removal of the part (with PETG) or for difficult materials like Nylon.
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BuildTak/Ultrabase/textured surfaces: They are often sufficient for PLA and PETG without additional glue. For more stubborn materials, it is still good to have a glue stick on hand.
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Aluminum plate (uncoated): It is rarely left "bare" because the adhesion is weak. If you have nothing else, glue is essential for most filaments.
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Garolite (FR4): A special hard surface, preferred for Nylon, but many people combine Garolite with additional adhesive for extra security.
Types of adhesives for 3D printing
1. Spray adhesives
They represent an aerosol that provides quick and even application. An example is 3DLAC spray – a popular choice for ABS, PETG, PLA. The advantage is strong adhesion on a heated bed, and after cooling, the model often releases easily. However, sprays can stain surrounding parts, so it is recommended to spray on a removed bed from the printer or in a well-protected area.
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3DLAC Spray 400ml – classic strong spray for various materials.
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3DLAC Mini 75ml – a compact version, convenient for transport.
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3DLAC Plus 100ml – a slightly stronger formula and convenient size.
2. Glue stick
This is a solid PVA glue, similar to office glues, but often formulated specifically for 3D printing. Many users simply take an office stick (UHU, Kaly), but there are also special variants like 3DLAC Stick 80ml. The advantage is that it applies precisely, without splashes, and is non-toxic. When printing with PLA, PETG, and even ABS on glass, this is a quick and easy method to improve adhesion.
3. Writing instruments (applicators)
These are liquid adhesives in a convenient packaging with an applicator. A typical example is DimaFix Pen. When the bed is heated above 50°C, the adhesive "activates" strong adhesion, and when the temperature drops, the print is released more easily. The pens are very convenient for application and are preferred for materials like ABS or Nylon, where higher temperatures are required.
4. Specialized adhesives for Nylon
Nylon is particularly difficult to bond. There are products specifically designed for it – for example, 3DLAC 3D Nylon 30ml. These solutions stabilize the first layer and drastically reduce warping during cooling.
How adhesives are used in practice
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Preparation of the bed: Clean it of dust and debris (with warm water, isopropyl alcohol, or a mild detergent).
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Application:
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With spray: Shake the bottle, spray from ~20 cm onto a cold or slightly warm bed, in a thin layer.
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With the stick: Apply as if you are coloring the surface. If there are streaks, gently smudge with your finger or a damp cloth.
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When writing: Shake, apply evenly with the applicator. Usually, the glue dries quickly, especially on a warm bed.
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Print: Start the printing. When heated, the glue becomes stickier and helps the first layer adhere firmly.
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Removing the detail: Wait for the bed to cool completely. Some glues "release" the model automatically after the temperature drops. If it doesn't happen, you can gently lift it with a spatula or moisten it if it's PVA-based.
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Cleaning: After several seals, residues can accumulate. Most often, water is sufficient for PVA. For other formulations, you can use alcohol or a specific solvent.
Tips and selection according to the printing material
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PLA: Usually easier to glue. When using glass and lacking a special surface, use a stick or light spray.
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ABS/ASA: The problem is with the distortion during cooling. A heated bed (90°C+), covered with spray (3DLAC, Dimafix) or glue pen is mandatory. This will drastically reduce the warping effect.
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PETG: A glue stick is often used on glass. On PEI, the glue acts as a separator to make it easier to remove the model and to avoid damaging the surface.
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Nylon: Very difficult to adhere to glass. Specialized products (3DLAC 3D Nylon) or pens (Dimafix) are the best solution.
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Flexible (TPU, TPE): They have good natural tack, but if you feel slipping, try a stick adhesive.
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PC, PP and other engineering: Look for adhesives formulated for high temperatures and strong adhesion (Dimafix, Magigoo PC/PP).
How to choose the right 3D glue according to your needs
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Filament material: PLA, ABS, PETG, and Nylon are the most popular, but they have different adhesion requirements. For more demanding materials (ABS, Nylon), consider using spray or a pen.
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Bed surface: Smooth glass almost always requires adhesive, PEI often allows printing without adhesive (but sometimes it is needed for protection or easier removal).
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Size of the detail: The larger and sharper-edged the detail, the more it can lift. For large projects, opt for a reliable adhesive like 3DLAC Plus or Dimafix Pen.
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Convenience: The spray covers the entire bed quickly, but it may stain the surrounding area. The glue stick is clean to apply, but wears out faster. The pens combine the advantages of liquid glues with precise application.
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Budget: A regular office stick is the cheapest, but for long-term use or specific materials, it's better to get a special glue that will solve the problems more reliably.
Adhesives for 3D printers are an essential tool for anyone looking to reduce failed prints due to peeling. The choice depends on the material, the surface of the bed, the size of the model, and your personal preferences. For the most common scenarios (PLA on glass or PETG on a smooth bed), even a standard PVA stick works excellently. For more demanding projects with ABS, ASA, or Nylon, strong sprays (3DLAC, Dimafix) or temperature-activated pens are the preferred choice. Whichever option you choose, pay attention to regular cleaning of the surface and proper application of the adhesive to achieve optimal results. This will ensure a firmly adhered first layer and a successful 3D print every time.
