Spray adhesive for 3D printing: why the first layer determines the success of your print
If you've been 3D printing for a while, you know it well: the first layer is the moment of truth. That's where it's decided whether your print will become a perfect part or a pile of crooked filament to throw in the bin.
Warping, sudden detachments, lifted corners, parts shifting halfway through the print: in the vast majority of cases, all of this depends oninsufficient adhesion between the filament and the build plate. And the solution isn’t getting luckier, but having the right tool.
That tool is called 3Dbooster Lock, and in this article I’ll explain why more and more hobbyists, professionals, and companies in Italy are choosing it for their prints.
The problem that keeps you up at night: warping and detachment from the bed
Let’s start with the real pain that every maker knows:
- you open the printer in the morning and find a “spaghetti monster” instead of your part;
- the corner of your ABS has lifted 3 millimeters halfway through the print;
- you spent 12 hours printing and 200 grams of PETG for an unusable prototype;
- you try again, change the settings, and fail again.
All of this comes with a cost that isn’t just the filament: it’s time, electricity, and frustration.
A stable first layer is the foundation of everything else. If that fails, the print is compromised. Period.
What is 3Dbooster Lock and why it’s different from DIY solutions
Maybe you’ve already tried the classic alternatives: hair spray, glue stick, Kapton tape, adhesive sheets. They work… halfway. The problem is that they have to be applied every time, they get dirty, leave annoying residues, and often aren’t enough with technical materials.
3Dbooster Lock is an aerosol spray adhesive specifically designed for 3D printing, made in Italy, that works intelligently with temperature:
- Above 45°C → it acts as an adhesion promoter, keeping the part firmly in place on the bed throughout the print;
- Below 45°C → it promotes release, allowing you to remove the part without forcing or damaging the bed.
This is a thermal behavior that generic solutions simply don’t have. And it has a very interesting side effect: for some TPU it’s used specifically to promote bed detachment (TPU adhesion is already abundant on its own, the risk is the opposite — the part that won't come off!).
Discover all the details and buy 3Dbooster Lock on the official shop: 👉 https://www.3dbooster.com/it/shop/3dbooster-lock-lacca-colla-stampa3d/
The feature that really makes the difference: it lasts for many prints
Let’s get to the economic point, the one that’s often overlooked.
Most 3D printing adhesives must be applied for every print. Every time. Spray, wait, repeat. Over time, that 10-euro can is gone in a month.
3Dbooster Lock works the opposite way: one single application lasts for multiple consecutive prints. You don’t have to spray it every time, only when adhesion starts to drop. Result:
- 🧴 one can lasts much longer → cost per single print drastically reduced;
- ⏱️ no prep before every print → turn it on and print;
- 🧼 less bed maintenance → fewer residues, less cleaning, less stress.
In the long run, it’s the most cost-effective choice in the category. It’s not the cheapest can to buy: it’s the least expensive to use.
Universal compatibility: from PLA to Polycarbonate
One of the reasons makers love it is its versatility. You don’t need one adhesive for PLA, one for ABS, one for PC. Just one, for (almost) everything:
✅ PLA — perfect adhesion eliminates detachment even on long prints; ✅ PETG — a material famous for "biting" the bed too much or too little: with Lock it stays stable and comes off without drama; ✅ ABS and ASA — the warping champions finally kept under control, even on large parts; ✅ PC, PC-PBT, PC-ABS — high-temperature technical materials, where weak adhesives give up; ✅ TPU — used to promote post-print release; ✅ other filaments — the formula covers virtually the entire FDM range.
The product is ideal for surfaces in PEI, glass and steel, the most common materials in modern build plates.
How to use 3Dbooster Lock: the 6-step guide
How to use it is very simple, but follow the order to get the most out of it:
- Thoroughly clean the build plate from dust and residues;
- Make sure the bed temperature is below 50°C;
- Spray evenly over the entire surface;
- Heat the bed to the printing temperature and start the job;
- At the end of the print, wait for the bed to drop below 45°C and remove the part easily;
- Clean with a sponge and lukewarm water to remove any residues.
💡 Practical tip: as with any aerosol product, always do a test on a small area of the bed the first time.
Who it’s designed for (spoiler: you)
- 🏠 Hobbyists and makers: no more overnight failures, print calmly even long parts;
- 💼 Professionals and prototypers: stable prints = less scrap = higher margins;
- 🏭 Manufacturing companies: reduce errors and material waste on repeated runs;
- 🎓 Schools, fablabs and makerspaces: the ease of use makes it perfect even for beginners.
Yes. In the world of FDM 3D printing, the terms "3D hair spray" and "3D glue" refer to the same category of products: spray or stick adhesives applied to the build plate to improve first-layer adhesion. 3Dbooster Lock belongs to this category, but with the advantage of lasting for more prints than most competitors.
Yes. The product is compatible with a wide range of filaments: PLA, PETG, ABS, ASA, PC, PC-PBT, PC-ABS and others. In the case of TPU, it’s not needed for adhesion (which is already naturally abundant), but it’s used specifically to promote release of the part from the bed once cooled.
Much less often than you think. Unlike hair spray or glue stick, 3Dbooster Lock lasts for multiple consecutive prints: just check first-layer adhesion and reapply only when you notice a drop in hold. This makes the can much more economical in the long run.
Very simple: a sponge and lukewarm water. The product is designed not to leave permanent residues on surfaces like PEI, glass and steel, unlike sheets and tapes that require peeling and solvents.