Introduction
If you're working with 3D printed props — whether from 3DCre8Design or your own prints — you may need to bond parts together depending on the design. This guide covers the best adhesive options for PLA+ and when to use each.
Not sure whether your kit needs glue? Check the product listing — each one clearly states whether it's a push-fit or glue-required build.
Push-Fit vs Glue-Required: What's the Difference?
Push-fit designs are ideal for beginners and experienced builders alike. Parts connect using precision-fitted rods and friction — no adhesive needed. Once assembled, the result is a solid, sturdy model that holds together reliably without any mess or drying time. These are clean, reversible builds that are great for display or cosplay.
Glue-required designs are more complex builds where parts need to be permanently bonded for structural integrity. These kits are clearly labelled on the product page, so you'll always know what you're getting before you buy. If your kit requires glue, the options below will help you choose the right adhesive for the job.
Option 1a: Cyanoacrylate (Super Glue) — Standard
Super glue is the most commonly used adhesive for 3D printed PLA+ parts. It bonds quickly, dries clear, and is widely available at most hardware and hobby stores.
Best for: small joins, cracks, fine details, and repairs.
Tips: Use gel super glue for better gap-filling on slightly imperfect surfaces. Apply accelerator spray to speed up cure time significantly. Avoid getting it on your fingers — it bonds skin instantly.
Limitations: Brittle under stress. Not ideal for large, load-bearing joins on heavy props.
Option 1b: KRAFTPROTZ Super Glue — Our Recommendation
For prop building specifically, we recommend KRAFTPROTZ super glue. It offers excellent bonding strength on PLA+ with a reliable, consistent cure — making it our go-to choice for glue-required kits and permanent fixes on push-fit builds.
Best for: all PLA+ prop joins where you want a dependable, strong bond without fuss.
Tips: Use sparingly at key join points for a clean finish. Works particularly well when combined with an accelerator spray for faster cure times.
Why we recommend it: Tried and tested in our own workshop — it's the adhesive we trust on our own builds.
Option 2: Two-Part Epoxy
Epoxy adhesive creates extremely strong, rigid bonds that outperform super glue on larger or heavier connections. Two-part epoxy (resin + hardener) provides structural strength that PLA+ itself sometimes can't match.
Best for: large prop sections, weight-bearing joins, and permanent assembly of big builds.
Tips: Mix thoroughly. Clamp or hold parts in position while curing. Most 5-minute epoxies are sufficient for prop work; 24-hour epoxy is stronger but less convenient.
Limitations: Messier to work with. Hard to reverse once cured.
Option 3: Plastic Weld / Solvent Cement
Plastic welding solvents work by chemically melting the surfaces of two PLA+ parts together, creating a molecular bond rather than a surface adhesion. The result is extremely strong and, when done well, nearly invisible.
Best for: clean joins where you want the bond to disappear visually.
Tips: This works better on some PLA formulations than others. Test on a scrap piece first. Apply sparingly — a little goes a long way.
Option 4: Soldering Iron Welding
Using a soldering iron to melt and fuse PLA+ parts together is one of the strongest bonding methods available — and it requires no adhesive at all. The iron melts the plastic at the join point, fusing the two surfaces into a single piece as it cools.
Best for: structural joins on large or heavy props where maximum strength is needed, and for filling gaps or cracks by melting in scrap PLA filament as filler.
Tips: Use an old or dedicated soldering iron — not one you use for electronics, as PLA residue will contaminate the tip. Work in a well-ventilated area as melting PLA produces fumes. Keep the iron moving to avoid burning through the surface. A lower temperature setting gives you more control.
Limitations: Requires practice to get clean results. The join area will need sanding and priming before painting to hide the weld marks. Not suitable for fine detail areas.
Best used alongside: our Sanding 3D Prints Guide to clean up the weld area before finishing.
Our Recommendation
For most prop work with PLA+:
- Small repairs and detail joins — standard gel super glue or KRAFTPROTZ.
- Large sections and structural bonds — two-part epoxy or soldering iron welding.
- Permanent invisible joins — plastic weld solvent.
- Maximum strength, no adhesive — soldering iron welding with sanding to finish.
Always check your product listing first — if it's a push-fit kit, you won't need any of the above. But if you want to permanently set your assembled build, a small amount of KRAFTPROTZ or gel super glue at key join points is all you need.
Browse our full range of prop kits at New Arrivals or our Best Sellers — made to order, shipped from the UK.