Which glue actually works best for assembling miniatures

You've got a sprue of parts, a tube of glue from the hardware store, and a nagging feeling that this is the wrong glue. It probably is. There isn't one best glue for miniatures, there's a best glue for the material you're holding, and mixing that up is how arms fall off two weeks later or how a resin base ends up smeared with dried adhesive. Once you know what each type of glue actually does, picking the right one takes about five seconds.

The short version: plastic cement is for plastic-on-plastic joints and gives you the strongest bond of the three, but it only works on plastic. Cyanoacrylate, better known as super glue or CA, bonds almost anything to almost anything and sets in seconds, but the joint is rigid and can snap if it takes a hit. Epoxy is a slower two-part glue that fills gaps and shrugs off stress, which makes it the right call for heavy metal models and resin kits with awkward, weight-bearing joins.

Plastic cement: strongest bond, but plastic only

Plastic cement isn't really glue in the way most people think about glue. It doesn't sit between two surfaces and dry into a hard layer. It contains a solvent that softens the surface of styrene plastic just enough to let the two parts melt into each other. Once the solvent evaporates, you're left with a single fused piece of plastic rather than two parts stuck together. That's why a well-made plastic cement joint is often stronger than the plastic around it. Snap a limb off an old plastic model at a cemented joint and you'll frequently find the plastic itself failed somewhere else first.

The catch is right there in the mechanism: it only works because both surfaces are the same plastic. Try it on metal, resin, or a mixed-media kit and nothing happens, because there's no plastic surface for the solvent to soften. It's also a poor choice for gap filling, since it's designed for tight, flush joints where two plastic faces touch directly. If you've got a wobbly, imprecise fit, cement alone won't bridge it, and checking fit and shaving down connection points before glue ever touches plastic matters more than usual; see how to assemble and prep a miniature for painting for the full rundown.

Plastic cement also has a working window: hold the parts together for a short count and don't shift them again until it's had a few minutes to firm up, or you'll get a visible seam instead of a clean weld.

Super glue (cyanoacrylate): fast and versatile, but brittle under stress

Cyanoacrylate, the stuff everyone just calls super glue or CA, works on an entirely different principle. It cures through a reaction with moisture in the air and on the surfaces you're gluing, forming a hard layer that mechanically locks the two pieces together. Because it doesn't rely on melting a shared material, CA bonds plastic to metal, metal to resin, resin to plastic, and pretty much any combination a mixed-media miniature throws at you. That versatility is why most painters keep a bottle on the desk at all times.

The tradeoff is brittleness. A cured CA joint is hard and glassy rather than flexible, so it resists gentle handling fine but can crack or pop apart under a sharp impact, like a thin sword arm bumped against a shelf edge. This is the classic failure mode for CA-glued weapons and other thin protruding parts. Pinning, drilling a small hole and running a length of wire through the joint before gluing, solves this for parts under a lot of stress.

CA also comes in different viscosities. Thin CA wicks into tight, well-fitted joints by capillary action and is excellent for plastic-to-metal contact points where the fit is already good. Gel or thick CA sits where you put it and is better for gap-filling or vertical surfaces where a thin formula would just run off. If a joint is loose or uneven, reach for the thicker bottle.

Epoxy: built for heavy metal and awkward resin joins

Epoxy is a two-part adhesive: a resin and a hardener that you mix together in roughly equal amounts right before use. Mixing starts a chemical reaction, and unlike CA, that reaction doesn't depend on ambient moisture, so epoxy cures reliably even in a joint with no air exposure at all. It also cures slowly by hobby standards, anywhere from a few minutes to several hours depending on the formula, which gives you a real window to adjust position before it sets.

That slow cure and the resulting bond quality are why epoxy earns its keep on heavier models. Metal miniatures have real mass, and a CA joint that's fine on a lightweight plastic figure can shear under the weight of a solid pewter torso. Epoxy's bond is tougher and more shock-resistant than cured CA, and because it starts as a paste rather than a thin liquid, it fills gaps between mismatched or oddly cut surfaces instead of requiring a perfect flush fit. Large resin kits with heavy, off-balance components (a big cloak, an oversized weapon, a base with a lot of extra resin bulk) benefit from that same gap-filling strength. Get the surfaces properly clean first, since mold release residue on resin is a common reason glue of any kind fails to hold; see how to wash miniatures before priming.

One downside: epoxy sets up in one batch, so a project needing several separate joints over a session means mixing small batches repeatedly, or racing the clock before it kicks off in the mixing well.

Comparing the three at a glance

Glue type	Works on	Bond strength	Cure time	Gap filling
Plastic cement	Plastic to plastic only	Very strong (fuses plastic)	Minutes to fully set	Poor, needs a tight fit
Super glue (CA)	Almost any combination	Strong but brittle	Seconds to a minute	Fair with thick/gel formula
Epoxy	Almost any combination	Strong and shock resistant	Minutes to hours	Excellent

Accelerator sprays: trading a little strength for speed

Accelerator, sometimes called kicker or activator, is a spray or brush-on liquid that forces CA to cure almost instantly instead of waiting on ambient moisture. It's genuinely useful when you're holding two fiddly parts in an awkward position and don't want to stand there for thirty seconds hoping they don't drift. A light mist near the joint, not soaking it, will set most CA bonds in a couple of seconds.

The tradeoff is that a joint cured this fast can end up slightly weaker and more brittle than one left to cure naturally, since the bond doesn't form as evenly. For anything under real mechanical stress, it's worth accepting the extra wait instead of reaching for the spray every time. Accelerator also has a sharp smell, so use it in a ventilated space and avoid spraying toward your face or hands.

Cleaning up excess glue before it sets

Squeeze-out happens to everyone: you press two parts together, a little bead of glue pushes out along the seam, and now there's a shiny ridge sitting right where a highlight line should go later. The easiest fix is to catch it while it's still wet. Keep a toothpick or the fine tip of a hobby knife within reach as you glue, and drag off any excess the moment it appears, before it has a chance to skin over.

If you miss that window and the glue has already gone hard, don't pick it off with a blade, since that usually gouges the plastic or resin underneath. Cured CA can sometimes be softened with a small amount of acetone on a cotton swab, applied carefully and only to the glue itself. Cured epoxy is much tougher to remove chemically, so prevention matters more than cleanup there. A slightly damp cotton swab run along a fresh epoxy seam right after joining the parts lifts excess before it cures.

Frequently Asked Questions

Can I mix plastic cement and super glue on the same model?

Yes, and most kitbashed or mixed-material miniatures use both. Use plastic cement for the plastic-to-plastic structural joints, then switch to CA for any point where plastic meets metal or resin, such as attaching a metal weapon to a plastic arm.

Is epoxy overkill for a small plastic miniature?

Generally yes. Epoxy's strengths, gap filling and shock resistance for heavy parts, matter most on metal and large resin models. For a standard plastic kit with a decent fit, plastic cement or CA will do the job faster and with less mess.

Why did my glued joint pop apart after painting?

Usually an oily or dusty surface the glue never truly bonded to, or a joint that took stress it wasn't built for; a thin CA-glued weapon arm is a classic culprit. Pinning that joint with a length of wire usually solves it for good.

Do I need to remove mold lines before gluing, or after?

Before, whenever you can reach them. Mold lines sitting right on a joint surface prevent flush contact, which weakens the bond no matter which glue you use. Cleaning them up first, as described in how to remove mold lines from miniatures, gives every glue type a better chance to hold.

What's the safest way to work with these glues?

Work in a ventilated space for all three, since CA fumes can irritate eyes and airways and epoxy fumes are unpleasant in an enclosed room. Avoid skin contact, especially with epoxy, which can cause sensitization with repeated exposure. Keep acetone or nail polish remover nearby for CA skin contact, and follow the manufacturer's safety instructions on the packaging, since formulas vary between brands.