Dust Cap glue?

[BrentEvans]

What type of glue should be used to attach dust caps to drivers with paper cones? I have a pair of drivers that needs a minor repair (already have the dust caps).

[Hackomatic]

Should be used, or can be used?!
I used the same water soluable glue that came with the recone kits I bought for the surround, the spider, and the dust cap. It's the only glue they sent so I figured that's what they intended. I'd say any good adhesive that doesn't expand while curing should be fine . . i.e no Gorilla. If it's a heavy pounding sub, maybe step up to epoxy. If it's something less, I'd think Titebond wood glue or similar would be just fine.

Oh . . and no Mucilage!

[Bill Fitzmaurice]

What type of glue should be used to attach dust caps to drivers with paper cones? I have a pair of drivers that needs a minor repair (already have the dust caps).

Superglue gel. The best way to do it is to put the driver atop a lazy susan/turntable. Tack the cap in place with two or three drops, then spritz with cure accelator. Let the accelerator evaporate. Put a bead of gel around the joint, holding the applicator in place, rotating the driver. Spritz with accelerator. Done.

[byacey]

I would be hesitant to use super glue as it is very brittle (inflexible) when cured. In the old days we used a black MEK based 3M product that was thinned so it would flow readily out of a fine tip squeeze bottle, about the viscosity of liquid honey . However, this glue has fallen into disuse because of the toxicity.

I've also used the latex based glues like JBL supplies with their kits, and it seemed to work well enough. You could also use Goop Glue with a very fine nozzle if it's a fresh tube, but again you're back to the toxic fumes issue.

In addition to the good advice of using a turntable given by Bill, it's also a good idea to weight down the cap with something while gluing. We used to use An EV coil shim, which was just a fancy aluminum ring with a bit of weight to it, but really you could use anything that hold the cap tight against the cone. A half used roll of electrical tape comes to mind.

[Bill Fitzmaurice]

I would be hesitant to use super glue as it is very brittle (inflexible) when cured.

It's what many driver manufacturers use. The dust cap to cone joint should be inflexible.

[byacey]

Is that right? I haven't done much re-coning for some time now. In the past, it was usually a contact cement type glue that was provided, except for EV, who provided a black MEK based glue in a quart can that wasn't very viscous. On the EV speakers, the coil former to cone was epoxied, and the dust cap was glued in using their black glue. I suspect it wasn't anything other than 3M 4799.

I have seen the odd cap that would rattle at certain frequencies when epoxy was used.