gluing a spike back to speaker cabinet

bluemike · « **on:** 6 Feb 2017, 09:24 pm »

any suggestions on what glue to use to attach a spike to the bottom of the speaker cabinet

S Clark · « **Reply #1 on:** 6 Feb 2017, 09:28 pm »

probably any epoxy. Flat metal to flat wood surfaces? Is so, rough the metal surface with some sandpaper.

bluemike · « **Reply #2 on:** 6 Feb 2017, 09:40 pm »

yes epoxy works
the speaker material is stone
any specific epoxy you can suggest

sunnydaze · « **Reply #3 on:** 7 Feb 2017, 01:41 am »

I've used epoxy to re-attach metal threaded spike inserts into the bottom of speaker cabinets. The cab was MDF and it worked great.

Can't think of any reason it wouldn't work just as well into stone....or any material for that matter. I'm a big fan of epoxy, and have used it successfully on just about every material.

As far as epoxy type? I dunno, I just goto HD and get the bog standard kind in the two tubes that you mix together, resin and hardener. Store brand, Brand X, Gorilla brand.....they all work. Sets in about 5 minutes.

S Clark · « **Reply #4 on:** 7 Feb 2017, 03:17 am »

Quote from: bluemike on 6 Feb 2017, 09:40 pm

yes epoxy works
the speaker material is stone
any specific epoxy you can suggest

They will all work, but in the case of stone, the slower the set up time, the better penetration. Use any name brand. J.B Weld, Lock Tite, Bob Smith. Rough the surface of the stone as well as the metal with some sandpaper. Make sure the surfaces are clean- dust and grease free. Acetone is a good cleaner.

srb · « **Reply #5 on:** 7 Feb 2017, 12:32 pm »

I've been a J-B Weld user for many years and it's worked well for my applications.

I recently saw a test on YouTube comparing 6 different epoxies. https://www.youtube.com/watch?v=bM4IGweHT2k 4" cap screws with 3/8" heads were glued to an aluminum bar and both surfaces were prepared with sandblasting.

This test was a high leverage test, hanging different weights at the end of the bolts and increasing the weight until failure, although none of my applications had that kind of leverage applied.

Obviously the test didn't have the precision of a more carefully controlled laboratory test, but it was still interesting nonetheless.

I haven't used J-B Weld in some of the extreme applications mentioned by the manufacturer, such as gluing together a tractor hitch or an engine block. I'm a bit skeptical of those, particularly the engine block scenario where high heat is involved.

I do like the dual syringe applicators that result in a more accurate mixing ratio with less waste.

Steve