piezo glue

[hufftoast]

In the old forum, there were different ways discussed to glue piezos together, which ended up being the best way to glue them together

[CBIERN]

Just as Bill suggested using medium body PVC cement. I built a gluing jig using hardboard that held all four assemblies of horns pretty tight and just barely wet the cut edges of each horn with the cement (as you don't want squeeze out on the faces). On the backs of the horns I cut strips from the scraps of horn and glued them in as reinforcement at Vee of the joints and across the sides. Probably overkill but once the assemblies had set they withstood some pretty rough handling with no hint of coming apart. I still think that when I build more 250s I'll hotmelt the completed horn arrays to a frame of 1/4" ply and then screw the assembly to the speaker so that it clould be removed easily for repair.

[Art Coates]

I agree with the frame idea - I'd also like to recess them in that frame since one good knock and they shatter :/

[ebinary]

In the old forum, there were different ways discussed to glue piezos together, which ended up being the best way to glue them together

I had great success with ABS glue (also in the pipe gluing section of Home Depot). Its black (some pvc is purple) and the results seem strong and resilent.

I also recommend a frame if possible. My array is screwed in, but you can't tighten thing down much without risking damage.

Eric