Gluing Piezo Array

The Jack of All Trades pro-sound cabs.
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nola50
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Re: Gluing Piezo Array

#16 Post by nola50 » Tue Jan 10, 2017 2:01 pm

We've decided to bypass Mickie D's as much as possible, even to redirecting the grand children to Chick Fil A instead!

But Mickie D's has all the cool toys! :lol:

Bruce Weldy
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Re: Gluing Piezo Array

#17 Post by Bruce Weldy » Tue Jan 10, 2017 2:11 pm

Bill Fitzmaurice wrote:
dswpro wrote:the PL was washed away by the french fry grease
Imagine what it's doing to your innards. :roll:
Why, it's cleaning them out of course! And everyone wants clean innards, right?

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

nola50
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Re: Gluing Piezo Array

#18 Post by nola50 » Mon Jan 16, 2017 8:39 am

When gluing the array together, what do you put on the wood to keep them from sticking to the jig?

Bruce Weldy
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Re: Gluing Piezo Array

#19 Post by Bruce Weldy » Mon Jan 16, 2017 9:02 am

nola50 wrote:When gluing the array together, what do you put on the wood to keep them from sticking to the jig?

wax paper

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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whines
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Re: Gluing Piezo Array

#20 Post by whines » Tue Jan 17, 2017 10:53 am

Cling film works too!
2xJ15, THT, 4xT39 3012 (2x15", 2x20"), 2xSLA Pro, 2x short SLA Pro (Dayton), W6

nack
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Re: Gluing Piezo Array

#21 Post by nack » Tue Feb 21, 2017 7:12 pm

nola50 wrote:...
While perusing "CA" Glue, I see that there's YouTube videos of a common practice to apply the glue and then baking soda to fill in the cracks. Anyone use that concept?
That is an old luthier's trick for fixing plastic guitar nuts.

nack
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Re: Gluing Piezo Array

#22 Post by nack » Tue Feb 21, 2017 7:16 pm

nola50 wrote:When gluing the array together, what do you put on the wood to keep them from sticking to the jig?
I use blue painter's tape, but wax paper is probably better.

nola50
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Re: Gluing Piezo Array

#23 Post by nola50 » Mon Mar 06, 2017 7:12 am

The wax paper tears and leaves little pieces.

I'm guessing that unless you have absolutely perfect edges that seal, this is a tough row to hoe.

I'd be interested to know what techniques others are using the trim the Piezos. If I had a CNC machine, that'd be my direction.

:cry: :oops:

Bruce Weldy
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Re: Gluing Piezo Array

#24 Post by Bruce Weldy » Mon Mar 06, 2017 9:55 am

nola50 wrote:The wax paper tears and leaves little pieces.
:
:confused: How does that happen? If you built the jig, the paper just lays over the top of the jig, then the pieces are laid on the top as they are glued.
I'd be interested to know what techniques others are using the trim the Piezos. If I had a CNC machine, that'd be my direction.
Most folks build a table saw jig. Some have used a jig with a circular saw and some a miter saw.

Search the forum - there should be plenty of examples of the jigs out there....there used to be.

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

nola50
Posts: 288
Joined: Sun May 14, 2006 11:58 pm
Location: Baton Rouge, LA

Re: Gluing Piezo Array

#25 Post by nola50 » Mon Mar 06, 2017 10:02 am

Yes, I built the jig and used it with a fine blade. I might search for a better blade to use on the table saw.

ctmullins
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Re: Gluing Piezo Array

#26 Post by ctmullins » Mon Mar 06, 2017 10:08 am

Documented mine here: http://billfitzmaurice.info/forum/viewt ... 15#p263644

The first array was pretty rough. I cut and glued the second one yesterday, and it's much better. Your cutting technique improves with practice. But I still have glue seeping through to the front side. So that'll be sanded smooth and gone over with a bit of black dye. Worked well for my straight arrays!
-todd

5 and 8 string bass | SansAmp | Crown | 2 x J110
2 x W8 panel-mount
2 x T39 24" 3012LF
4 x OT12 2512 melded (finally done!)

Bruce Weldy
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Re: Gluing Piezo Array

#27 Post by Bruce Weldy » Mon Mar 06, 2017 12:13 pm

ctmullins wrote:But I still have glue seeping through to the front side. !
One more compelling reason for using grills with foam. A little more cost, but the inside is hidden and it's a more professional look.

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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DJPhatman
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Re: Gluing Piezo Array

#28 Post by DJPhatman » Tue Mar 07, 2017 1:21 pm

Bruce Weldy wrote:One more compelling reason for using grills with foam. A little more cost, but the inside is hidden and it's a more professional look.
As a plus, it also forces the look-ee-loos to ask you about your wonderfully awesome sounding speakers. Which gives you the chance to tell them you built them (with a sprinkle of pride) and where they can find the plans. Spread the love! :wink:
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice

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