Cone Repair on 602B & 604B

Hi James,

We don't want him to use caulk so it's a bit of a non-issue but a bit about a feathered edge: It's all about the substrate preparation, the sealant being applied, the applicator's knowledge and the tooling of the product. You're right, the average Joe should avoid feathering but we have offered Scott a means of dealing with those potential concerns. A cutback will penetrate the paper pulp better than straight up and if it is cleaned properly first, a feathering won't be a problem here. Working in and around a surround can be awfully tricky to mask off and it's taking at chance at delaminating some of the cone if you use anything other than frog tape.

I think he'll be just fine. :)

Cheers.

I picked up the Best-Test rubber cement and Bestine thinner, and now just need to get some small brushes that will tolerate the acetone. Then on to some clear nail
polish and some practice comes and I should be good to go.

Scott

Quote:

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Originally Posted by Cal Weldon

Hi James,

Hi James,

We don't want him to use caulk so it's a bit of a non-issue but a bit about a feathered edge: It's all about the substrate preparation, the sealant being applied, the applicator's knowledge and the tooling of the product. You're right, the average Joe should avoid feathering but we have offered Scott a means of dealing with those potential concerns. A cutback will penetrate the paper pulp better than straight up and if it is cleaned properly first, a feathering won't be a problem here. Working in and around a surround can be awfully tricky to mask off and it's taking at chance at delaminating some of the cone if you use anything other than frog tape.

I think he'll be just fine. :)

Cheers.

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Quote:

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Originally Posted by slial

I picked up the Best-Test rubber cement and Bestine thinner, and now just need to get some small brushes that will tolerate the acetone. Then on to some clear nail
polish and some practice comes and I should be good to go.

Scott

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Take some pictures and post up your work so others can benefit!

Quote:

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Originally Posted by Alien_Shore

Take some pictures and post up your work so others can benefit!

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I will definitely snap some shots of the work.

Is there any more input on the tissue paper itself? Cal recommended facial tissue, and I was just curious about the options here, especially since it would be nice to go gray/black to match it up as best as possible.

Scott

Quote:

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Originally Posted by slial

I will definitely snap some shots of the work.

Is there any more input on the tissue paper itself? Cal recommended facial tissue, and I was just curious about the options here, especially since it would be nice to go gray/black to match it up as best as possible.

Scott

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I've heard of cigarette paper being used for repairs .


:)

Toilet paper can be used as well as facial tissue in and around the surround. If you are on the cone, then writing paper, rolling paper or something equally stiff may be used. As far as colour matching, I wouldn't worry, the patches tend to become rather translucent when the rubber cement goes on. Try it on a scrap piece first.

Any update on the repair?

Instead of rubber cement Cal, what about product like "Super RC Z 56 Glue, made by J and Z Products, Harbor City , CA - and also other manufacturers, to attach canopies on Radio Controlled airplanes?? Designed to withstand shock and vibration !!

Ever try that ? I have, a lot.

It dries clear and glossy, is flexible, and it is "cut" with water so you can apply with an artist's brush - as much or as few THIN coats as you need.

I use paper from inside a cigarette box, or, model aircraft wing paper covering, as the patch. I think any of the Z-56 type glues are superb, easy to apply with minimal added mass, and it always remains flexible. Often, when applied from the rear of the cone, you don't see any ugly looking repair !!

Surely "I" can not be the ONLY person who uses this for cone repairs. If you haven't used it, get a bottle and TRY it out. I love the finished results.

Comments from fellow users are welcomed !! Cal, try it and let us know how you like it.

Does this post of mine help anyone ??

Jeff Medwin

Hi Jeff,

Sounds like a good one. Is it flexible enough to use on the surrounds as opposed to the cones? That's why I suggested the rubber cement. I have used it with good results. I hope someone else here has an opportunity to try the product you recommend. TBH, I have enough drivers to last a lifetime so if I have one with a tear, I'm just as likely to give it to someone else to fix. Not trying to be a snob or anything - just saying. That's what an addiction is all about.

- Buy
- Buy more
- Buy too much
- Admit you have a problem
- Buy more to help comfort yourself.

My name is Cal and I'm a Speakerholic. :-)

- - - Updated - - -

I just did a little research. It appears the RC56 is another name for Tacky Glue. It's a modified PVA. I am familiar with it and yes it would be great stuff for drivers. Now if it is better than rubber cement on a surrounds, who knows? Interesting to hear opinions.

Cal,

I think it is very flexible, and I have used it on surrounds. I am guessing I was told about this by Don Davis, the brilliant ex-Austin Texas Vintage speaker repair guy, sometimes known as Dr. Field Coil.

I do not know what "tacky glue" is, and so I am not particularly sure if you have it right. This is water soluble, dries see-through clear and with a sheen, and it is for RC airplane Canopies mostly. At least two hobby industry companies make it. I really like it...no problem on surrounds, the paper could crumble away and it will remain and be flexible I have been told. Surely others know about using this product.

Jeff Medwin