What's everyone's take on the recent microscopic investigation by Michael Fremer of stylus contamination by products like Onzow Zerodust ?

He says so, yes. He swears by Blu Tac. I really think it has to do with the surface tension of the Onzow goo. And that's not even addressing the residue Zero Dust leaves behind.
 
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Is the DS Audio gel pad very different from the Onzow?
I'm happy to go Blu Tac if this is recommended by someone in the know, but I bought my DS pad directly as a result of hearing Onzow was flawed.
 
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Is the DS Audio gel pad very different from the Onzow?
I'm happy to go Blu Tac if this is recommended by someone in the know, but I bought my DS pad directly as a result of hearing Onzow was flawed.
Beats me. But isn't the DS pad expensive? Blu Tac on a 5p coin seems the way to go as recommended by a senior engineer at SS. You can ask him yourself, if he doesn't mind me giving you his contact info.

PS, he just reminded me he's a senior engineer at SS, and not a tech. He has built every strain guage cartridge for the past two years. I remember about a year ago he was showing me measurements from his builds at close to 50dB channel separation.
 
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Sure Brian, expensive indeed...a badge of honour for this forum Lol.
Seriously, I'm not gonna say no to Blu Tac at a price of mere pennies if it comes highly recommended...and it seems it does.
 
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I'm bummed by this thread. I have only been playing clean records. As clean as I can get them. I have religiously dropped my stylus in Onzow before every side. After 6 months my Hana sounded horrible. I removed it and there was gunk stuck on the needle. It took quite a bit of time with a magic eraser to get it clean. I wondered how it got there. I guess I will toss my goo dot and try something else.
 
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Now all we need to be told is that ultrasonic cleaning is destroying our vinyl.
My Q at this point is whether the DS Audio gel pad is simply a variation, but just as risky, as Onzow.
 
I'm bummed by this thread. I have only been playing clean records. As clean as I can get them. I have religiously dropped my stylus in Onzow before every side. After 6 months my Hana sounded horrible. I removed it and there was gunk stuck on the needle. It took quite a bit of time with a magic eraser to get it clean. I wondered how it got there. I guess I will toss my goo dot and try something else.
Dump the Onzow now!
 
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And the DS Audio ST-50 in the bin too? Tbh, they look like identical, or at least very similar, products.
 
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And the DS Audio ST-50 in the bin too? Tbh, they look like identical, or at least very similar, products.
I don't want to speculate, and definitely don't think it's worth the risk. However, I think the DS goo is both thinner and firmer than the Onzow. If just the stylus gets "submerged", then it's probably safer. But this does not address the residue issue. So, again, not worth the risk in my mind.
 
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I'm just a tad skeptical Blu Tak doesn't leave any residue. Sure, it's not gooey and cloying, but it's still made of *stuff* lol. And *stuff* can extricate and then deposit.
Or is the Onzow (and DS) an issue primarily due to it's gooey, cloying nature?
Blu Tak's non gooey, but adhesive constitution means it isn't risky?
And it helps stick stuff to other stuff eg posters to walls, so it's the lack of gooeyness w Blu Tak, not the simple adhesiveness, that's the advantage?
 
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I'm seeing a user of Lyra SPT fluid, in conjunction with the Flux Demagnetizer that I use. This may be the path I go down, plus use of fine brush, and more consistent use of my DeGritter machine.
 
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Ask my buddy at Soundsmith these questions, Marc. You have his contact info now.
Sure, hopefully some people here also using Blu Tak will chime in.
 
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Hi,
Any chance you might have a link to share for your favorite brush???

Thank you,
Don
I wish I did - this one comes in the box with Shelter cartridges and I don't know where to source it. KAB sells a $2 brush that is quite serviceable; it's got way more bristles than I need or want, but can do all my usual cleaning motions. Go to their page and click the "Sound Accessories" link and scroll down; no direct link because their website was coded when Geocities was the Facebook of the internet.

 
I wish I did - this one comes in the box with Shelter cartridges and I don't know where to source it. KAB sells a $2 brush that is quite serviceable; it's got way more bristles than I need or want, but can do all my usual cleaning motions. Go to their page and click the "Sound Accessories" link and scroll down; no direct link because their website was coded when Geocities was the Facebook of the internet.

Thank you :)
 
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Of all the audiogon discussion on this topic, filtering out the usual repeated arguments, here is the ONE post I found extremely interesting - by user rickd1225:
I have a 47 year history in the chemical business, much of which has been involved in polymer chemistry. I have years of formulating and specifying both epoxy and polyurethane coatings, adhesives, sealants & elastomers, aka CASE chemistry. I am now retired.

The Onzow product is very likely to be a elastomeric polyether polyurethane. There would be no need for a fugitive plasticizer in this product as the urethane can be formulated as soft as the Onzow is. Unlike PVC used to produce records that does have a plasticizer. Polyurethanes are reactive 2 component chemistry consisting of the reaction between a Polyol (multifunctional alcohol, think -OH)and as stated it would be a polyether polyol. This is reacted with an aliphatic isocyanate to form the clear water-white polyurethane. This reaction is Not Reversible. The formula would also likely be over indexed with the Isocyanate. Any excess isocyanate not crosslinkied with the polyol would be further reacted with atmospheric moisture, water is H-OH, so it has the -OH available to react. Therefore, there is no fugitive material available to “gum” up the stylus/cantilever. Now the vinyl records do have additives than can be fugitive that could gum up the works. Without chemical analysis we do know what the deposits are. That needs to be determined before jumping to any conclusions.

In regards to using wet cleaning of styli using alcohol or other solvent based solutions this should not negatively affect the epoxy adhesive used to bond the Diamond to the cantilever. Especially if using the recommended drop of solution. Even direct full immersion would take days, weeks and possibly months to have any deleterious effect and even then removing from immersion it could recover. A correctly formulated epoxy adhesive is resistant to solvents except for the most aggressive types like methyl chloride. No manufacture would use this aggressive of a solvent in a stylus cleaner.


I am currently an Onzow user. I have not noticed any deterioration in sound quality since beginning to use it about 1 year ago. I don't have access to a high resolution microscope to inspect my stylus to see what might be there.


I don't have a dog in the fight, but my chemical curiosity has me wondering what is happening. I await further investigative results to determine what is really going on.

TLDR; material from the vinyl records themselves is more likely to be the source of the pictured stylus "gunk" than an Onzow / DS Audio product, unless they egregiously botched the gel formulation.
 
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