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You need a RCM...for under $50

GreatTone

Super Member
I know, another record cleaning machine (RCM) thread. But I am so excited about my DIY RCM, that I wanted others who might be on the fence to take the plunge. And you can make one for $50, max.

I have known I needed a RCM for a long time. I have a number of records that had a huge amount of surface noise -- crackling that was so loud, it actually competed with the level of the music. Some of these were thrift store finds that I thoroughly cleaned in the sink, but were still noisy. Some were old albums from my collection. Some were even $50 brand new audiophile reissues that arrived crackling like crazy. When I would come across an album like that, I suspected that a RCM would fix it, so I just put them away until the day I got one.

Now I have one and the results are beyond what I hoped.

I have been planning to build a RCM for some time, as I don't have $500+ to spend on a VPI or similar machine. I scrounged an old vacuum cleaner from the curb for the motor, and I was going to build it into a box with a junked turntable for the platter. But I could never seem to get around to it. So finally last weekend, I got sick of the crackling and went to Sears and bought their cheapest, smallest ShopVac for $30. Then I pulled out an old turntable I had in the attic. The most time-consuming part was modifying the vacuum's crevice tool to become a record-vac.

I cut the end off the crevice tool with a hack saw, then filled the opening with a piece of scrap. I then filled the end with epoxy, making sure to seal it. I let it dry, and here is what I ended up with:

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Here is a shot of the sealed end:

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I cut a 1/16th" slot along the edge using a cutoff wheel on my Dremel tool. I have some extra pads from my Mobile Fidelity record cleaning brush, so I cut out thin strips and affixed them to the sides of the slot. After that, I was pretty much done.

I set up the old TT in my shop, which is just a few steps from my listening area. The vac sits nearby. For cleaning fluid, I'm using MoFi's record wash -- I have both the super deep clean for a first step on really dirty records, and the regular wash for a second step, or the only step on records that aren't that dirty. You could make up your own fluid using a DIY recipe, using distilled water and a little Dawn detergent. Don't use any alcohol -- you only need that for evaporating purposes, which isn't relevant when you're vacuuming up the liquid. Also, the alcohol will dissolve the glue that holds the velvet cleaning pads on.

I have an old DiscWasher brush that I use for the first step -- the super deep cleaner -- if needed. I use my MoFi brush for the second step, which keeps the brushes separate, so the final cleaning brush isn't contaminated with too much dirt. You could also use a clean paint brush for applying the liquid.

The cheap ShopVac works great. It has just enough power to clean virtually all the liquid off in one pass. A couple of more passes around gets any remaining traces of fluid.

The results have been nothing short of spectacular. The first record I cleaned was a Speakers Corner jazz reissue that I bought new last year: Oliver Nelson's "Blues and the Abstract Truth." When I got it, it crackled like crazy. After cleaning, the background was dead silent.

Next up was a Nat King Cole reissue from Analogue Productions. This was a $50 45 rpm reissue, and it also crackled like mad from the first play. I had already returned one copy because of severe warping, so when I got this one, even though it was super noisy, I just put it away, hoping that someday a RCM would fix it. And it did. Dead silent backgrounds.

I also had a number of fairly rare jazz albums I'd found at the thrifts, which looked very clean and undamaged after a sink cleaning, but which had horrible surface noise. There was so much crud in the grooves, even after a thorough sink cleaning, that the stylus would dredge up a ball of fuzz after literally 30 seconds of play. After vacuuming, I played the whole side, and nothing came up on the stylus. Nice quiet backgrounds, clear, undistorted music.

Of course albums with groove damage are not going to be fixed by a RCM. Groove damage usually has the effect of creating distortion that increases with the volume of the music. It can also create crackling like dust, but is from fine scratches in the grooves. No RCM will fix those. But I've found some albums that I was sure were groove damaged, but they played great after vacuuming.

Even albums that didn't seem to have any audible problems benefit from at least a single pass with the RCM. Every time you play an album, some dust and vinyl flecks end up in the grooves. After vacuuming, the backgrounds are just so completely silent that it's kind of astonishing. Plus, there's more detail, better separation between instruments -- more of everything you look for in vinyl.

Listening to the first few albums after cleaning them, all I could think was, why didn't I do this sooner? Now I know why so many people say that a vacuum RCM was the biggest upgrade they made on their vinyl rigs -- making a bigger difference than a new stylus, cart, phono stage, etc. It's true. You need a vacuum RCM.

The biggest expense is the $30 shop vac. You can find an old turntable for five or ten bucks. It doesn't even have to work -- you can spin the platter by hand while you hold the brushes/vacuum tool. Considering how few spins you need for the whole process, it's really not a big deal. My tt works, but I still just spin it by hand.

This RCM won't win any beauty prizes, but it cleans records beyond what you probably thought was possible.
 
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Go for it! Once you get your setup in place, it only takes about 3 minutes for the dirtiest records (clean with super record fluid, then twice with the regular fluid). For already clean records, the single pass takes maybe a minute. It often took longer than that using a DiscWasher or similar brush, when you consider how much fiddling and examining it took to really get it clean. And of course it never was clean down in the grooves. It takes a vacuum to get that stuff out.

As has been pointed out in other threads, if your album has a big static charge, it will attract a bunch of dust between the RCM and your turntable. I have one of those carbon fiber brushes, and a couple of passes with that drains most of the static.

Next on my DIY to-do list is making a zero-stat device using an old lighter, modified to use the piezo crystal for anti-static duty instead of creating the spark.
 
It's the inspiration for my version, which I have now made from 3/4" PVC (hot water variety).

I've made two "enhancements."

I drilled a hole in the PVC to fit over the spindle. That allows me to control the placement of the wand and the pressure applied with one hand, leaving the other hand free to apply fluid.

I've experimented with several method of applying fluid -- nylon brushes and the like. What works best for my garage sale records is a microfiber cloth. I dip it in a bowl of alcohol and distilled water and apply it liberally, moving back and forth across the record.

I run the suction at the same time, so the water doesn't stand on the record.

My second improvement is to drill holes through the wand and its size adapter, so I can control the amount of suction. I use a mini-ShopVac, and adjust the suction just below the level where it tries to lift the record.

Even my worst records are now enjoyable, although not as clean as the best new ones. Some I've vacuumed several times, and they continue getting better.

I bet these homemade cleaners work as well as the expensive ones.
 
This was inspired by the homemade wand. Somehow everything I make winds up being made from PVC. the brushes are paint spreaders. I've tried several things, and that seems to work well. The wand doesn't fit the vacuum hose tightly, and doesn't have to. When the machine is on, it seals and holds just fine.

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That is a great idea^... PVC is a great material to build with. The possibilities are near endless. I am going to make a machine since I have found sink washing to work fine..with a vacuum it will even be better.

Great ideas guys. There are no patents on these devices.. correct? :D
 
Great ideas guys. There are no patents on these devices.. correct?

Not for DIY, but I might be a little ticked if someone got wealthy selling them.:D

I'm thinking when I get the bugs out I might sell a few on the 'bay, just to get some feedback.

They're not difficult to make, but if you have to buy a Dremel, it eats into the cheap. I suspect mine could be mass produced with a drill press and a cutting bit.
 
As long as I'm giving a free pass to AK members on the patent issue, i might as well save a few minutes of searching through Lowes PVC bins. The long tube is the hot water type, and the size adapter is a hot to cold adapter.

I wasted nine bucks on a Shop Vac wand that could be cut down to make a perfect seal with the PVC, but found it undesirable and unnecessary. The hose from the vac fits loosely in the PVC, but seals tight when the vacuum is on. It's actually more convenient not to have a tight fit.

I've experimented with the spindle hole, and I'm leaning toward 5/16, which is loose. The Shop vac has so much suction that you don't even really need the end cap. Leakage around the spindle is trivial.

I sacrificed the turntable and glued the automatic spindle parts so the wand isn't obstructed. But with the power of the Shop vac, you can simply make the wand hole bigger.

I skip the sink step. I figure if you're concerned about grit in the wand brushes, you can make several wands and reserve one for good records. You can also wash the brushes and rinse them with distilled water.

I figure you can make a dust free wand storage container out of one inch PVC and two end caps.

Paint spreaders come glued to heavy plastic. I simply pulled it off, which wasn't easy. Maybe a hair dryer would loosen the glue. I used DAP Weldwood contact cement to glue the brushes. I also tried double sided tape.

I cut the brushes with a rotary cutter borrowed from my wife.
 
I missed it, what are you spinning the record with? Are you using the table at 33, spinning by hand or something else?
 
I missed it, what are you spinning the record with? Are you using the table at 33, spinning by hand or something else?

I was afraid someone would ask. I started out using 78, because I'm lazy.

but that's not the ideal speed for vacuuming. In practice, my first efforts involved so much pressure on the record that it slowed and even stopped.

The paint spreader brushes apply much less force on the record and don't slow it as much. But you have to adjust the vacuum to the point where it no longer stops the spinning.

So my last tests involved applying the cleaning solution with a microfiber cloth at 78, then slowing to 16 for vacuuming.

Quite frankly, I think it's pretty forgiving, but I think the slower speeds are better for the final rinse and vac. After a minute of vacuuming, the disk is dry enough to play.

EDIT: It's a thing everyone can experiment with at practically no cost.
 
That spindle-fit wand is a great idea! Quite an advance for the DIY RCM.

As I mentioned, I don't even turn my TT on -- I just turn the platter with my right hand while holding the wand in my left. I start out applying a line of liquid from the edge to the label, then turn the platter while holding the brush down. If the record is really dirty, I do kind of a back and forth scrubbing motion. That is enough to turn the record around. At first I used the TT motor to turn the record, but found it is faster just to do it by hand.

The instructions on the regular MoFi record cleaning fluid says to do it twice...kind of like the shampoo instructions: rinse and repeat. On the really dirty ones I do that. I also keep a bottle of distilled water nearby and for a while I was doing a final rinse cycle. I'm not sure that's really necessary though.

I kind of like having the vacuum in another room...I can close the door, and avoid the complaints of my family. It is pretty loud. Of course, when I turn up the stereo, it's quite a bit louder. :banana:
 
One thing about DIY is you can experiment with cleaning solutions, brushes and methods.

Nothing is sacred, and you don't have to worry about breaking anything. I don't know if alcohol really adds anything. It certainly isn't needed to speed up drying.

I'm going to increase the amount of Dawn and follow it with a water rinse.

One good thing about letting the TT spin the record is you can use more water without getting the label or the TT wet.
 
Not for DIY, but I might be a little ticked if someone got wealthy selling them.:D

I'm thinking when I get the bugs out I might sell a few on the 'bay, just to get some feedback.

They're not difficult to make, but if you have to buy a Dremel, it eats into the cheap. I suspect mine could be mass produced with a drill press and a cutting bit.
Definitely interested if you decide to put a few out.
 
I can see this thing inverted on a flat base, with a dowel rod spindle and a small thin disc spacer to wash, rinse, and clean without a turntable.
 
I'm contemplating a 3-legged version to sit on a towel with a spindle rod in the center as a wash-rinse-dry fixture, again no turntable needed.
 
I built one for less than $50 using a plant stand, MCS platter and a new 1 hp Shop Vac, works great. In a future design I might enclose the Shop Vac for less noise and remote mount the switch.
 
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