Ultrasonic LP Cleaning vs. “Thread Type” Cleaning (Keith Monks/Loricraft/etc.)


Many dealers now tout ultrasonic record cleaners as the ultimate, yet companies like Loricraft and Keith Monks continue to introduce new “thread type” (or “string”) record cleaners.

There was a recent discussion in one of Michael Fremer’s on-line columns (https://www.analogplanet.com/content/sme-loricraft-introduces-upgraded-thread-type-vacuum-record-cle...) announcing a new thread type record cleaner from Loricraft. In the comments section, several owners of thread type cleaners praised them and one person stated a “thread type”was better than their own ultrasonic cleaner.

I’m interested in hearing from those of you who have experience with BOTH types of record cleaners, and what you perceive to be the pluses and minuses of each.

As for myself, I’ve been plodding along for years with a VPI 16, and I would like something that is faster to use and that will run for more than an hour without overheating. 😎
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The Keith Monks is the original RCM. Used by Better-Records, BBC, Library of Congress, etc., etc.
After decades of refinement, the KM RCMs no longer use the maintenance heavy string method. The nozzle vacuums off the dirt with a medical grade German pump. The KM fluid is also special.
The fluid is easily applied and quickly brushed in. The whitish surfactant is seen. The arm is placed on the label and automatically travels one grove at a time as the nozzle vacuums up all the dirty fluid. This takes a bit over a minute a side. Quick and complete.
As opposed to several minutes for the US machines and the records sitting in the dirty water.
@mglik - I think the maintenance and care of the "traditional" Monks is overstated. When I got mine, used, I knew it was not performing as it should and had it rebuilt by the guy who does the institutional work for Monks based out of NY. He also showed me how to operate it properly and we made a few tweaks- he repositioned the "arm rest" and I added silicon washers wherever there is metal to metal contact on a screw. (Some of the old Monks show rust- frightening). Once you get the hang of it, it’s relatively easy to adjust and maintain.
I don’t use the fluid applicator head since I use a variety of fluids and I found that the dispenser flings fluid beyond the platter-- I keep a microfiber towel handy to wipe the surface as it is running, and once done, use some canned air to get water out of any crevasses, empty the waste jar, cut off the "used" thread that has been sent to the waste jar, etc. The machine wipes down easily and threading the bobbin, while not easy, is something that an owner can do with a little time and trouble- it basically involves taking the nozzle off and re-threading the "string" through the arm tube using a little rubber pipe that then allows the vacuum to pull it back through to the waste jar. You can clean a lot of records with one bobbin of the special thread.

Some of the machines may have been abused (commonly, too much waste water without emptying the jar will cause water to flow back to the diaphragm of the pump and then the diaphragm has to be replaced, if not worse). Even with a rebuild, mine came it at less than retail for a brand new Omni. The older models can be brought back to life at some cost. I would recommend that anyone buying an older Monks have it checked by someone who knows the machine. It was an ingenious sort of Rube Goldberg affair when it was first made, and has the quirkiness of a British vintage car, sans the Lucas Prince of Darkness issues.
There is a huge variance in US cleaning machines. Your question is rather like asking if a car is faster than a bike.

As @whart has noted, US results depend on frequency, power, temperature, spacing, surfactant, and rinse. It’s only when you get careful with all of the above that your results approach optimal.

The first question to ask is how much you can trust your US bath to meet spec. If it’s medical equipment from Germany, you can trust it a bit more than flimsy-consumer easy-to-use from anywhere.

There are threads on this topic which you might want to examine. A high class expert on cleaning technology, whose handle escapes me, contributed to one thread and refined my own cleaning process, for which I am considerably grateful.

I use an Elma US machine from Germany, and doubt very much that my records are less clean than anybody's.
I've been using the KM Prodigy threadless machine for several months, came from a VPI16.5 and find it quick, quiet (relatively speaking) and cleans better than the VPI. Yes US may clean deeper but are not as simple as this machine is. YMMV