(21-11-2012 13:23)vitalyB писал(а):  Требуется регистрация

Чувак немного доработал Ultrasonic Record Cleaner.
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Цитата:I've had a VPI HW-17 record cleaner for some time, but have always wondered if there was a way that could deliver better cleaning results along with less contact with the vinyl . So, after reading threads here and elsewhere about using ultrasonic cleaners to get the dirt off of vinyl, I thought I'd rig up my own unit.

I started with an ultrasonic cleaner that uses 60 KHz transducers. It was a little harder to find and a little more expensive than the typical 40KHz Chinese-made units, but the higher frequencies theoretically do a better job at cleaning the very small grooves of a record and there is less risk of damaging the vinyl from the cavitation. Those two points are a big advantage of 60khz units over 40khz units.

To rotate the records, I wanted to minimize motion in the cleaning solution. My target was a 4 minute cleaning time for the vinyl surface. Given that about 1/3 of the record is submerged in the solution at any moment, the math told me to find a 5 revolution per HOUR synchronous motor. Synchron makes such motors in almost any rph or rpm you could want. The 5rph motor yields a 12 minute rotation time. My plan is 1 rotation = 1 cleaning cycle.

I fashioned a spindle out of 9/32 W1 drill rod. It was was easy to machine a 1/8" diameter hole in one end of the spindle on my lathe to fit over the motor shaft (1/8" diameter).
The motor and shaft are mounted in place using an electrical connector box and conduit. The arm is mounted to the ultrasonic unit using L-brackets and pipe straps. The setup allows the motor and spindle assembly to be rotated up to load records, and then rotated down into the bath.
My spacers are 4" diameter, 1/2" thick cork rounds.

I'll report back after I clean and play some vinyl. My first batches will use distilled water and isopropyl alcohol at about 7 to 1 (Sep 2012 note: I've since gone to a much lower concentration of isopropyl, about 50 to 1) , with a few drops of Kodak PhotoFlo. This solution, combined with the very slow rotation, will allow the liquid to drain off the vinyl surface very easily.
The cleaner can still be used for any items you'd normally put in an ultrasonic unit. It does a great job on some fairly intricate gold jewelry I've cleaned.

Ну и дальше обсуждение и развития идей на два десятка страниц.