Originally Posted by
JohnG
I have checked out information on the Aluminium Foil Test, and if there is a importance in it being carried out on a Ultrasonic Record Cleanng Machine, "URCM"
This is a relevant test and part of recording the functionality of the machine over time,it is wise to carry a test out at initial set up, hence the test foil sample should be stored and revisited as a observation/comparison against interval testing at approx 3 months apart. Storage/Archiving the sample could also be a photograph or scanned image.
The basic investigation of the foil test is to demonstrate the intensity and distribution of cavitation in the bath.
There are tutorials on line showing the procedure, and there are threads relating to the outcome of a foil test in a URCM in forums.
I have come to understand, that a solution clean will be required after a foil test, as residuals will be seen in the tank. I don't think any vinyl owner would want their vinyl in with the foil residuals
Some on the forums lean to the idea that the longer the foil takes to perforate, the less harm will be done to the vinyl.
Some also say, that the vinyl is much more hardy and elastic than the foil,
and it will not incur any breakdown of its structure.
I would like to think the more foil sheets placed in the bath, the less intensity of cavitation perforations produced, "to be proven" just a thought.
If proven, the more vinyl in the solution, the less intensity of cavitation.
As stated before, I will be doing a standard cleaning method with a knosti, to clean any handling residual marks,before a Record is put into the URCM
I like the idea of slowing the rotation down to 0.33 RPM and allowing for a Three Minute clean as a second cleaning regime for the vinyl. Followed by a luke warm distilled water rinse. Time lapse after first clean to be decided.
I will work out the best method for a first clean, i,e how many records in the bath, length of cleaning period. Followed by a luke warm distilled water rinse.
I sent a friend a link for a motor I had found, he claims it changes its RPM, by changing the input voltage, max speed is 0.5 RPM.
This is my initial investigation of creating my URCM, I hope that somebody with more savvy than myself, can contribute.