Cleaning RK05 packs (Was: LGP-30 Memory Drum Update)

[curiousmarc3 at gmail.com]

We use 6"x6" clean room rated wipes (I think they were either Berkshires or Kimwipes) from Grainger and 99% isopropyl alcohol from Fry's. Won't scratch, free of microscopic dust and lint, and 99% alcohol will leave no drying marks (it's typically the last rinse in IC manufacturing). May cost you a bit. Wipe your work area before and use clean room gloves.
Marc

Sent from my iPad

> On Jan 5, 2017, at 6:40 AM, Al Kossow <aek at bitsavers.org> wrote:
> 
> isopropyl alcohol works. TFE is better, if you have some stashed.
> 
> If you can find them anywhere, Texwipe made a plastic wand that looks like
> a tongue depressor with a slit down the middle and a lint free sleeve
> called the Texsleeve (tx300 sleeve, tx800 wand) that you would use to clean heads
> 
> Minor head crashes leave a tar-like residue that you need to remove. A pack inspector
> is a handy thing to have (spinle with microscope and illuminator on the rack and pinion)
> to look for surface damage.
> 
> On 1/5/17 5:22 AM, Noel Chiappa wrote:
>>> From: Klemens Krause
>> 
>>> We clean our RK05 disks in a very robust way: with cheap burning spirit
>>> and paper towels. ... We rubbed away thick black traces from occasional
>>> head crashes and we never removed the oxide coating with this torture.
>> 
>> I am about to get a large batch of RK05 packs, so I am interested in the
>> details of this.
>> 
>> First, what is 'burning spirit'? (I assume this is a straight translation
>> into English of some German term, but not knowing German... :-) After poking
>> around with Google for a while (hampered no little by the fact that it's the
>> name of a band, and also a term in World of Warcraft :-), it seems like it
>> might be acetone?
>> 
>>    Noel
>