I don't like most IPAs. I do like lagers and most ale's like Sierra Nevada's.
Dwight ________________________________ From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Paul Berger via cctalk <cctalk@classiccmp.org> Sent: Saturday, January 27, 2018 12:54:59 PM To: Henry Bond via cctalk Subject: Re: Yeah for me IPA=India Pale Ale On 2018-01-27 2:45 PM, Henry Bond via cctalk wrote: > Isopropyl alcohol would be a sensible guess, I've not seen that > abbreviation before though . > > - H > > On Sat, Jan 27, 2018, 18:24 Adrian Stoness via cctech <cct...@classiccmp.org> > wrote: > >> ipa as in beer? >> >> On Sat, Jan 27, 2018 at 12:17 PM, Carl Claunch via cctech < >> cct...@classiccmp.org> wrote: >> >>> The IPA is heated to 60C before the ultrasound is able to remove the >> oxide >>> remnants, FWIW. >>> >>> While we can often get the entire smooth surface of the head clean with >>> swabs and IPA, it is very difficult to clean all the material that forms >> in >>> the cruciform trench recessed into the head (where the read/write and >> erase >>> coil poles are visible). >>> >>> Heads can seem clean to the naked eye, but a good stereo microscope will >>> insure that you have a clean and smooth surface. >>> >>> Regards, >>> Carl >>> >>> Date: Fri, 26 Jan 2018 12:15:34 -0800 >>>> From: Fritz Mueller <fri...@fritzm.org> >>>> To: "General Discussion: On-Topic and Off-Topic Posts" >>>> <cctalk@classiccmp.org> >>>> Subject: ultrasonic cleaning for disk heads >>>> Message-ID: <9f2c2ac7-1b35-46f5-bd92-cc3dfd29f...@fritzm.org> >>>> Content-Type: text/plain; charset=utf-8 >>>> >>>> I watched with great interest one of curiousmarc?s recent Alto videos, >>>> wherein they clean a Diablo drive head ultrasonically. I?ve been >>>> struggling a bit with my restored RK05 drives to completely clean the >>> heads >>>> after minor head crashes. Not being able to get them really sparkling >>>> clean makes me always worried about running the drives for more than a >>> few >>>> minutes at a time, and a little nervous every time I spin them up?. >>>> Scrubbing and scrubbing and scrubbing with IPA and kimwipes just >> doesn?t >>>> seem to get all the crud off. >>>> >>>> I do have an alignment pack that I could use to re-align the heads >> after >>>> removing them for a proper cleaning this way. Decent ultrasonic >> cleaners >>>> aren?t terribly expensive and might be nice to have around the shop >>> anyway >>>> (I could also do all my eyeglasses :-) >>>> >>>> In the video, the heads are submerged in IPA in a glass cylinder, which >>> is >>>> then placed in the ultrasonic bath. >>>> >>>> Has anybody on the list here done this and have tips/advice beyond what >>>> can be seen in the video? It looked very effective! I?m also having a >>>> little trouble sourcing the squat form glass graduated cylinder online. >>>> >>>> cheers, >>>> ?FritzM. >>>> >>>>