I need something that just starts up when I turn the key, like my Rav4. and I have a life, and a wife, and things to get done. but it mostly works out of the box on any old shitbox. And yes, Winbloze is a hulking, shambling mass of Yog-Sothoth's tentacles. And every once in a while, thanks to politics and infighting, you get invaded by William Wallace and have to start all over again with a new distro. Oh, and that you have to rebuild the engine every time you change the headlights, or add a trailer, and that disassembles itself from time to time, and you again have to rebuild the engine, only with a bunch of new and different parts, and the "online" documentation is always for 3 versions older than what you're working on. That you have to get mostly working before you can even read the man pages. what you call a Real Computer is, in fact, a Real Computer KIT. Before cleaning: After cleaning: Another method for cleaning cover panels (especially if they're sticky) is a bath in warm water with dish detergent and a splash of ammonia, though this can be cumbersome with some of the 2 foot square top and bottom panels of larger instruments. Looks like it may have taken a little of the screen printed line too, but the after is much better than the before. ![]() I removed it with denatured alcohol and the magic eraser, but if you look at the second pic you can see I started off a bit too aggressively at the right end of the line and the chem film is lighter there. The following pictures are of the cover of an old HP 3460B voltmeter - it had a mark down the center from decades of contact with a rubber seal on an internal baffle as seen in the first pic. Gently for more time is better than fast and aggressive in this instance, though the outside vinyl-ish covering of most of the HP panels seems more impervious to damage than the thin chem coats used on the inside. I do try to be gentle, though, because the melamine sponge WILL take off the inner finish on some of the aluminum panels if you get too aggressive with it. Usually go (in order of escalation) window cleaner, IPA, denatured alcohol, naptha for removing crud and heavy-handed magic marker 'art' from things. I've had pretty good success with that method. Clean Magic Eraser not sure what it might be called in your neck of the woods). Try your solvents and a melamine sponge (sold in the US as a Mr. I drop back to straight 70/30 isopropanol and deionised water if I want a cleaner that's guaranteed 'residue free'. It's the active ingredient in Zoflora disinfectant but using it in its own has the advantage that it's virtual odour free and very, very cheap compared to commercial preparations like Zoflora. I've used Benzalkonium chloride as a household disinfectant for years as it has low toxicity compared to many other common disinfectants (especially phenol related ones which have high toxicity in cats and dogs - there's a story of a big cat getting fatally poisoned at one of the big zoos when a keeper used a phenolic disinfectant to mop out an enclosure). Consequently throughout the whole Covid thing I have found myself completely free of being a thrall to 'big hand sanitiser'. Then Covid-19 hit and I found myself with ready-made sanitiser/disinfectant packaged up pocket size ready to go. Ironically I originally brewed up that mixture back in 2019 in litre odd quantities as an improved version of my normal 70% isopropanol specifically for spectacle cleaning and packaged it into 50ml spray bottles. Benzalkonium chloride (aka BAC) is a quaternary ammonium compound that is both a detergent (surfactant) and a highly effective disinfectant and antiseptic. As a matter of fact my 'standard' cleaning solution at the moment is 70% isopropanol, 30% de-ionised water and 0.1% Benzalkonium chloride. ![]() I've had consistently good results with a melamine sponge and isopropanol (or 70/30 isopropanol and water if there's any suspicion that the stain has a polar component).
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