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Hints, Tips and Solutions (Do NOT post requests for help here) If you have any useful general hints and tips for vintage technology repair and restoration, please share them here. PLEASE DO NOT POST REQUESTS FOR HELP HERE! |
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24th Apr 2006, 12:11 pm | #21 |
Tetrode
Join Date: Apr 2006
Location: Larne, Northern Ireland, UK.
Posts: 64
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Re: Isopropanyl
I was stupid enough to use some to try and clean a meter scale!!! (Remember all those old warnings about trying a test-patch) I now use, and please do not be offended, spittle! It works quite well, is cheap, and used in the antique trade for minor reconditioning of oil paintings...
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24th Apr 2006, 3:06 pm | #22 | ||
Retired Dormant Member
Join Date: Jul 2005
Location: New Bern, North Carolina, USA
Posts: 346
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Re: Isopropanyl
Quote:
You have to be careful with the stuff, and if you're using the supermarket variety, make sure to buy the 91 percent solution, not the "witch hazel" or 70 percent varieties. Those can leave deposits. Quote:
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24th Apr 2006, 3:39 pm | #23 | |
Retired Dormant Member
Join Date: Jul 2005
Location: West Yorkshire, UK.
Posts: 1,700
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Re: Isopropanyl
Hi,
Quote:
I managed to "rescue" it by removing the meter; then removing the cover from it. Then I sanded the cover down with finer and finer grades of emery paper (used wet with a dash of washing-up liquid and a small wooden block) to get it flat again (the solvent had left it lumpy.) Then I finished off with a metal polish and finally Brasso - these were tested first on an area of the meter cover normally hidden behind the panel for compatibility. Result, one flat, transparent, scratch-free meter cover; good as new Now all I need to do is persuade the oscillator in the thing to behave... Thought I'd mention this as there are sometimes ways back from mistakes with solvents; though the mistake takes seconds, undoing it takes hours... Regards, Kat |
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24th Apr 2006, 6:20 pm | #24 | |
Retired Dormant Member
Join Date: Sep 2003
Location: Wrexham, North Wales, UK.
Posts: 799
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Re: Isopropanyl
Quote:
Mike |
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29th Nov 2006, 2:14 am | #25 |
Retired Dormant Member
Join Date: Nov 2006
Location: Manchester, UK.
Posts: 157
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Re: Isopropanyl
I suspect that the solvent leaches or dissolves the plasticiser out of the plastic? Certain lubricants (such as Servisol) can do this to certain plastics too. 1.1.1 Trichloroethane (RS solvent cleaner) was a devil for this years ago, it's banned now under the ozone depletion regs.
Some superglues can also make certain perspex materials go porous or brittle. IPA was always supplied as a safer alternative, also contained in Ultrasolve and Ultraclens. IPA is properly known as Isopropyl alchohol, or Isopropanol. Chemists prefer to use its standard chemical name of propan-2-ol. Last edited by plumbweiss; 29th Nov 2006 at 2:25 am. |
4th Dec 2006, 5:44 pm | #26 |
Hexode
Join Date: Apr 2006
Location: Medway towns, Kent, UK.
Posts: 271
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Re: Isopropanyl
When i worked in a lab we used Isopropyl for all sorts of things. it worked wonders on getting branston pickle stains out of a pale blue carpet!
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4th Dec 2006, 6:15 pm | #27 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Re: Isopropanyl
When I went on the first VHS course for the Ferguson 3292 (JVC) at Gosport, our instructor, the redoubtable Steve Wisbey, recommended IPA for all cleaning of tape path parts.
Not the Greene King sort, you understand.
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Mike. |
4th Dec 2006, 8:47 pm | #29 | ||
Retired Dormant Member
Join Date: Jul 2005
Location: New Bern, North Carolina, USA
Posts: 346
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Re: Isopropanyl
Quote:
Quote:
At least be glad it wasn't your windows that were "etched" (with a glass cutter or even etching acid like they do on the tube here). |
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4th Dec 2006, 9:44 pm | #30 | |
Administrator
Join Date: Dec 2002
Location: Cardiff
Posts: 9,073
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Re: Isopropanyl
A single word, which I won't repeat here. Nothing specific to me/us.
Kids I think, as it's the end garage in the block and furthest from any houses. The delights of living in an ex-council house..... Quote:
I think the wire wool had more effect than the Isopropyl. But the door was fairly dirty so I don't think the spray-pint stuck very well anyway. Plus it was only done last night so still fairly soft. |
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8th Apr 2007, 2:55 am | #31 |
Retired Dormant Member
Join Date: Nov 2006
Location: Manchester, UK.
Posts: 157
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Re: Isopropanyl
Regarding the removal of silicon sealant, Farnell do a silicon eater solution, but it's dear. I found out that cleaning the label-glue-residue off new UPVC window frames using White Spirit also causes cured Silicon Sealant to shrivel and peel away...oh dear.
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