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India Ink + alcohol staining mixes
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 Posted: Sun Oct 22nd, 2017 11:24 pm
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Salada
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Can anyone please tell why so many of you folk dilute their weathering/ageing India ink in IPA ? (isopropylalcohol).
I always use water + India ink without causing any grain raising. What is the advantage of using IPA ?.

Thanks,     Michael 

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 Posted: Sun Oct 22nd, 2017 11:30 pm
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Rod Hutchinson
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My understanding is that it evaporates quickly and it reduces the surface tension in the ink, similar to what detergent does to water.



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 Posted: Mon Oct 23rd, 2017 12:45 pm
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Si.
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 " What is the advantage of using IPA ? "


Hi Sal. :wave:



It is possible on some extra smooth surfaces ...

... to get quite serious 'water marks' if using overly hard-water.

Of course battery-topup & steam-iron 'de-ionized' water is favorite for perfectionists.



Or if you don't wanna pay for it ...

... grab a few 'lumps of ice' from the frost-box ...

... melt 'em down & bottle it !

Pretty well 'de-ionized' & super el-cheapo !



The maker of a recent resin-kit I got, in the instructions, said ... :old dude:

... " whatever you do DON'T clean the parts using regular washing-up liquid ! "

He said it very often contains 'lanolin' amongst other contaminants ? ?



Dunno what he uses as mould-release, but he said ACCing straight outta the box is best.

Another resin-kit I have though, seems swathed in some kinda mould-release. :mex:





Make sure you use the right kinda IPA Sal. ! :P

Some of it froths-up a lot, as it comes out of the airbrush !! ;)



Alternatively, a handy bottle of 'Stoli.' or meths can work pretty well. :shocked:

Or just add it to the beer, to make PUNK IPA ! :Crazy:






:cb:



Si.



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 Posted: Mon Oct 23rd, 2017 09:23 pm
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Salada
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My thanks to Rod & Si for their prompt replies.

Rod: I think you are probably correct - quick evaporation & IPA is certainly a very good wetting agent for otherwise water repellent surfaces such as plastic or oil based painted wood.

Si: Now THAT is my kind of kit except I'd rather pay a little more for an instant liquid supply on demand. I hadn't thought about lime scale water marks, I ain't that fussy - anything near hot water/steam gets white streaks.

'De Luxe' brands of detergent certainly contain an emollient such as lanolin ("hands that do dishes...." old TV advert) but el cheapo stuff from the £1 store is unlikely to except -- (funny story, see below **).

Salada Wagon Works have never knowingly turned out out anything with "a very smooth surface", against Company policy.

** in the long lost past I worked for a now defunct large chemical business, making the principal crucial ingredient for a lot of the world's detergents - including hair shampoos.
We also made agricultural pesticides (using the same plant !!) & it was well known that the first insecticide batch always foamed a lot (having just switched from making Madame Pompadours' Luxury Hair Shampoo or whatever brand). We never heard what happened to the hair of purchasers of the first shampoo run after switching the plant back to whoever's shampoo brand !!. Happy days, down the pub for a 3 pint lunch then back to work; not a Certificate of Competence between us but we always made stuff & exported it worldwide at a profit.

Regards,    Michael

    

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 Posted: Mon Oct 23rd, 2017 10:27 pm
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Rod Hutchinson
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Another strong detergent was Kodak photoflow.  Unsure if it is still available in this digital photography era.



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 Posted: Tue Oct 24th, 2017 01:49 am
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W C Greene
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Howdy Michael, I dilute my india ink with alcohol...straight, no water. It works fine for me and I get the woozy warm feeling whenever I stain bass or balsa with it. Over many years I found that water+alcohol+ink sometimes, SOMETIMES caused the thin woods to warp so when I removed the water, I found that the wood doesn't warp or warp as badly. But then, now I build in a larger scale and don't use much 1/64 or 1/32 stock so maybe that's a reason for minimal warpage. Or maybe it's just because "I hold my mouth right!" (an old Texas saying)

Woodie



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 Posted: Wed Oct 25th, 2017 09:28 pm
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Salada
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Rod : I ain't a photologist but I would doubt if such chemicals were still generally available.

Woodie :  Ah !  The voice of Texican wisdom - I hadn't thought of 'warpage', which I guess pure IPA wouldn't cause. Makes more sense than Dubbya ever did (another TX zip coder).

Thanks & Regards,    Michael

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 Posted: Wed Oct 25th, 2017 11:32 pm
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Si.
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Hi Guys :wave:



I have used the 'Ilford' photographic wetting-agent ...

... same stuff as 'Kodak' photoflow ...

... just very pure detergent of some sort.



I'm sure it can still be had for film developing purposes.



L:



Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Sat Oct 28th, 2017 10:53 pm
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Michael M
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I'm having trouble locating India ink.  Where does everyone get there's?

I have some Kiwi Black Leather Dye (liquid).  Would that work just as well?



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 Posted: Sat Oct 28th, 2017 10:57 pm
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Rod Hutchinson
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Brown and black shoe dye works well.  Colour variation can be aided by diluting with isopropyl alcohol.  Very useful arrangement.



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Rod Hutchinson
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