thinner for slow size to airbrush ?....

An interactive section of TheLetterheads.com

Topics include: Sign Making, Design, Fabrication, Letterheads, Sign Books.

Off Topic Posts may be deleted at the discretion of the web hosts. ABSOLUTELY NO SHARING OF COPYRIGHTED FONTS, CLIP ART, or VIDEOS!

Please take social chit-chat elsewhere!

Moderators: Danny Baronian, Mike Jackson

Post Reply
vance galliher
Posts: 307
Joined: Mon Apr 12, 2004 11:38 pm
Location: springfield, or.
Contact:

thinner for slow size to airbrush ?....

Post by vance galliher » Sun Jan 22, 2012 9:14 pm

.............i searched, but nothing came up. thanks for replies.
vance
dimensional and glass art signs
http://www.vancegallihersigns.com

Lee Littlewood
Posts: 219
Joined: Thu Apr 15, 2004 2:36 pm
Location: Portland, Oregon
Contact:

Re: thinner for slow size to airbrush ?....

Post by Lee Littlewood » Tue Jan 24, 2012 1:55 am

So Vance, you want to apply slow size with an airbrush, right?

It seems like you need a reducer to get the size liquid enough to spray well, but then it shouldn't affect the size's curing process.

I'd try Darby's Reducer - it was designed as a spray reducer; or turpentine - which is a very powerful "diluent" or viscosity reducer, and it seems like it would go well with slow sizes, but it is carcinogenic so wear a good mask.

erik winkler
Posts: 1063
Joined: Sat Feb 23, 2008 5:48 pm
Location: Amsterdam Netherlands
Contact:

Re: thinner for slow size to airbrush ?....

Post by erik winkler » Tue Jan 24, 2012 5:16 am

Realizing we are in the 2nd renaissance of the arts.
Learn, copy and trying to improve...
Still in the learning phase ;-)
Amsterdam Netherlands
www.ferrywinkler.nl
www.schitterend.eu
www.facebook.com/Schitterend.eu

Lee Littlewood
Posts: 219
Joined: Thu Apr 15, 2004 2:36 pm
Location: Portland, Oregon
Contact:

Re: thinner for slow size to airbrush ?....

Post by Lee Littlewood » Tue Jan 24, 2012 2:05 pm

Eric - it looks as if you are airbrushing a blend with the tinted size? Did you do the tops with clear size , or the whole thing in clear and then a light fog of tint into the wet?

We don't use the term "white spirits" in the US. I think it is a generic term, including what we here call "mineral spirits" or "paint thinner", and those are mixtures, so the "thinner" you buy at the hardware store can be different from the "thinner" at a paint store. (Kent, am I correct?)

Here is from the Shell website - still not very clear:

"What are white spirits and mineral spirits blends?

White spirits and mineral spirits blends are mixtures of paraffins, cycloparaffins and aromatic hydrocarbons with boiling ranges which typically lie between 150°C and 220°C. They are clear water-white liquids, chemically stable and non-corrosive and possess a mild odour. Examples of the Shell Chemicals range are LAWS (Low Aromatic White Spirit), ShellSol* 15 and ShellSol H.

How are white spirits and mineral spirits blends used?

White spirits and mineral spirits blends are used as solvents or diluents in thinners for paints and varnishes, paint driers, colour printing of fabrics, metal cleaning and degreasing, preparation of furniture, shoe and floor polishes, dry cleaning formulations and in the rubber industry."

erik winkler
Posts: 1063
Joined: Sat Feb 23, 2008 5:48 pm
Location: Amsterdam Netherlands
Contact:

Re: thinner for slow size to airbrush ?....

Post by erik winkler » Wed Jan 25, 2012 12:02 am

Haha I had these same translation problemsevery time here on the forum.
To be honoust you made me hasetating again...

There is turpentine: natural distilled product from cooking pine trees.
It is a mixture of different solvents.
Then there is a 'chemically' made brother which is no blend and leaves allmost no oily residue.
I used the later one.

Step one blending, step two let it dry completely and step three completely cover it with clear size.
Ofcourse it could easily done by stiping blending.


Erikieee
Realizing we are in the 2nd renaissance of the arts.
Learn, copy and trying to improve...
Still in the learning phase ;-)
Amsterdam Netherlands
www.ferrywinkler.nl
www.schitterend.eu
www.facebook.com/Schitterend.eu

Kent Smith
Posts: 555
Joined: Fri Dec 31, 2004 6:41 pm
Location: Estes Park, CO
Contact:

Re: thinner for slow size to airbrush ?....

Post by Kent Smith » Wed Jan 25, 2012 11:13 pm

There are many grades of mineral spirits commonly called thinner. Pure "white" spirits are rarely found for sale in the US and to my recollection only produced here by Union 76 although it would appear that Shell might be making it again. Since 76 is part of Conoco-Phillips now they may have changed too. That is what a good paint manufacturer uses as the tail solvent in alkyd enamels. High Temp and Low Temp reducers are made from white spirits with appropriate additives for adjustment to temperature range. What we usually find in retail hardware and paint stores is oleum grade which tends to be slightly oily. This impedes drying and hinders the reduction capability of the thinner.

As to a good reducer for spray or airbrushing gold size, I have always used a 50/50 mix of pure spirits of turpentine and boiled linseed oil. You can substitute high temp reducer as it works within the same range as turps. Darby's reducer is similar as it was developed from the RK series of Dupont Duluxe retarding reducer...high temp reducer. You can also use slow oil size instead of the linseed oil but that tends to make a mixture that has a really long time to come to tack. In any case, one should do some step wedge testing so you know how the mixture you choose will come to tack.

erik winkler
Posts: 1063
Joined: Sat Feb 23, 2008 5:48 pm
Location: Amsterdam Netherlands
Contact:

Re: thinner for slow size to airbrush ?....

Post by erik winkler » Thu Jan 26, 2012 8:31 am

Good to see you back Kent.
Realizing we are in the 2nd renaissance of the arts.
Learn, copy and trying to improve...
Still in the learning phase ;-)
Amsterdam Netherlands
www.ferrywinkler.nl
www.schitterend.eu
www.facebook.com/Schitterend.eu

Post Reply

Who is online

Users browsing this forum: No registered users and 6 guests