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  • Tamiya Yellow acrylic - tips for spraying
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    Roachie posted 13 Dec 2015 11:45
    Posted in Model Railways - General Discussions » Tamiya Yellow acrylic - tips for spraying

    Hmmmm.... I'm wondering whether it is an air-brush/compressor issue?

    What pressure are you spraying at? Is there any moisture in the air flow? can you adjust the spray pattern? perhaps try a smaller/narrow spray pattern. Maybe you need to use a lower pressure? Instead of spraying a model, get a sheet of styrene and tray out a few of these variables see if that changes anything.

    Back to paint... I note that you have shaken the paint. Have you actually tried stirring the paint? I have this mini power tool paint stirrer which mixes the paint far better than what shaking will do. Some yellows will get a solid particle layer that needs to get mixed in. What about trying a different brand of paint???

    Everything else seems right. Grey primer is always what I recommend.

    Hope this helps.

    SA_trains

    Gremlin wrote in the original post: there is no thinning, straight from the can after a solid 5 minutes shaking it https://www.railpage.com.au/images/smiles/icon_smile.gif

    Am I correct in thinking that he/you are using an aerosol can....not an airbrush?

    Back in the days when I was building/painting kits for a second income, I had a useful little gadget inside my paint booth. It comprised of a small electric (12v) motor from something like an old cassette player, with an extended shaft made from a piece of square brass tubing. That extension was about 60mm long and in the end of it I cut a thin gap and inserted a piece of scrap brass from a etch sheet (DJH models); soldered in place...about 3mm x 10mm.

    I connected the wires for the motor to my good ol' H&M duette and place the jar of paint up so the "stirrer" was at the bottom of the jar. Hold the jar with one hand and operate the H&M with the other.....result was a proper-good mixed-up paint bottle.

    Another idea I have employed over the years is to open a new tin of paint and drop-in a small nut or ball bearing, seal the tin up again and shake the bottle/can. The new foreign object does the job of mixing-in the solid stuff.

    Personally, I wouldn't even consider using an aerosol can to spray a model. Just my choice though.

    Roachie

    Edit history

    Edited 13 Dec 2015 11:48, 6 years ago, edited by Roachie

    Hmmmm.... I'm wondering whether it is an air-brush/compressor issue?

    What pressure are you spraying at? Is there any moisture in the air flow? can you adjust the spray pattern? perhaps try a smaller/narrow spray pattern. Maybe you need to use a lower pressure? Instead of spraying a model, get a sheet of styrene and tray out a few of these variables see if that changes anything.

    Back to paint... I note that you have shaken the paint. Have you actually tried stirring the paint? I have this mini power tool paint stirrer which mixes the paint far better than what shaking will do. Some yellows will get a solid particle layer that needs to get mixed in. What about trying a different brand of paint???

    Everything else seems right. Grey primer is always what I recommend.

    Hope this helps.

    SA_trains

    Gremlin wrote in the original post: there is no thinning, straight from the can after a solid 5 minutes shaking it https://www.railpage.com.au/images/smiles/icon_smile.gif

    Am I correct in thinking that he/you are using an aerosol can....not an airbrush?

    Back in the days when I was building/painting kits for a second income, I had a useful little gadget inside my paint booth. It comprised of a small electric (12v) motor from something like an old cassette player, with an extended shaft made from a piece of square brass tubing. That extension was about 60mm long and in the end of it I cut a thin gap and inserted a piece of scrap brass from a etch sheet (DJH models); soldered in place...about 3mm x 10mm.

    I connected the wires for the motor to my good ol' H&M duette and was about to place the jar of paint up so the "stirrer" was at the bottom of the jar. Hold the jar with one hand and operate the H&M with the other.....result was a proper-good mixed-up paint bottle.

    Another idea I have employed over the years is to open a new tin of paint and drop-in a small nut or ball bearing, seal the tin up again and shake the bottle/can. The new foreign object does the job of mixing-in the solid stuff.

    Personally, I wouldn't even consider using an aerosol can to spray a model. Just my choice though.

    Roachie

    Edited 13 Dec 2015 11:46, 6 years ago, edited by Roachie

    Hmmmm.... I'm wondering whether it is an air-brush/compressor issue?

    What pressure are you spraying at? Is there any moisture in the air flow? can you adjust the spray pattern? perhaps try a smaller/narrow spray pattern. Maybe you need to use a lower pressure? Instead of spraying a model, get a sheet of styrene and tray out a few of these variables see if that changes anything.

    Back to paint... I note that you have shaken the paint. Have you actually tried stirring the paint? I have this mini power tool paint stirrer which mixes the paint far better than what shaking will do. Some yellows will get a solid particle layer that needs to get mixed in. What about trying a different brand of paint???

    Everything else seems right. Grey primer is always what I recommend.

    Hope this helps.

    SA_trains

    Gremlin wrote in the OP: there is no thinning, straight from the can after a solid 5 minutes shaking it https://www.railpage.com.au/images/smiles/icon_smile.gif

    Am I correct in thinking that he/you are using an aerosol can....not an airbrush?

    Back in the days when I was building/painting kits for a second income, I had a useful little gadget inside my paint booth. It comprised of a small electric (12v) motor from something like an old cassette player, with an extended shaft made from a piece of square brass tubing. That extension was about 60mm long and in the end of it I cut a thin gap and inserted a piece of scrap brass from a etch sheet (DJH models); soldered in place...about 3mm x 10mm.

    I connected the wires for the motor to my good ol' H&M duette and was about to place the jar of paint up so the "stirrer" was at the bottom of the jar. Hold the jar with one hand and operate the H&M with the other.....result was a proper-good mixed-up paint bottle.

    Another idea I have employed over the years is to open a new tin of paint and drop-in a small nut or ball bearing, seal the tin up again and shake the bottle/can. The new foreign object does the job of mixing-in the solid stuff.

    Personally, I wouldn't even consider using an aerosol can to spray a model. Just my choice though.

    Roachie

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