New to me, but perhaps unknown to others

Skyewolf

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Just getting back into the swing of kit bashing and rekindling an old hobby, so...paint aggaitor (that you would add to bottles that dont have them)
I have a fair few AV paints and found that they tend to settle to the bottom after a while! After purchasing a paint set from hataka (from this site) I noticed it had a rattle! So got some aggaitors from MIG.
I also have similar size bb's (I do airsoft) just wondering if anyone else has done what I'm thinking......and any other comments/ideas as the cost of the MIG aggaitors compared to the bb's is huge?
There are no silly answers lol20200728_031233.jpg20200728_031233.jpg
 

Skyewolf

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Should explain....
Remington.... 1500 ..... £13
MIG ....... 60 ........ £5
Just for comparison
 

SimonT

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The BB's are just disposable plated steel, not high grade stainless - I suspect they will rust in your paint
 

Mini Me

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I believe that the BB's are copper plated so rust may not be an issue.
 

Ian M

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Just Google Stainless steel baring balls.... (O.o)
5mm 200 balls .... £10 Should last a while.
 

Tim Marlow

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I have used Mig actuators extensively, but stopped because after a little while because I found that the pigment or bottle PVC in some Vallejo paints actually reacts with the Stainless BBS from Mig. Some paints are absolutely fine, but some of the earth pigments in particular appear to promote rust on the the stainless steel, which manifests as a rust stain on the PV C bottle. This doesn’t impact brush painting so much, but could be an issue with airbrushing. I suspect this is due to chlorine leaching from the pigment or catalysing a reaction between the PVC and the stainless steel. Stainless steel is quite unreactive in most situations, but can be easily rouged by free chlorine. It’s a particular bugbear in pharmaceutical manufacture whereby reactors are routinely repolished and passivated to minimise batch contamination.
If you go this route you will be better advised to use glass beads as your shakers. Copper is pretty reactive, so copper coated BB pellets may well react, or be porous enough to allow the mild steel to rust, which will quickly disrupt the copper coating and ruin your paint.
 

Dave Ward

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I get mine from Amazon - 6mm ball bearings - I make it a routine, whenever I buy any new paints, to slip a bb in! Also, it may be just a fad of mine, but I store my paints lying down ( All acrylics in the dropper bottles ). I can't say I've ever had any problems with rust, after about 5 years of doing this. ( maybe I just don't notice it )
Dave
 

Jakko

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I’ll repeat my experience of using glass paint bottles with these inside (the old Revell airbrush-ready enamels): you may end up with a bottle shattering in your hand as you shake it. Happened to me twice, luckily without cutting myself on the shards. The first time you think it’s a fluke, the second you realise it wasn’t, so I began fishing the agitators out of the bottles before using them, and stirring with a stick instead.
 

Tim Marlow

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Just to clarify, this is the issue I am referring to.
BC2BD1EB-8EEB-4C79-9F3C-FE609B57FD89.jpeg
it’s not extensive, and it’s by far the exception. The vast majority of my VJ paint is absolutely fine. I’ve never dissected one to really investigate the phenomenon, but it appears that iron from the SSBB has migrated into the polythene and oxidised. It has no effect on brush painting, but might cause flakes that could block an airbrush nozzle. I no longer add them to the bottles, but that’s because I found a used whirlymix vortex mixer (Lab mixer) in one of my old loft boxes and use that to mix paint rather than shaking by hand.
 

KarlW

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Just to clarify, this is the issue I am referring to.
View attachment 394075
it’s not extensive, and it’s by far the exception. The vast majority of my VJ paint is absolutely fine. I’ve never dissected one to really investigate the phenomenon, but it appears that iron from the SSBB has migrated into the polythene and oxidised. It has no effect on brush painting, but might cause flakes that could block an airbrush nozzle. I no longer add them to the bottles, but that’s because I found a used whirlymix vortex mixer (Lab mixer) in one of my old loft boxes and use that to mix paint rather than shaking by hand.
That's why I switched to glass beads, had the same thing happen in some GW paints, SS isn't impervious to corrosion and comes in different grades.

Jakkos point about glass bottles makes it more interesting that AlClad comes with agitators........
 

stillp

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I've had 'stainless' ball bearings react with Hataka acrylic and Vallejo Model Air. I wouldn't risk using ordinary BBs.

Pete
 

Jim R

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I drop one of these into dropper bottle paints like Vallejo. Stainless and seem to mix the paint better than ball bearings.
P1030775.JPG
 
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