This thread was started in January, 2022
admin
January 2022 in Painting Castings
Since 3D Printed castings are fragile with the incredible prototypical detailing, I developed this super easy chipped paint technique. I am working on several new videos but wanted to post this quick sbs. This is specific for water based paints. A dark base (like black!) is very important as you need a contrast between the base and top coat. I use a flat spray paint as my base.
This works great anytime you want chipped paint effects for oil drums, gas bottles, trash cans, etc…
Paint your casting using the same techniques and water based paint as you would my traditional hand poured resin castings then immediately dunk the entire casting in isopropyl alcohol (ipa). You can leave it in the ipa varying lengths of time depending on the desired effect and brand of paint. (This will be demonstrated in the video btw.) Try “sloshing” it around too, some neat results will occur. Experiment to see the different effects you can achieve. Super easy!
Pull the casting out and using a cosmetic foam wedge, gently roll the casting against the wedge or tap/blot the wedge against the wet paint. This is lots of fun and simple. Allow to dry then chalk weather just like the hand poured resin. Try layering the paint and chipping each layer allowing the layers to dry each time. Use different colors for really neat effects.
The wedges are easy to find and inexpensive. They can be reused many times. I believe I purchased this bag at target for like $5 a few years ago.
Have fun and enjoy!
Comments
Jerry
January 2022
Great idea!!
Jerry
randyp
January 2022
Thanks Brett. A new tool in the box. Now maybe I wont destroy the detail on your wonderful 3D parts.
skywatcher
January 2022
thats easy enough
KKarns
January 2022
Nifty technique…and great little tutorial.
Pappy
January 2022
Thanks for this Brett.
kebmo
January 2022
let’s see…i have the castings, i have the acrylic paints, i have the alcohol and i have the wedges. i also have a 9 week old puppy. i’ll try it when i can…
geoawelch
January 2022
Pretty snazzy tip, Brett.
George
admin
January 2022
Looking forward to seeing what you guys come up with here, be sure to post examples of your work with this technique.
Jerry
January 2022
kebmo said:
let’s see…, i have the acrylic paints, i have the alcohol and i have the wedges. i also have a 9 week old puppy. i’ll try it when i can…
Don’t try it on the puppy!!!
Jerry
kebmo
January 2022
Jerry said:
» show previous quotes
Don’t try it on the puppy!!!
Jerry
too late. she’s weathered…
David_C
January 2022
What a great easy way to do chipping. I should be getting that big load of your new O scale 3D printed detail parts on Wednesday I believe, so I’m going to try this effect on them. Thanks for the great tutorial Brett.
MitchN
January 2022
Brett, I assume the base black coat should be well cured oil based so it resists the alcohol. Or doesn’t matter?
admin
January 2022
Hey Mitch. Yes, I use Krylon Camo black from the rattle can but that has become impossible to find. I am currently looking for an alternative that isn’t $20+ a can! ALL of the alternatives I have tested claim to be “flat” but are really more of a “satin” finish.
Anyone have a good dead flat black rattle can brand?
brownbr
January 2022
Glad I have a can of the black in the garage.
I’ve actually been using a dark gray primer instead of black lately. Seems easier on the eye. It’s Rustoleum auto primer.
Jerry
January 2022
I used the rustoleum flat black!!
Jerry
MuddyCreekRR
January 2022
The dark charcoal tones I too feel are much better than the flat black…very few things in reality are that black…unless burnt…
admin
January 2022 edited January 2022
I like the flat black and remember once the final weathering is applied it is not black any longer! Since I cannot find any good flat black (Jerry thanks for the suggestion, I find the Rustoleum to have a bit of a satin sheen when cured) I might have to try the charcoal. It’s dead flat like the camo colors?
brownbr
January 2022
The dark gray auto primer is dead flat.
admin
January 2022
Thanks Bryan, just ordered a can. I have used this before but never for priming castings. Looking forward to giving it a try especially since the camo black apparently is gone. If anyone wants to give it a try - Amazon has it for $5 a can.
vietnamseabee
January 2022
Brett..,.after you get the the can from Amazon and have used it I’d be interested in knowing if all went well with the can…I’ve had issues with Amazon third party vendors in the past selling items with a ‘shelf life’ that don’t operate or last as expected (batteries as one instance)…as tho they buy up inventory near the end of it’s shelf life…not saying anything against Amazon…just questioning the possible tactics of third party vendors
Terry
admin
January 2022 edited January 2022
Agreed Terry, luckily this was Sold and Shipped by Amazon.
geoawelch
January 2022
Brett, would you have either an Amazon link or a name for the paint? I see there are many different flat black Rustoleum Auto paints
Thanks
George
admin
January 2022
Had a can on the shelf… This is available at Amazon and is an excellent replacement for the camo black. Thanks for the suggestion Bryan.
brownbr
January 2022
Glad to help.
I tried it for the first time while building the Case. I wanted 2 tone black on the boiler. Used flat black and this. Really liked it so I use it more than black now.
EmeryJ
January 2022
Thanks for the info. Running out of the camo black here as well.
David_C
February 2022
My wife went to Home Depot here in Chilliwack and bought the last two cans of that black spray paint. A couple of weeks later I went there and the only colour they had was green. At the moment, I have 1 1/2 to 2 cans each of the black, earth and khaki. I also have almost a full can of white and half of grey primer.
TomMich
February 2022
How do you guys keep your Rustoleum spray paint nozzles from clogging. I rarely get the use of a full can of paint. The nozzle usually clogs half way through the can. I try to turn it upside down and spray till it goes clear but it doesn’t clear up. At 1 point I found some extra nozzles on Amazon and bought a pack of 10 but they are all gone now, and tried to find more replacements but the ones that were listed as supposed to work didn’t work on Rustoleum.
Jim M
February 2022 edited February 2022
I always wipe the nozzle with paint thinner after using. I think it helps some.
Karl.A
February 2022 edited February 2022
Some tips … on tips
1- When the cans are empty always take off the good nozzles and save them as spares to swap out with one that spits or clogs.
2- When you finish spraying but still have paint left take the nozzle off and soak it in paint thinner, I usually use xylene as its stronger and will also clear a clog.
3- If you have a can with no paint in it but still has propellant in it put the dirty nozzle you just used on that can and use that empty to blow the nozzle clean.
Turning a can upside down and spraying until clear wastes both paint and propellant. I have several half full cans with no propellant left in them, so switch your dirty nozzle to an empty can and use that to blow it out.
4- I have a small empty garlic jar with xylene in it, when finished spraying I throw the nozzle in to soak, leave over night and with the lid on shake it to dislodge any clogs.
5- If you have a half full can with no propellant in it or a clogged stem you can decant the paint out into a small jar or bottle and use it to either air brush or brush on. There are several YouTube videos on this
admin
February 2022
“Turning a can upside down and spraying until clear wastes both paint and propellant” - I find this method works if you remember to do it every time, but uhmmm, I seem to always forget.
Seems no matter what I do they still clog up. I’m lucky to get thru ⅔ of a can… Gonna try the soaking cap in Xylene. Only done that using paint thinner and no go - most eb too weak a solvent.
KKarns
February 2022
Right Brett it works great to keep the line nice and clear. Takes only a second or two and any waste is so small to be a no issue. I don’t use spray paint often enough to worry about getting to technical and usually buy the small 100ml cans and by the time there would be any issues it’s about gone anyway. I use Tamiya spray paint almost exclusively and their Fine Mist Primer can’t be beat.
TomMich
February 2022
Thanks for the tips. I have taken the nozzles off the cans and soaked them in mineral spirits but that doesn’t work very well. I’ll have to try the xylene. I do save all nozzles if and when I do actually empty a can of paint but always seem to not have enough.
kebmo
February 2022
admin said:
“Turning a can upside down and spraying until clear wastes both paint and propellant” - I find this method works if you remember to do it every time, but uhmmm, I seem to always forget.
Seems no matter what I do they still clog up. I’m lucky to get thru ⅔ of a can… Gonna try the soaking cap in Xylene. Only done that using paint thinner and no go - most eb too weak a solvent.
i have to give that a try. i’ve had terrible luck with rattle cans.
KKarns
February 2022
Hey Kevin, that technique I suggested works great to keep the line and nozzle clear. Check out Tamiya small spray cans (100ml). They spray great and smaller cans tend to run out before significant clogging issues surface.
admin
February 2022
Is this the Tamiya you’re using?
KKarns
February 2022
The can label looks different but just may be an updated label…I’ll look around and check if it’s the same…I have used the Testors small cans and Tamiya is so much better.
KKarns
February 2022
The paint I have is for aircraft models but I think it’s only the color line that makes it different they are both the same paint…the aircraft line has more muted camo type colors.
SteveCuster
February 2022
On the issue of clogged spray cans I buy bags of replacement nozzles online. They don’t have anything for the Krylon camo paints because of the weird nozzle but for the Rustoleam ones just search for Rusto Fat Caps. I think they are used by graffiti “artists” and they come it different patterns and a bag of 50 is only a couple dollars. The heavy spray pattern ones are bad for castings but give a nice texture for roofing material especially 3 tab shingles.
KKarns
February 2022
Great tip Steve…get it! Lol…
kebmo
February 2022
KKarns said:
Great tip Steve…get it! Lol…
[rimshot] he’ll be here all week…
TomMich
February 2022
I’ve looked replacement caps online and bought some that said they were for Rustoleum but they didn’t work. Made a huge mess. I’ll try looking again.
KKarns
February 2022
Cracked me up Kev!
admin
April 2022
F O U N D
Rustoleum cammo black - back in stock at my Walmart.
First time in at least a year.
Karl.A
April 2022
Now that is good news… Now I just need a can (or three) of the Khaki to go with it … !
(and not at $16 per can)
admin
April 2022
Karl.A said:
Now that is good news… Now I just need a can (or three) of the Khaki to go with it … !
(and not at $16 per can)
Ton of khaki and brown too… maybe this is coming back nationwide at $5/can. Still out of stock at Amazon. HD and Lowes still spotty as well, no black at all. If anyone finds the black (especially) locally let us know! But get out there and grab some black while it is still in stock, just don’t go to my Lake Dallas WM, somebody might have bought all 6 cans of the black…
Jim M
April 2022
Checked Walmart today and they have it here in central Wisconsin as well. They changed the can though which now says “2X Ultra coverage”, I hope they didn’t change the formula too much. Haven’t tried it yet.
kebmo
April 2022
i’ve been able to get it at ace whenever i want it. i’ll gladly pay a few pennies more at ace than give the walton family anymore money.
MuddyCreekRR
April 2022
Bought entire cases at LOWES in NJ…
glandesjr
August 2022
I too use the Rustoleum Camo paints but was told that they were going to stop making them, so I bought everything Home Depot had. Well it sounds like they are back which is great. This is about the only spray paint I had been using and didn’t want to change. Plus I told my wife she can use it to paint her nails and save us a ton of money
kebmo
September 2022
glandesjr said:
I too use the Rustoleum Camo paints but was told that they were going to stop making them, so I bought everything Home Depot had. Well it sounds like they are back which is great. This is about the only spray paint I had been using and didn’t want to change. Plus I told my wife she can use it to paint her nails and save us a ton of money
16 penny nails?
Oldiron
November 2022
Adding to an old one here but if you use a can of brake cleaner to blow out the tip, the straw fits in the base or the tip perfectly and the solvent cleans the paint right out. Bob
kebmo
November 2022
Oldiron said:
Adding to an old one here but if you use a can of brake cleaner to blow out the tip, the straw fits in the base or the tip perfectly and the solvent cleans the paint right out. Bob
thanks for the tip, bob. how exactly do you do it? what’s the method?
Oldiron
November 2022
Pull the tip off the paint can, stick the tube from the brake clean in the bottom and spray away. Pro tip, make sure the opening of the spray tip points AWAY from you, brake clean taste terrible. Bob
kebmo
November 2022
thanks
admin
November 2022
I have uploaded a new tutorial to YouTube demonstrating this technique:
Karl.A
November 2022
Awesome video,
Quick, clear and precise presentation with outstanding results.
Jim M
November 2022
Great video. Very helpful, thanks.
KKarns
November 2022
Very professionally done!
Mountaingoat
November 2022
Thank you so much for the video. Very instructional and motivational…Rick
gjdale
November 2022
Great video Brett - clear and easy to follow. Your “side-bar” comments are also very useful for us newcomers. Will you be adding this video to your Craftsman Kit University collection?
Wes
November 2022
Thanks for the video Brett
Dave_S
November 2022
Brett,
You are a natural teacher. See it, Say it, Do it.
Later, Dave S. Tucson, AZ
randyp
November 2022
Great Job Brett. I like the step by step process. Thanks for the video. Randy