Heat curing Rusto rattle can paint?

[kjdunne]

I will be repainting a prop and side mount engine control housing and handle with Rustoleum Pro rattle can paint. Will oven baking cure it well and faster than the weeks it took to really harden the last parts I painted with it? If yes, what temp and for how long?

 

[Woodonglass]

Re: Heat curing Rusto rattle can paint?

It is what it is. I don't think "Baking" it is gunna do much for it. a Full Cure is more of a Chemical/Molecular thing. If you want a more durable finish use a sprayer with rustoleum paint and add the hardener.

 

[kjdunne]

Re: Heat curing Rusto rattle can paint?

Thanks WOG. I guess "baked enamel finish" must just be an advertising term! I don't have a compressor, so I'll just have to be patient while the spray paint hardens.

 

[Grandad]

Re: Heat curing Rusto rattle can paint?

I found I was able to bake Rustoleum (Tremclad in Canada) enamel on small aluminum parts in our gas barbeque with great results. These were structural mounting parts for my tower. I don't have a recipe for you, but I found it worked with a wide variation in temperature. On my first attempt, I preheated the oven to 350 degrees (I think, cuz the mickey mouse thermometer sometimes lies), put the parts in supported on a stainless steel basket, closed the lid and turned the heat down low. After about 15 minutes, I turned off the gas and let the oven temperature fall gradually, which meant that the parts were hot for a significant time of a half hour or so. The paint was hard and scratch resistant. On my next attempt, I started out similarly, but the heat rose higher than I planned to about 500 degrees before I turned off the gas. I expected to see some damage, but there was no discernible effect on the off-white paint color. One suggestion - use the outdoor barbecue, not the Admiral's indoor oven. - Grandad

 

[Woodonglass]

Re: Heat curing Rusto rattle can paint?

Well, Baked Enamel is a different Kettle of Fish! Rattle Can Paint is formulated a bit different. Usually if you try to heat it it will Krinkle and separate from the substrate. It's formulated to "Dry" fast to the touch, but then "Chemically" cure over a 30 day period. Enamels that are Placed in a Heated Booth are formulated differently and actullay DO react to the heat and come to a cure under the heat. With out it, they would NOT dry to the touch very quickly. That's a very simplified explanation but I hope this explains it a bit.

Have you ever tried a PreVal Spray system. They work GREAT and this would allow you to use Rustoleum from a Can and the added hardener. It's cheap. Preval system is under $10 at Lowe's.

 

[GA_Boater]

Re: Heat curing Rusto rattle can paint?

I would not bake a prop with a rubber hub. Just adding my 2?.

 

[jbcurt00]

Re: Heat curing Rusto rattle can paint?

I would not bake a prop with a rubber hub. Just adding my 2?.

I'd risk loosing an arm using the oven to bake boat parts......... I agree ^^^^

 

[GA_Boater]

Re: Heat curing Rusto rattle can paint?

I'd risk loosing an arm using the oven to bake boat parts......... I agree ^^^^

There is that, too. But even wouldn't even think about stickin' a hubbed prop on the barbie, either.

Wood has the best idea with the PreVal spray outfit and Rusto with hardener for the prop, Then you might as do well do the rest and not waste the Rusto/hardener.

 

[Mud Puppy]

Re: Heat curing Rusto rattle can paint?

I've oven baked paints before in an industrial oven trying to hurry them up for shipments. Some paints harden, some get softer.

The above replies are correct, rattle can paint is made to cure on their on time schedule. Powder coat is about the only thing I've ever had success with, but it's made for oven baking.

I don't think I'd ever use my grill either. The out gassing form the paint would still be in the grill the next time you put Shrimp on the Barrbie.

I'd end up catching Lumpucker or the Epizudic! I suspect one of the Pit Bosses here in town must bake off paint every night after he's pulled out the last rack of ribs. The meats always have just a hint of Krylon and lighter fluid.

 

[kjdunne]

Re: Heat curing Rusto rattle can paint?

Thanks all, good info. I'll check out the Preval sprayer. For once, I'm not in a hurry to use these parts, so the rattle can is still an option too.

 

[GT1000000]

Re: Heat curing Rusto rattle can paint?

Another option I'd like to offer is to check out some of the gun finishes available...
Some are baked and some are catalyzed...
They are made to wear against each other and are extremely durable.
Some of the brand names are; Cerakote, Duracoat, Gun-Kote, Brownell's Teflon/Moly Oven Cure and Baking Lacquer
You could check out Brownells.com for what's available...

 

[JASinIL2006]

Re: Heat curing Rusto rattle can paint?

Preval looks interesting. How long do the power units last? Can you spray more than on containerful of paint with each unit?

 

[britisher]

Re: Heat curing Rusto rattle can paint?

Just a suggestion..... Google to see if you have any Powder Coating specialists in your area. If there are, they may charge you maybe $50 or so, but you'll get a finish that will last & last. Near to me in Florida is a company that does Powder Coating on Metal Railings, etc that have to withstand the outdoors and salt laden atmosphere's here. They will do 'other' jobs too. Worth a look. Do it with a rattle can and you'll be doing again very soon and soon after that too.

 

[Woodonglass]

Re: Heat curing Rusto rattle can paint?

Preval is basically a CO2 unit with a Glass container. You mix your paint just like the old "Cup Guns" One CO2 unit will spray about 6-8 oz of Paint which is the equivalent of 1 to 1 1/2 cans of Rattle can Paint. It does and Extremely good job and you can buy replacement nozzles and additional jars in 3oz and 6 oz sizes. I have 1/2 dozen of each and a bunch of nozzles that I keep clean with acetone and Mineral spirits. I don't know how I survived this long with out one of these. I credit Yacht Doctor for informing me about this great system. It's perfect for touch ups on Gelcoat and Small Paint jobs. Saves me getting out the paint gun a BUNCH!!!!

 

[JASinIL2006]

Re: Heat curing Rusto rattle can paint?

I think I'm going to have to get me one of these and give it a try... sounds pretty useful.

Thanks, Wood!

 

[Woodonglass]

Re: Heat curing Rusto rattle can paint?

The Key to using a PreVal is getting the mix right. Similar to a typical spray gun. I use a 50/50 mix of Acetone and Mineral Spirits and thin my paint using about 2 oz of thinner and 4 oz of paint in a 6 oz jar. That seems to give me excellent results. I might add just a bit more thinner if the temps are in the 60's or 70's.

 

[Scott Danforth]

Re: Heat curing Rusto rattle can paint?

I like the PreVal, however getting it right with epoxy is a pain. make sure you buy extra power units.
Frequently Asked Questions | Preval

The propellent is ether, propane and butane https://www.preval.com/sites/default/files/MSDS-files/Preval Sprayer MSDS.pdf so do not dispose of half full cans in the burning barrel :facepalm: ask me how I know.

I have baked engine paint for years on things like valve covers, intakes, oil pans, etc.

Here is what I do:
make sure wife is out of town
put the oven on low (about 150-170).
make sure parts are ready for paint
have a wire rack for painting ready (or mechanics wire hooks already in place)
pre-heat the parts for about 20 minutes
remove to outside area to spray
spray a light coat
return to oven for about 30 minutes
remove and re spray
repeat as required.

The paint cures faster, however the paint is not any more durable, plus if the wife comes home and the house smells like hot paint, she wont be happy.

BTW, a few of the halogen shop lights will also work to warm the parts enough to speed curing.