Boiler jacket finish

This forum is dedicated to the Live Steam Hobbyist Community.

Moderators: cbrew, Harold_V

hoppercar
Posts: 475
Joined: Sun Jul 22, 2018 4:09 pm

Boiler jacket finish

Post by hoppercar » Sat Dec 11, 2021 6:54 pm

Ok, so after two years of running my mikado, I'm not happy with the paint finish on my boiler jacket..... As memory recalls, I cleaned the jacket with acetone, and painted it with Rust-Oleum primer, and gloss black in a rattle can.....after drying, I coated it with a laquer based spray on clear coat....it looked good for a while, but after a while, the soot ,smoke, ashes and cinders have impinged themselves into the clear coat ?... Step one, I have found a successful way to clean it. Working in small areas, I rub it down with cdc brake cleaner, this seems to dissolve the laquer then wipe it clean, with an automotive pre paint cleaner. Success...!!!....this gets it down to the original gloss black paint, which is still shiny and intact........my question now is, once it's thoroughly cleaned, what can I spray it with, for a top coat, that will keep it shiny , that the coal ash and soot, won't impinge itself into ????

User avatar
LVRR2095
Posts: 1608
Joined: Sun Mar 04, 2007 6:50 pm
Location: Maine, USA

Re: Boiler jacket finish

Post by LVRR2095 » Sun Dec 12, 2021 6:02 am

I don’t think you need a top coat. If the paint is shiny as you say, just keeping it cleaned after a run should be all that is required.
And if the paint does dull a little..a quick rub with DuPont white polishing compound will bring back any luster.

Keith

k36no4862002
Posts: 135
Joined: Sun Feb 08, 2009 4:27 pm
Location: Surrey, UK

Re: Boiler jacket finish

Post by k36no4862002 » Fri Dec 17, 2021 3:10 pm

Have you thought about having it powder coated. I had my k36 powder coated 10 years ago and it still looks as good as the first day. Powder is very durable and long lasting
Paul Edmonds,
Surrey, United Kingdom.
2.5" Scale D&RGW K36, 1.6" Scale CHallenger 4-6-6-4 (still ongoing)

User avatar
Bill Shields
Posts: 7748
Joined: Fri Dec 21, 2007 4:57 am
Location: Somewhere in the World
Contact:

Re: Boiler jacket finish

Post by Bill Shields » Fri Dec 17, 2021 9:53 pm

Ever consider a stainless steel jacket?

May not be prototype...but is a lot easier to deal with
Too many things going on to bother listing them.

User avatar
NP317
Posts: 3523
Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Boiler jacket finish

Post by NP317 » Sat Dec 18, 2021 12:00 am

My restoration team installed a stainless steel jacket on Heisler #90 for the then-new Mt. Rainier Scenic RR. In 1981.
Stainless steel was more difficult to work with, but the results are long lasting and look good to my eyes.
RussN
MRSRR06.2_0002.jpg

Berkman
Posts: 569
Joined: Wed Aug 16, 2017 7:55 pm

Re: Boiler jacket finish

Post by Berkman » Sat Dec 18, 2021 2:35 pm

how difficult is painting a Stainless jacket?

User avatar
Bill Shields
Posts: 7748
Joined: Fri Dec 21, 2007 4:57 am
Location: Somewhere in the World
Contact:

Re: Boiler jacket finish

Post by Bill Shields » Sat Dec 18, 2021 2:37 pm

about like painting anything else stainless steel.
helps if you rough / etch the surface
generally - the SS jackets I have see are all natural.

from my standpoint -> the idea of using stainless is to avoid painting...BTIJOMO
Too many things going on to bother listing them.

User avatar
NP317
Posts: 3523
Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Boiler jacket finish

Post by NP317 » Sun Dec 19, 2021 1:29 am

Don't paint SS jackets. That's one of the points of using that material.
RussN

Glenn Brooks
Posts: 2664
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: Boiler jacket finish

Post by Glenn Brooks » Mon Dec 20, 2021 8:55 pm

SS will eventually rust. Used to be steel manufacturers carefully controlled the amount of ferrous materials in their stainless mill runs. No longer. Now the quality is simply not there. If you can find some hi grade stainless, go for it - if you like the look. However, if you want a distinct color scheme, better to use plain sheet metal and have it powder coated, or do a high end paint job.

Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....

User avatar
Bill Shields
Posts: 7748
Joined: Fri Dec 21, 2007 4:57 am
Location: Somewhere in the World
Contact:

Re: Boiler jacket finish

Post by Bill Shields » Tue Dec 21, 2021 9:04 am

Glenn Brooks wrote:
Mon Dec 20, 2021 8:55 pm
SS will eventually rust. Used to be steel manufacturers carefully controlled the amount of ferrous materials in their stainless mill runs. No longer. Now the quality is simply not there. If you can find some hi grade stainless, go for it - if you like the look. However, if you want a distinct color scheme, better to use plain sheet metal and have it powder coated, or do a high end paint job.

Glenn
the formation of 'rust' (oxide) has always depended on the grade of stainless you purchase.

Choose wisely grasshopper...
Too many things going on to bother listing them.

User avatar
pat1027
Posts: 333
Joined: Sat Oct 09, 2004 3:45 pm
Location: Michigan

Re: Boiler jacket finish

Post by pat1027 » Tue Dec 21, 2021 4:43 pm

hoppercar wrote:
Sat Dec 11, 2021 6:54 pm
........my question now is, once it's thoroughly cleaned, what can I spray it with, for a top coat, that will keep it shiny , that the coal ash and soot, won't impinge itself into ????
My dad used Rust Oleum finish with no top coat and I have done the same as I repaint things. Smaller parts go in the kitchen oven at the lowest temperature is can be set to for an hour or so. For cleaning I dust it off with a soft paint brush then gently wipe it down with a liberal coat of WD40 and a soft rag. I work in a small enough area to wipe it off before it dries and leave as little residue behind as possible.

Fresh paint while it looks and feels dry can actually take several days to off gas and cure. Additional coats applied too soon trap gasses beneath and can cause the top coat to be dull and soft.

Harold_V
Posts: 19351
Joined: Fri Dec 20, 2002 11:02 pm
Location: Onalaska, WA USA

Re: Boiler jacket finish

Post by Harold_V » Thu Dec 23, 2021 4:22 am

Glenn Brooks wrote:
Mon Dec 20, 2021 8:55 pm
SS will eventually rust.
If a 300 series is selected (it normally is) it won't rust if it is passivated before being placed in service. That should happen after ALL work is done in fitting the jacket. Rusting of austenitic stainless is caused by free iron on the surface. Passivation removes the iron and creates the impervious surface finish that prevents further rusting.

Note that the grades of stainless are strictly controlled (and certification is generally provided upon request) so the notion that the alloy has, somehow, changed, isn't true unless the material has been procured from a questionable source. Note, also, that if the finished surface is scratched by a ferrous source (after passivation), it may still rust, but only where the surface has been damaged. The rust is the result of deposited iron.

H
Wise people talk because they have something to say. Fools talk because they have to say something.

Post Reply