polishing dipped collars

Post your tech questions here, lots of knowledge available.
Post Reply
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

polishing dipped collars

#1

Post by ecblanks »

Finally got all the white paint off my early 220B. It's the dipped kind and it still has the globs and runs; how much of the rest is still there I don't know, but there isn't much rust either. Problem is, is tarnished something terrible. IT's almost black.
I've tried lye (to get the paint off), vinegar soak, barkeepers friend, motheres, and brasso. Still black. The polishes, like mothers and brasso, are not turning black on the rag.
What am I missing here?
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
User avatar
Tgarner01
Super Colemanaholic
Posts: 6375
Joined: Sun Nov 03, 2019 10:47 pm

Re: polishing dipped collars

#2

Post by Tgarner01 »

I would avoid the acids like citric and vinegar. They tend to eat away at most of Colemans plating it seems. I'm usually happy no rust myself 😁
Toby Garner, from SW Missouri
ICCC #1939
User avatar
Gavercronos
Serious Colemanaholic
Posts: 928
Joined: Sun Aug 17, 2014 2:53 pm
Title: Guy Who Does Stuff

Re: polishing dipped collars

#3

Post by Gavercronos »

To brighten tin or galvanizing the best way is to brush it. With steel bristles.
WillCat

Chautauqua County, New York
Slant Saver [svg] Frank MakerNew York State Route 5 marker

Wanted: GPA dated 5/89, 7D Mag-lite
My greatest fear is Flying Walruses with Tommy guns for Tusks.
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#4

Post by ecblanks »

Gavercronos wrote: Wed Jun 09, 2021 10:27 am To brighten tin or galvanizing the best way is to brush it. With steel bristles.
Not the same as steel wool? I hit with the 0000 and saw minimal improvement.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
MYN927
Serious Colemanaholic
Posts: 659
Joined: Sat Apr 07, 2018 8:31 am

Re: polishing dipped collars

#5

Post by MYN927 »

Tin coating? With all the globs and runs, I think its thick enough to withstand a little bit of aggression.
Scrub it under water with a coarse scouring pad just enough to remove the tarnish. Then finish off with finer steel wool.
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#6

Post by ecblanks »

MYN927 wrote: Wed Jun 09, 2021 3:56 pm Tin coating? With all the globs and runs, I think its thick enough to withstand a little bit of aggression.
Scrub it under water with a coarse scouring pad just enough to remove the tarnish. Then finish off with finer steel wool.
tried that with Barkeepers Friend and no improvement. I'm going to hit it again with oven cleaner since I think the paint protected it, and then may move to mechanical means (i.e. dremel buff).
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#7

Post by ecblanks »

Slightly different topic, don't you love it when you find the shadow of a number stamped into the bottom of your previously undated 220B, and the Dremel uncovers a "4"?
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
User avatar
SteveRetherford
Super Colemanaholic
Posts: 8548
Joined: Thu Dec 11, 2008 11:12 pm

Re: polishing dipped collars

#8

Post by SteveRetherford »

i use citric n get that black off with steel wool . but you cant just toss it in n walk away . you need to pull n wool it every few minutes till you have the desired look . to each his own style . i dont like over polished , or too much carbon n crud , but somewhere in the middle .
Steve , Keeper of the Light !!!
User avatar
Dremwolf
Colemanaholic
Posts: 294
Joined: Fri Jan 10, 2014 5:50 pm

Re: polishing dipped collars

#9

Post by Dremwolf »

Since no photos have been posted, dipped collars?
Ralph "Drem" Terreault, USAF Veteran, Help On The Homefront Rep, Patriot Guard Riders, Former Location Coordinator
Wreaths Across America, Jacksonville National Cemetery

275 Appreciation Syndicate Member #0328
Mil-Spec Ops #1988
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#10

Post by ecblanks »

Dremwolf wrote: Wed Jun 09, 2021 10:57 pm Since no photos have been posted, dipped collars?
Mine is not a good candidate for a photo(yet) but you can probably search the board and find others.
The collars were dipped in tin, instead of the later plating process, and you can see the resulting globs and runs on them that the dipping process unevenly left. Actually my 228B has them, too. I'll try to snag a picture when I get home.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
MYN927
Serious Colemanaholic
Posts: 659
Joined: Sat Apr 07, 2018 8:31 am

Re: polishing dipped collars

#11

Post by MYN927 »

You can apply the usual high strength paint stripper (the high VOC kind and acetone) to remove whatever leftover paint film on it which, might prevent any reactions with Barkeeper's Friend / oxalic acid.
Actually, I'd even use medium/fine grit sandpaper(under running water) to first remove all the protective film and black tarnish if that's really what I want. Finish off with finer stuffs later on.
Or I might just leave it alone if its not too bad looking.
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#12

Post by ecblanks »

I'm not looking for mirror-shine, just spiffed up a bit. Last night I did a 3 stage process in one spot that got me close: 1. Oven cleaner for about 1 hr 2) Dremel buff 3) Mothers. I believe there going to have to be some mechanical intervention at some point. The frame is a whole other disaster.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#13

Post by ecblanks »

Here's a couple of pics. YOu can see my "clean" spot in one. You can also see the globs of the tin runs at the bottom of the collar.
PXL_20210610_142849074.jpg
PXL_20210610_142853453.jpg
You do not have the required permissions to view the files attached to this post.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
MYN927
Serious Colemanaholic
Posts: 659
Joined: Sat Apr 07, 2018 8:31 am

Re: polishing dipped collars

#14

Post by MYN927 »

You're getting there. In my experience with both tin and solder coatings, I find that many acids and alkalis(lye, etc) actually dull and darken them further.
You're right about the mechanical intervention.
Another possible brightening means is to re-melt and re-flow the tin coat with plenty of flux to remove the oxidation but that could make the globs and runs even worse if you're not careful or skilfull at it.
User avatar
Coast_to_Coast
Serious Colemanaholic
Posts: 506
Joined: Thu Oct 11, 2018 11:35 pm

Re: polishing dipped collars

#15

Post by Coast_to_Coast »

I’ve had really good results after soaking a couple a few days in Evaporust, then 0000 steel wool followed up with Mother’s.
-Bird- Wisconsin
“I don’t want another lantern, I just want the last one again”
ICCC#1776     The Coleman Blue‘s 243’s #143
User avatar
Gunhippie
Super Colemanaholic
Posts: 7508
Joined: Sun Mar 06, 2016 8:10 pm

Re: polishing dipped collars

#16

Post by Gunhippie »

Your problem is that almost all the tin is gone. Only the drips and runs are left. My '34 was the same:

Image

I couldn't abide that look, but wanted to preserve the drips and runs, so I nickel-plated right over them and it came out pretty nice:

Image

Image

I've tried re-tinning with mixed results. Hot-dipping requires a lot of tin and prepping with hydrochloric acid, but does work. Electroplating requires less tin, but is pretty finicky. I tried electroplating this collar with tin and failed miserably, so nickel it was.

PS: Lye and weak acids will not hurt tin or nickel. I use them on almost everything. Any kind of acid will dissolve galvanizing, and lye will destroy cadmium on newer 200 frames.
It's priceless until someone puts a price on it.
Walk a mile in a man's shoes before you criticize him--then you're a mile away, and he has no shoes.
Texan's last words: "Y'all--hold my beer--I wanta' try sumptin'."
Timm--Middle of nowhere, near the end of the road, Oregon.
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#17

Post by ecblanks »

Thanks, Timm, I would love to get this replated, but...
The winner is... electrolysis!
Only a couple of hours with one turn and I was easily able to scrub the black off it with an SOS. Then gave it a finaly polish with some 0000
PXL_20210611_214319125.jpg
You do not have the required permissions to view the files attached to this post.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
User avatar
ecblanks
Super Colemanaholic
Posts: 1448
Joined: Fri Apr 29, 2016 9:31 pm

Re: polishing dipped collars

#18

Post by ecblanks »

Full writeup on this project will be done in Collections later this weekend.
Carlton
Coleman 275 Appreciation Syndicate # 0176
Slant Saver #29
Mil-Spec Ops #0973
ICCC Member #1892 (expired)
Post Reply