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Fire as paint remover?

Old 01-11-21, 09:12 PM
  #51  
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Originally Posted by Drillium Dude View Post
I have a frame I am seriously considering stripping, but it has a lot of chrome. Would a heat gun affect the chrome? The transitions from paint to chrome are over 12" in length so the chrome's gonna get heated up on this frame. But I recall the last time I stripped a frame with gel stripper; it was a mess and it didn't do a great job, either. Looking for a different approach this go around.

DD
DD,
I would depend on the temp. The exhaust caused some discoloration to the chrome on my exhaust tips.
I do not know at what temperature chrome will turn blue but I would be cautious using an open flame or a hi-temp heat gun.
Best, Ben
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Old 01-11-21, 09:29 PM
  #52  
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Originally Posted by Drillium Dude View Post
I have a frame I am seriously considering stripping, but it has a lot of chrome. Would a heat gun affect the chrome? The transitions from paint to chrome are over 12" in length so the chrome's gonna get heated up on this frame. But I recall the last time I stripped a frame with gel stripper; it was a mess and it didn't do a great job, either. Looking for a different approach this go around.

DD
Dunno, I've never worked on chromed metals before.
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Old 01-11-21, 09:57 PM
  #53  
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I have recently been researching stripping and restoring cast iron cookware and one of the methods presented was building a large fire and letting it burn down until you have a nice pile of hot coals. you then bury the skillet in the hot coals and let sit overnight. Once cooled off, pull the skillet out in the morning and wash, dry and begin the seasoning process.
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Old 01-11-21, 11:00 PM
  #54  
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Originally Posted by r0ckh0und View Post
I have recently been researching stripping and restoring cast iron cookware and one of the methods presented was building a large fire and letting it burn down until you have a nice pile of hot coals. you then bury the skillet in the hot coals and let sit overnight. Once cooled off, pull the skillet out in the morning and wash, dry and begin the seasoning process.
Cast iron is not the same as steel. Nor is a skillet a bicycle.
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Old 01-11-21, 11:11 PM
  #55  
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and, condescension is a real buzz kill
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Old 01-13-21, 08:45 AM
  #56  
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I pass on to you the title "Keeper of the Flame", the flame must never die. The life of our tribe is on your shoulders, do not let us down.
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Old 01-13-21, 09:03 AM
  #57  
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Originally Posted by Jicafold View Post
Let me clarify. The frame was above the fire, not in the coals. I heated one section at a time for about 1 minute, then removed it to scrape the paint in that section. Each section worked was roughly 6 inches long. The total process, section by section, took about an hour.
Even so, unless you were able to measure and control the temperature (in addition to knowing EXACTLY what kind of tubing it is), you're playing roulette. Sandblasting is safe, and cheap.
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Old 01-13-21, 09:30 AM
  #58  
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If fire is good for removing a dork disk, why wouldn't it work to strip paint?
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Old 01-13-21, 09:39 AM
  #59  
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Originally Posted by Jeff Neese View Post
Even so, unless you were able to measure and control the temperature (in addition to knowing EXACTLY what kind of tubing it is), you're playing roulette. Sandblasting is safe, and cheap.
It was Columbus SL. I posted the bike specs previously in message #4.
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Old 01-13-21, 10:42 AM
  #60  
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Originally Posted by Jicafold View Post
It was Columbus SL. I posted the bike specs previously in message #4.
So based on that knowledge, it should be possible to know how you affected the properties of the steel, assuming that you carefully measured and controlled the temperature, the exact length of time it was subjected to that heat, and carefully controlled the quenching process.

Otherwise I personally wouldn't trust that frame, but it might be fine for a neighborhood knock-about or or grocery-getter that doesn't get much stress placed on it. I wouldn't get too far from home with it.
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Old 01-13-21, 10:54 AM
  #61  
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I think I'm going to paint it, build it, and ride it.
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Old 01-13-21, 02:10 PM
  #62  
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Originally Posted by Jicafold View Post
I think I'm going to paint it, build it, and ride it.
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Old 01-13-21, 02:15 PM
  #63  
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One thing I have discovered of late - if you want to remove powder-coat - fire is definitely the way to go!
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Old 01-13-21, 04:53 PM
  #64  
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Originally Posted by cyccommute View Post
Nor is a skillet a bicycle.
Insert Schwinn Varsity humor here. ​​​​​​​​​​​​​​
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Old 01-13-21, 06:33 PM
  #65  
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Originally Posted by Jicafold View Post
I think I'm going to paint it, build it, and ride it.
you rebel you!!
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Old 01-13-21, 06:48 PM
  #66  
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Originally Posted by Reynolds View Post
If fire is good for removing a dork disk, why wouldn't it work to strip paint?
You're making me all nostalgic for the good ol' days around here

DD
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Old 01-13-21, 06:56 PM
  #67  
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To the OP, @Jicafold

Keep in touch... update this thread from time to time as to how you are doing.

Otherwise we're going to think you flamed out on that frame...

woof!
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Old 01-13-21, 06:56 PM
  #68  
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Originally Posted by Jicafold View Post
I had originally used the Aircraft paint stripper on other frames, but it turned dark in color for some reason and stopped working so threw it way. The 2 strippers I used on this, prior to fire, were The Kwik-Strip in the Blue can and the Jasco in the red can. I mentioned this in post #1 but here is a photo.

Coat it with stripper then wrap it with cling wrap... Stripper will work heaps better as it won't dry out.
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Old 01-13-21, 06:59 PM
  #69  
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Originally Posted by Trevtassie View Post
Coat it with stripper then wrap it with cling wrap... Stripper will work heaps better as it won't dry out.
Thank you. I think I will try that.
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Old 01-13-21, 10:51 PM
  #70  
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when I'm fixing a frame I burn the paint off with my torch in the affected area and then mechanically remove what's left. It really doesn't heat up the frame that much.

Probably why my asthma never gets better.
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Old 01-13-21, 11:28 PM
  #71  
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Just paint it and ride it . If it makes some weird creaking noises then you worry, until then go for it.
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Old 01-13-21, 11:30 PM
  #72  
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i have a chrome fork i had dechromed and some canti bosses brazed on. the base nickel plating is still intact and only oxidation is where the plating was ground off to braze the bosses. iow's, even with all that heat being centralized and the plating surrounding the bare areas, the plating looks untarnished. but, it's probably gonna fail because it got hot
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