Jump to content
Model Cars Magazine Forum

Paint stripping discovery?


Recommended Posts

Last week I wanted to strip a ~35 year old Tamiya M23, and I found a new (?) way to do that. First I tried sodium hydroxide (NaOH) oven cleaner / drain opener, my classic method, that worked well but slow. I tried my ultrasonic bath, but that had hardly any effect.

Out of curiosity I tried the combination too, with the sodium hydroxide in a separate container suspended in the ultrasonic cleaner. And that worked very well: all paint and decals were removed in 10-20 minutes, without the need for scrubbing. Everything was completely clean without any effort. Interestingly all glue joints also broke down during the paint stripping, a unexpected but nice benefit.

Rob

m23-01.jpg

m23-09.jpg

m23-10.jpg

 

 

 

Link to comment
Share on other sites

Can you please show your method and what product you used?  I've got duplicolor I'm trying to strip off a starsky and hutch car, tried totally awesome, nada  trying the barbecue black can of easy off oven cleaner and so far nada. 

Link to comment
Share on other sites

6 minutes ago, kittesvsr71 said:

Can you please show your method and what product you used?  I've got duplicolor I'm trying to strip off a starsky and hutch car, tried totally awesome, nada  trying the barbecue black can of easy off oven cleaner and so far nada. 

Rob. I'm sure we'd all like to see your method in a brief tutorial perhaps?

Jeff. Duplicolor lacquers are very tough stuff. 90% isopropyl alcohol does work. I recommend though, you use the old Super Clean degreaser BUT first sand through to the primer in a half a dozen spots on the body. Let the chemical attack the primer. After a week or so, the lacquer should slough off like a snake skin.

Link to comment
Share on other sites

Robdebie, can you show how you did it?? I have an ultrasonic jewery cleaner that I got at the resale store for  this very purpose! maybe I  can put the purple pond stuff in there and let the ultrasonic waves do the removal for me!!!!!!!!!!

Link to comment
Share on other sites

Jantrix - Thanks for that =)  I used easy off oven cleaner and that didn't help even though I sanded prior to that.  But I used my backup of the Scale Coat Wash Away Paint Remover and it took the paint right off the hood and tamiya white lacquer primer as well in 10 mins!  =)  That stuff is well worth its weight in gold but wish it wasn't so expensive. 

Link to comment
Share on other sites

8 hours ago, kittesvsr71 said:

 Scale Coat Wash Away Paint Remover and it took the paint right off the hood and tamiya white lacquer primer as well in 10 mins!  =)  That stuff is well worth its weight in gold but wish it wasn't so expensive. 

Yes, it is, but it is reusable. :)

Link to comment
Share on other sites

10 hours ago, kittesvsr71 said:

Jantrix - Thanks for that =)  I used easy off oven cleaner and that didn't help even though I sanded prior to that.  But I used my backup of the Scale Coat Wash Away Paint Remover and it took the paint right off the hood and tamiya white lacquer primer as well in 10 mins!  =)  That stuff is well worth its weight in gold but wish it wasn't so expensive. 

I looked this up. Any reason for all the colors?

 

Link to comment
Share on other sites

On 5/20/2019 at 3:32 PM, kittesvsr71 said:

Can you please show your method and what product you used?  I've got duplicolor I'm trying to strip off a starsky and hutch car, tried totally awesome, nada  trying the barbecue black can of easy off oven cleaner and so far nada. 

I used a 10% NaOH drain opener. It's a Dutch brand, so you'll have to look for a local equivalent. Please note that my model was painted with enamels (Humbrol), and I don't know how effective the method is for other paint types.

Rob

Link to comment
Share on other sites

On 5/20/2019 at 5:38 PM, paul alflen said:

Robdebie, can you show how you did it?? I have an ultrasonic jewery cleaner that I got at the resale store for  this very purpose! maybe I  can put the purple pond stuff in there and let the ultrasonic waves do the removal for me!!!!!!!!!!

Here are a few photos.

Shown below are the two main ingredients: sodium hydroxide (NaOH, lye and caustic soda in the US) and an ultrasonic cleaner. I used a drain opener that is a solution of approximately 10% NaOH in water and probably nothing else. I diluted it further down by adding water, to maybe 5%.

ultrasonic-01.jpg

From what I read, stainless steel is not attacked by NaOH below 65C, but still I put the NaOH solution a separate plastic container, suspended in the metal wire basket that comes with the ultrasonic cleaner. There are no liquids in the photo, I did not want to get my photo set-up wet!

ultrasonic-02.jpg

I think the wire basket can be left out, with the plastic container with NaOH solution directly in the water of the ultrasonic cleaner.

ultrasonic-03.jpg

There's not much to tell about it... Try it! And be careful with the NaOH: your eyes at risk, use safety glasses.

Rob

Link to comment
Share on other sites

  • 1 month later...
On 6/26/2019 at 1:19 AM, hotrodblder said:

Now I have an excuse to drag my ultrasonic cleaner out of the closet. I have a ton of things that need the possible chance of being stripped quicker than the normal hurry up and wait session.

Please let us know the results! I will demonstrate the technique at the next club meeting - I hope it works as well there as at home  :-)

Rob

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...