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Topic Review (Newest First)
03-28-2013 04:15 PM
Tommygunn I have a problem with my Lafette 42 restoration.
After stripping the paint and washing off the stripper I'm having big problems with corrosion. Now, I've got the Phosphoric Acid to get rid of the rust but the problem arises when I want to wash it off as it is basically water based and if I use water to wash it off then it just flash corrodes again, therefore, I wanted to use a spirit/oil based wash.

I've tried Nitro Cellulose, denutured alcohol but, of course, that is how I found out PA is water based as it does not mix, or rather, wash off.

Any ideas on how to wash off a water based rust killer without coroding the steel?

Tom.
03-06-2013 04:54 AM
Tommygunn Gearheadslife,
Powder coating is out of the question, this is going to be a 1941-1943 factory finish.

One other question to everybody. I've had some paint made up, see the photos below, which is slightly too light when compared to the original samples.
Can I simply add an amount of black to achieve a match and, if so, would a 60cc (60ml) sample bottle be sufficient to darken 500ml of the paint.

Cheers,
Tom.

02-27-2013 08:03 AM
gearheadslife don't know how anal you are going to be with paint match, (do you have the formula, or playn by ear) BUT..
have you thought of a diy powercoat set up..
the tripot parts will be small enough to bake in a oven..
02-27-2013 07:35 AM
Tommygunn Techron,
You didn't read my original post did you?

I am restoring the tripod.

It is an MG42 used by the German army from late 1942 onwards.

"I Repeat, DO NOT PAINT IT. You will destroy the value".
What can I say, as the owner of a genuine 1944 Gustloff Werke MG42, 1943 Lafette 42, Mgz34 optic and accessories.

I have no spare barrels and it is a UK deactivated weapon.

It definately does not belong in a museum where it would get a nice sheen of rust and a covering of dust. Museums generally do not give a monkeys about their stock. The best stuff is in private hands where it is well cared for.

Tom.
02-27-2013 05:08 AM
techron
Quote:
Originally Posted by Tommygunn View Post
This is not car related at all but since it does concern spray painting I thought I might be able to gain some advice.
I am in the process of restoring my German, WW2, Lafette 42 tripod back to its original colours. The base coat is going to be a couple of coats of red oxide then on top there will be a couple of coats of RAL7021.
Therefore, I have a few of questions.
I am looking at one of the Ebay cheapo specials either a mini or a full size gun.
1) Since I am using 50:50 mix on the red oxide and RAL7021 cellulose paint would it be okay to use a mini gun with a 0.8mm needle or would I need to up it to a 1.2mm or larger, remembering that the finish does in no way have to come close to that of a pro, civvy vehicle.
2) Since the area to paint is mainly comprised of tubes, and or similar (see image below), then would a 0.8mm nozzle give sufficient spread for my needs?

Below is the tripod that I'm restoring, everything in green will be redone:

Cheers,
Tom.


HOLY CRAP, That is a MG44 used by the german army late in WW2.

The American troops hated it because of it high rate of fire.
Do not paint it!!!

It has way more value in it's origonal form/finish.

Do you have any extra barrels??? those got changed out due to high rate of fire in the heat of battel. It took like 5 seconds to change out the barrel.

I Repeat, DO NOT PAINT IT. You will destroy the value.

That gun would spit out 1200 rounds per minute.

It belongs in a musium...
02-27-2013 02:26 AM
Tommygunn 69,
Thanks for the advice. I won't be getting rid of any imperfections as this is a piece of 1943 German hardware and the imperfections are what make it what it is.

Mitmaks,
Thanks for the link.

Tom.
02-22-2013 10:53 AM
mitmaks I'd get a mini spray gun, like this one for example Mini Detail Touch Up HVLP Spray Gun w 1 0 Tip Auto Car Paint Spot Repair | eBay
I once sprayed entire bumper cover on my daily driver with it.
02-22-2013 09:01 AM
69 widetrack If you haven't already bought the red oxide, or even if you have, you may save yourself a lot of aggravation by using a catalyzed epoxy primer and then top coating it with your RAL 7021...This way you get protection and if you buy the epoxy that can be sanded you can use it as a build primer and get rid of any imperfections in the metal...just a thought.

Ray
02-22-2013 08:49 AM
Tommygunn Sam,
As far as paint compatibility goes, I will be doing some extensive tests for which I've already painted up some steel plate in varying thicknesses of red oxide.

Tom.
02-22-2013 08:46 AM
oldBodyman "The red oxide is actually not compatible with the cellulose/lacquer paint as it needs to be mixed with White/Mineral spirits"

"..I would be looking for a primer that is comapatible to the paint.."

+1
those two paints will not work well together, blister like paint stripper.
the mini-type spray gun you linked to will work well for this.
02-22-2013 08:36 AM
OneMoreTime I would be concerned about the compatibility of the materials..I would be looking for a primer that is comapatible to the paint..Sometimes guys doing restorations make issues for them selves in devotion to perfection..

Sam
02-22-2013 08:19 AM
Tommygunn Ray,
The red oxide is actually not compatible with the cellulose/lacquer paint as it needs to be mixed with White/Mineral spirits so I realise I'll have to go steady and dust the first layer or two of the cellulose/lacquer paint so as not to blister it.
Both paints as they stand, i.e. unthinned, are of a similar viscosity.


Sam,
The main reason why I was looking at the touch up gun is because the tripod will be sprayed stripped down so the majority of parts are no wider than about an inch and a half.

The mini type I'm looking at is one of THESE.

The full size is one of THESE, which I think is a spit for one of the HF guns.

The mini types are cheap and it will be only a one-off show.

Tom.
02-22-2013 07:26 AM
OneMoreTime One of the harbor freight purple guns would be fine..I have one that does a nice job..bought it to try as a lot of the guys were talking about them..They are not very spendy..

Sam
02-22-2013 07:17 AM
69 widetrack
Quote:
Originally Posted by OneMoreTime View Post
I would use my regular gun..I suppose you will paint the pieces and then assemble it..

Sam
I agree with you...if it was me painting the piece of artillery I would use my regular gun as well. The OP however is looking at buying a cheap paint gun from Ebay...I just thought that if this was a one off...a touch up gun would do the job for him and be cheaper as well.

Ray
02-22-2013 07:02 AM
OneMoreTime I would use my regular gun..I suppose you will paint the pieces and then assemble it..

Sam
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