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SP3 Full restoration as it happens
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Ralph Laughton


Hero Steamer


Joined: 20 Apr 2009
Posts: 1982

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Location: London, England

PostPosted: Tue Sep 25, 2012 5:18 pm    Post subject: SP3 Full restoration as it happens Reply with quote

Tuesday 25th September

Today I received a SP3 from an ebay win, see HERE . It had obviously been over heated and boiled dry. Time to investigate.

After stripping off all the easy bits...



...removing the chrome cover and unsoldering the stem pipe from the cylinder block, it was obvious the stem pipe had become de-soldered from the boiler when it had boiled dry.  



The pip was loose but it would not come out of the boiler being held in by a lump of solder on the inside.



A wash in soapy water removes all the soot and made it look a lot better but just look at that sight glass. The sight glass and bezel was removed while the boiler was still assembled making the next step easier.



After removing the end cap (using the wire coat hanger and big blow torch method) the inside looked better than I had expected. The steam pipe was removed and it was ready for a clean up but first the rest of the engine needed stripping.



Drilling rivets is much easier if the drill bit is lubricated. I use oil sometimes but beeswax is much less messy. I make small tablets by melting a lump of beeswax in a night-light case and pushing it out once it has cooled and set hard. You can then return the case to the night-light!



Ironically the one thing to survive the toasting was the warning sticker.



That's it for today - I'll tackle the cleaning and paint stripping tomorrow. Time for a beer

Ralph
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Last edited by Ralph Laughton on Sat Sep 29, 2012 7:03 pm; edited 4 times in total
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Mamodman123


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Joined: 19 Jul 2006
Posts: 40400

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Location: Midlands, UK

PostPosted: Tue Sep 25, 2012 5:25 pm    Post subject: Reply with quote

Shame about the sightglass but it's a pretty easy repair.

I always use heat proof silicone on the sightglasses that require rivets. Sometimes when they are riveted back together they leak otherwise.
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Solid Fuel tablets explode

You could get a nice flatbase for that



Keep calm and pass to Wilf
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MrMamod


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Joined: 03 Jan 2010
Posts: 30534

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Location: Hereford

PostPosted: Tue Sep 25, 2012 6:32 pm    Post subject: Reply with quote

Hell Ralph they must of had a fair amount of heat to melt the sightglass that much     .
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doug


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Joined: 26 May 2010
Posts: 881

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Location: grandview,mo

PostPosted: Tue Sep 25, 2012 10:22 pm    Post subject: Reply with quote

Don't look to bad..But bad enough....
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loose nut 45


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Joined: 12 Apr 2012
Posts: 4672

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Location: Wisbech Cambridgeshire

PostPosted: Tue Sep 25, 2012 10:27 pm    Post subject: Reply with quote

Look like the making of a good resto thread Gonna watch this with interest.
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MrDuck


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Joined: 05 Mar 2010
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PostPosted: Wed Sep 26, 2012 9:40 am    Post subject: Reply with quote

A worthy subject
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Wallace


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Joined: 19 Jul 2006
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Location: New South Wales, Australia

PostPosted: Wed Sep 26, 2012 10:10 am    Post subject: Reply with quote

That'll turn out very nice  
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Andrew
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Ralph Laughton


Hero Steamer


Joined: 20 Apr 2009
Posts: 1982

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Location: London, England

PostPosted: Wed Sep 26, 2012 10:16 am    Post subject: Reply with quote

Wednesday 26th September AM



I wasn't planning on posting anything this morning but I thought thought this needed saying...

Yesterday afternoon I posted saying I had just ordered some parts from 'my supplier' This was a bit of a cheeky comment as I have only used them once before. As they were extremely helpful last time I decided to order the sight glass and a few other bits and pieces.



This morning at 10.30 the postman delivered my order - Brilliant service. So I thought I would let you know the name of "My Supplier" and thoroughly recommend them. They also have an interesting website full of hints and tips.

They are Model Enthusiasts and they can be found here:

www.modelenthusiasts.com

I will post more progress later today...

Ralph
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MrMamod


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Joined: 03 Jan 2010
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PostPosted: Wed Sep 26, 2012 10:26 am    Post subject: Reply with quote

Good quick service there Ralph and Model Enthusiast is a member on here       ..
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Ralph Laughton


Hero Steamer


Joined: 20 Apr 2009
Posts: 1982

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Location: London, England

PostPosted: Wed Sep 26, 2012 10:39 am    Post subject: Reply with quote

MrMamod wrote:
Good quick service there Ralph and Model Enthusiast is a member on here       ..


Yes, he has a link on his site back here, keeps it all in the family so to speak.

Ralph
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Daveyp2


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Joined: 04 Feb 2012
Posts: 1079

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Location: Leicester, England

PostPosted: Wed Sep 26, 2012 2:25 pm    Post subject: Reply with quote

yes i like this company too, i have bought from them a few wilesco bits. If you look they have some good advice on soldering etc as well and some amusing product descriptions.
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David

I have no blood, only oil and steam in me.

www.d-t-s.co.uk
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Ralph Laughton


Hero Steamer


Joined: 20 Apr 2009
Posts: 1982

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Location: London, England

PostPosted: Wed Sep 26, 2012 8:05 pm    Post subject: Reply with quote

Wednesday 26th PM

Time to start the cleaning up. First job is to clean up the parts to be painted. In this case that means the grey base and the firebox.  A good brush out with a stiff brush and then a degreasing using white spirit. Mustn't forget to remove that label



Although the chrome cover is not going to be painted, it was degreased while I was cleaning the other parts.



Now, cover your monitor if the better half is about because the next bit could be misconstrued as Washing up But the parts need a wash in soapy water to remove any traces of solvents before paint stripping.



The grey paint will strip with a commercial stripper. It is coated with a good thick coat of the stripper...



...and placed in a plastic bag to fume for a few hours.



The firebox is a different matter. Nothing seems to touch it so it is back to mechanical removal - wet 'n' dry.



While the stripping is happening the boiler is being de scaled in a jar full of vinegar.



That's it for tonight, I'll show you the results of the stripping and de scaling tomorrow.

Ralph
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MrMamod


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PostPosted: Wed Sep 26, 2012 9:00 pm    Post subject: Reply with quote

Now i have used the modern Nitromors and it is CRAP - Perhaps where i am going wrong is not putting it in bag to bake for a few hours BUT the stuff used to great and would start to remove paint as soon as it was applied to the paint.
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Ralph Laughton


Hero Steamer


Joined: 20 Apr 2009
Posts: 1982

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Location: London, England

PostPosted: Wed Sep 26, 2012 9:36 pm    Post subject: Reply with quote

MrMamod wrote:
Now i have used the modern Nitromors and it is CRAP - Perhaps where i am going wrong is not putting it in bag to bake for a few hours BUT the stuff used to great and would start to remove paint as soon as it was applied to the paint.


The new stuff is OK but you have to keep it from drying out. There are other things to use and I will show you some on other restorations - Older paint is made up from different pigments, carriers, fillers and solvents. This means you can destroy their structure with less complicated products. Some modern paints are almost impossible to strip with anything available to us mere mortals.

One of the other problems is the legislation regarding labelling. Products have to be use-specific so manufactures can't tell you that brake fluid can be used to remove paint from polystyrene (like Airfix kits) without damaging the plastic - but I can! There are plenty of other every-day products that find there way into my workshop, like vinegar etc.

Ralph
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H2o vapour


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Joined: 16 Feb 2007
Posts: 5436

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PostPosted: Thu Sep 27, 2012 6:51 am    Post subject: Reply with quote

Interesting thread Ralph,

Very good info and I appreciate your knowledge and experiance, which is invaluable in doing this sort of thing, point is that we all do things differently,  to get to the same, end result. Some get there much faster and easily thatn others!

I like the Bees wax tip for the drill, I'll try that.

Also, I very much like restoration, my favourite bit is building the models back up, but you have to get through the 'paint stripping stage' to get there which I hate.

So I'm interested in anything paint stripping. I have used many products with differing results, but never had the inclination or forthought to use a plaggy bag -  

Good thread Ralph, thanks

H2o
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