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Old 09-24-2014, 12:50 PM   #197
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One neat trick with valve covers like these is you can put a coat of power on, cure it, and then take a die grinder with a gasket cleaning disk and grind of the tops of the fins, and then put a coat of clear on the whole valve cover. It comes out very nice.
Yup, that is the plan... Like these I did before...

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Old 09-24-2014, 01:23 PM   #198
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Yup, that is the plan... Like these I did before...

outstanding.
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Old 09-26-2014, 07:06 PM   #199
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Today's progress...

Prepped and ready.


Gloss black powder on...


Into the oven it went.... only just fits, that why it is suspended like this... the back edge hits the back wall, but only where its not coated!


Flowed out at 450F.


After 20 mins at 400F, it was left to cool... a couple of porous spots despite preheating to 500F, but they will be hidden.


Some detail work, and its almost finished... onto #2.
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Old 09-26-2014, 09:39 PM   #200
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Originally Posted by Keyair View Post
Today's progress...

Prepped and ready.


Gloss black powder on...


Into the oven it went.... only just fits, that why it is suspended like this... the back edge hits the back wall, but only where its not coated!


Flowed out at 450F.


After 20 mins at 400F, it was left to cool... a couple of porous spots despite preheating to 500F, but they will be hidden.


Some detail work, and its almost finished... onto #2.

Very Nice!
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Old 10-08-2014, 07:09 PM   #201
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#2 done...
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Old 10-09-2014, 02:37 PM   #202
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So, here we go...
Back onto Headlamp housings.
These are huge aluminum castings...

Prepped and ready... had pre-conditioned casting at 500deg for 30 mins to try to outgas and burn of impurities... common suggestion when doing this type of piece... it was smoking alright!


Laid down a pretty thick coat of gloss black powder.


Getting this thing into my oven was a tight squeeze... I did 2x prep/positioning runs beforehand... only about 1/4" clearance all around!


Took almost 30 mins for casting to get to 400f and the powder to flow out... thise things have a lot of mass! Then another 30 mins to cure.

About 2 hours later, it had cooled enough to take it out... with welding gloves on!


Having had my previous experience with the futility of getting a good shine on these castings, I am going to bring the highlight areas to a brush finish... I think the contrast with the black and polished surfaces is good.

Almost done... just a little flow work on the radiused sections.
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Old 10-09-2014, 05:36 PM   #203
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So, here we go...
Back onto Headlamp housings.
These are huge aluminum castings...

Prepped and ready... had pre-conditioned casting at 500deg for 30 mins to try to outgas and burn of impurities... common suggestion when doing this type of piece... it was smoking alright!


Laid down a pretty thick coat of gloss black powder.


Getting this thing into my oven was a tight squeeze... I did 2x prep/positioning runs beforehand... only about 1/4" clearance all around!


Took almost 30 mins for casting to get to 400f and the powder to flow out... thise things have a lot of mass! Then another 30 mins to cure.

About 2 hours later, it had cooled enough to take it out... with welding gloves on!


Having had my previous experience with the futility of getting a good shine on these castings, I am going to bring the highlight areas to a brush finish... I think the contrast with the black and polished surfaces is good.

Almost done... just a little flow work on the radiused sections.
I'm glad you back at work on the motor home. I get tired of reading my own project build. I'm glad that someone else has the same sickness I do.

Have you thought of putting a coat of clear (powder coat) on top to keep the air away from the bare aluminum?
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Old 10-09-2014, 06:34 PM   #204
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I'm glad you back at work on the motor home. I get tired of reading my own project build. I'm glad that someone else has the same sickness I do.

Have you thought of putting a coat of clear (powder coat) on top to keep the air away from the bare aluminum?

I hear ya Glenn.

Yes, but my first try at clearcoat was not good... came out all opaque... put too much on I think...

Suggestions?
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Old 10-09-2014, 10:43 PM   #205
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I hear ya Glenn.

Yes, but my first try at clearcoat was not good... came out all opaque... put too much on I think...

Suggestions?
I put clear on just about everything I do because it gives it depth and adds gloss. The only stuff I do not put clear on is flat or semi gloss.

You have to put enough on for it to flow out, if not it comes out looking like dry over sprayed paint.

Is you clear white before you cure?

Mine is and I put enough on so you cannot see the base color through the uncured clear.

My clear comes out clear and very glossy.

I have cleared raw polished aluminum and it comes out almost as shinny as with out the clear, but not quite a shinny as with out the clear. Not that noticeable, but if you put a cleared piece next to an uncleared piece you would see the difference.

It does sound like you might have put to much on.
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Old 11-22-2014, 11:45 AM   #206
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New to Everything!!!!

High All,
I'm about to take possession of a 1992 350 LE. I'm new to RVing, this site and this thread. This is my test post so I'm gonna bookmark it so I can get back to it and contribute.

Keep on truckin!!!

Malcolm
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Old 11-22-2014, 01:09 PM   #207
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High All,
I'm about to take possession of a 1992 350 LE. I'm new to RVing, this site and this thread. This is my test post so I'm gonna bookmark it so I can get back to it and contribute.

Keep on truckin!!!

Malcolm
Hi Malcom,
This site is more generalized, but useful because it great to see what other brands and owners are doing with their rigs. I find it adds inspiration to my build, and hope that mine reciprocates.
There is much crossover too, with the P30 chassis being used on many MH's of the era.
For much more specific info, check out Airforums.com, in the Airstream Classic Motorhome forum.
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Old 11-23-2014, 07:49 PM   #208
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Malcom, on this forum you can SEARCH for almost anything. Even SEARCH for yourself by clicking on the icon for your handle, and click on the show me what this guy has posted before.

Great site. Great information.

Welcome

ronspradley
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Old 02-06-2015, 04:44 PM   #209
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Beautiful

Wow, you have done a nice job on the finish. How much time would estimate it took from start to finish?
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Old 02-14-2015, 04:54 AM   #210
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Great Work!

I have owned 2 Airsteams, TT not MH.
Love the work you are doing.

John
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