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Old Jul 13, 2010, 02:27 PM
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looks super

nice work. I'm putting together my spray equipment to spray duratec primer, first time using it, so it'll be a process. my plug is much smaller, without the built it tail.

following...

ben
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Old Jul 13, 2010, 03:31 PM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
4,017 Posts
Well.......
Black was becoming more beautiful until....
In my rush to gather some momentum, I turned the heat gun on to speed up the drying times between wax coats!
And...
You guessed it!
I have some heat "bubbles"

The right thing to do is to strip it all down,
Apply a skim coat and spray again!
sand again,
Spray again,
Flat down again and wax!

Is it worth it?
The worst area is the one side of the tail where I used depron on a balsa stringer. Obviously more heat sensitive!

I'll sleep on it!
I have to go out of town tomorrow for the day,
sooo...
food for thought!
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Old Jul 13, 2010, 04:42 PM
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worth a try...

to salvage it... if there are any small remnants in the resulting mold, maybe you could polish them out, or just live with them?

you can go through the whole process and consider it a 'learning mold'.

been there myself, and I got stymied and didnt get back to it.

Ben
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Old Jul 13, 2010, 06:50 PM
Building with TLAR precision
Zenmaniac's Avatar
near Madison, WI
Joined Jan 2009
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Quote:
Originally Posted by skinnydoc View Post
nice work. I'm putting together my spray equipment to spray duratec primer, first time using it, so it'll be a process. my plug is much smaller, without the built it tail.

following...

ben
Pictures, skinnydoc!
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Old Jul 13, 2010, 11:24 PM
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alexhaben's Avatar
Eureka, CA
Joined Nov 2008
429 Posts
Quote:
Originally Posted by johannlochner View Post
Well.......
...I have some heat "bubbles"...
Its pretty hard to see the defects on my computer, are they blisters or craters? If they are craters you could try splooging in some clear coat and sanding flush and then polishing. Good luck.
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Old Jul 14, 2010, 12:17 AM
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pics of progress ... slow

I laminated my foam and shaped it with a razor knife, then sanding block. I'm thinking of doing a horizontal seamed pod, with the wing seat being open. I'll then glue in a ply former and bolt the wing to it with a nylon bolt.

I put a layer of 2oz glass on my pod with 3m77, then heated laminating resin to try and get a smooth layer. Then I did a layer of laminating resin and microballoons, which I sanded reasonably smooth. The glass gives the foam strength, and the epoxy/micro is a filler of sorts, but also protects the foam from the nasty surfacing primer.

I'm a definite newb sprayer, so maybe you all can help me get better. I used this hvlp detail gun. I'm using duratec 2 part surfacing primer . I used MEK to thin it some. I'm also using full tyvek suit, gogles, respirator, hat and gloves, and spraying outside. I did a light first pass, let it flash for a few mins, then did a few heavier coats. See the orange peel in the pics. In the past I've just sanded this out, and after a few coats end up with a great finish, but its LOTS of work. I'm assuming if done right, the coat will flow and be shiny, requiring much less finish work. Any help appreciated.

Finally, there's my depron tail I bagged up. It started out at 1g 3mm depron shape, after bagging with 1.7carbon its 11g. Not sure if that'll work. But it looks pretty nice!

If I can get this primer thing working I can move on to molding my pod.

Ben
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Old Jul 14, 2010, 01:19 PM
.....till the wind drops.
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Port Elizabeth, South Africa
Joined Oct 2006
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Thumbs up Ben!! Well done!! Keep going!!
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Old Jul 14, 2010, 01:34 PM
Stirring the pot
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Port Elizabeth South Africa
Joined Jun 2008
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Definitely very impressive Ben!!
++A1 to Sean's comment
She looks as if she's ready to take to the sky!
And here I was...
wondering...
If all the aspiring builders had abandoned their builds.
Leaving me to entertain myself!
(problems and all)

Sooo...
Not to be outdone,
I'll fix my troublesome child!
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Old Jul 14, 2010, 03:02 PM
Stirring the pot
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Port Elizabeth South Africa
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Originally Posted by alexhaben View Post
Its pretty hard to see the defects on my computer, are they blisters or craters? If they are craters you could try splooging in some clear coat and sanding flush and then polishing. Good luck.
Some blisters...
Some craters (dents)

I see some of us have been there too!
Or were those sink holes?
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Old Jul 14, 2010, 04:03 PM
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Eureka, CA
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Quote:
Originally Posted by johannlochner View Post
Some blisters...
Some craters (dents)

I see some of us have been there too!
Or were those sink holes?
Yep been there done that and still doing it to a small degree, the problems with being a perfectionist. I'm sure your next paint job will be fantastic Johann, the finish always seem to get better each time you have to sand and paint again, maybe its all the blood, sweat and tears filling up the voids.
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Old Jul 15, 2010, 02:55 AM
Stirring the pot
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Port Elizabeth South Africa
Joined Jun 2008
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Hi Ben
Won't you please weigh your tail for me...
I want to be able to compare weights once you finish your pod and look at the collective weight comparison.
As you know, mine is all in one.
Thanks
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Old Jul 19, 2010, 04:46 PM
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Port Elizabeth South Africa
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We're still here!
Just caught up a bit trying to finish off the last two Wazabi's...

Just about there!
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Old Jul 19, 2010, 04:51 PM
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tail wt....

is 11g for my carbon jobbie. I'll try to make lighter one too sometime soon, including a balsa and light glass version.

I'm working on the pod now, I hope to make the first mold half tonight. My skills are very new there, but rather than obsess, I'm going to just do it.

Ben
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Old Jul 19, 2010, 05:02 PM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
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She's Fixed!

It didn't take long and would have worried me if I had left her with some warts!
I'm not to sure if I want a small canopy or a slip on nose cone...
So I'll try both!
The nose cone is virgin territory....
I think one would need joggle joints???

I'll have to create openings to work the seams, so a canopy will work.
The canopy has been marked and masked out ready for the Gel coat.

In a momentary thought, I nearly used some tooling gel I have on the shelf.
(bought erroneously)
But...
I remembered Adam's advice...
Don't!!!
Soooo...
I decided not to take a chance!
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Old Jul 19, 2010, 05:09 PM
Stirring the pot
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Port Elizabeth South Africa
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Quote:
Originally Posted by skinnydoc View Post
is 11g for my carbon jobbie. I'll try to make lighter one too sometime soon, including a balsa and light glass version.

I'm working on the pod now, I hope to make the first mold half tonight. My skills are very new there, but rather than obsess, I'm going to just do it.

Ben
Thanks Ben
I must say, it's a novelty working on such a small scale...
Less sanding, rubbing and glassing!
I find myself making up portions of resin etc far in excess of what I need!

Time will tell if I can get my stubby fingers into all the tight seams!!
No inflation bladders for me...
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