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HelicopterScale Model RC Helicopters Docs  H-34 Doghouse
12-30-2016 02:53 AM  10 months agoPost 1
Keygrigger

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Mississauga, Ont.​Canada

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As a couple of you know, I got an H-34 doghouse to play around with to try and create the vents. This is quite an undertaking as most of the work is in the blending and putty work. The main structure of the vents did not take too much time to put together and they are very simple to create. This is for a 1/6th scale version and I had thought that the vents would be much higher than they turned out to be. The material is nothing more than 3mm PVC form board used for outdoor signs. There are thirteen rows divided down the middle (the upper two are not even opened)and the entire length is about 140mm. The putty is Squadron Products fast drying putty but I think it may be past its prime. I forgot to get some fresh putty this afternoon but I can get by for tonight. I know I am going to be sanding forever, lol. Take care.

Don

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12-30-2016 03:14 AM  10 months agoPost 2
Mojave

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Palos Verdes, Ca.​USA

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Looking good Don. You've been awful quiet lately... Who's H34 are you working on?
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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12-30-2016 04:09 AM  10 months agoPost 3
Keygrigger

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Mississauga, Ont.​Canada

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It's for Darrell. I've been active posting on a few other forums but not so much this one or SRCH. It does get tiresome posting where very few are looking in on the progress. Hope we get together soon.

Don

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12-30-2016 07:01 PM  10 months agoPost 4
Keygrigger

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Mississauga, Ont.​Canada

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Steve, these are for you. From the last picture to this one, maybe 8 hours of sanding to get it to the last three. There is a subtle difference between the first and second pictures which took about 9 hours of waiting for the filler to fully cure on its own. I am going out to get some fine spot putty that will dry a bit faster but thickness is the killer here. I think it will take four separate operations to finish the filler and lots of waiting. Take care.

Don

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12-30-2016 09:10 PM  10 months agoPost 5
ssmith512

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Indianapolis, IN USA

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Somebody's been busy!!!

Watching glue dry or filler dry, it's all the same! LOL!

Looking the part Don. I admire the work, but dont envy the task

I probably would have caved and paid somebody to 3-D print it all! LOL!

The Bondo brand spot glazing putty I have been using is very fast drying and almost too easy to sand. BUT, it is solvent based (maybe an issue with the foam pieces and melting them) and it stinks. Would probably NOT be a very good idea to use indoors in an enclosed space.

Steve

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01-04-2017 05:59 PM  10 months agoPost 6
Keygrigger

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Mississauga, Ont.​Canada

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Naturally, I had the new putty in hand and was very quick to use it before reading the caution. I was lucky, the foam board did not melt away from the solvents in the putty. It took a couple of goes to get the filling the way I wanted but I figured out that my finger is a much better applicator than the one I made up to make the fillet at the bottom of the vertical face. Primer was the next thing to try and I found a high build primer in a rattle can (no compressor in this place, sigh) that sands very well. I think one more sanding and a final coat should do it. Take care.

Don

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01-04-2017 08:34 PM  10 months agoPost 7
coptercptn

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Mesa AZ. USA

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So, Don, is this a plug you are making to boils a mold from?

Home of the "Sea Cobra".....

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01-04-2017 09:36 PM  10 months agoPost 8
Keygrigger

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Mississauga, Ont.​Canada

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Yes Jim. I am at the stage where it is pretty much done but I have no idea how to prepare the plug at this point. I am not actually making the mold so I hope I am doing it right. Maybe I need to make a call, lol.

Don

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01-04-2017 10:52 PM  10 months agoPost 9
coptercptn

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Mesa AZ. USA

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Well, first thing you will have to do is prime and sand ( to perfection).. then paint with a high gloss finish. Then Wax, PVA and prep for mold material ( whatever you are using..?)
That will finish the plug part. Then just make the mold ..usually fiberglass resin of some kind (choices here)with layers of cloth for strength and stability.

Home of the "Sea Cobra".....

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01-05-2017 12:04 AM  10 months agoPost 10
Keygrigger

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Mississauga, Ont.​Canada

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Ah, that was the tip I needed. Darrell will be making the mold so I will ask him if prepping it for final paint is what works for him. I don't have a spray booth (open the balcony door and whip outside for a few seconds) so putting an automotive high gloss finish on it at this time of the year is just not going to happen with the freezing temps we're getting. Thanks and I'll see you soon.

Don

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