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Building Tips and technical articles. => Building techniques => Topic started by: t michael jennings on April 02, 2007, 12:51:08 PM
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What method do you have to hold and spray paint small parts?
Items such as engine cowls, wheel pants, rudders, horizontal elevators and flaps are painted prior to assembly on the aircraft. These parts are difficult to hold and spray paint.
Items such as the engine cowl needs spray painting on both inside and outside. Do you paint both inside and outside at the same time or paint inside and wait until it's dry to paint the outside?
Photos are likely the best answer. They are easier for all to understand.
t michael jennings :-\
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Unfortunately, I'm not at home or I would post a picture, but I build holding jigs. Chunk of balsa with 1/64" plywood sticking up for the hinge slots to slide onto for control surfaces. The cowl I use a chunk of balsa with a hardwood block and blind nut for it to screw onto. I've come up with other things to hold various parts. The main airfram stays on the holder.
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I once painted a "smiley face" :) on my small part! Wife was amused! H^^
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Your Sick, Twisted and Warped !!! All qualitys I admire in a person. LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~
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I can't LL~ LL~ do it LL~ I can't LL~ LL~ LL~ stop laffin LL~ LL~ LL~ You are one warped animal.. I love it.
"The G-Man" S?P VD~ S?P
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What method do you have to hold and spray paint small parts?
Items such as engine cowls, wheel pants, rudders, horizontal elevators and flaps are painted prior to assembly on the aircraft. These parts are difficult to hold and spray paint.
Items such as the engine cowl needs spray painting on both inside and outside. Do you paint both inside and outside at the same time or paint inside and wait until it's dry to paint the outside?
Photos are likely the best answer. They are easier for all to understand.
t michael jennings :-\
I do things a lot like Randy Powell. I have little (no pun intended) jigs I make out of wire and such to hold flaps and elevators.
One thing I make use of is paint mixing sticks. I tape things, like wheel pants, to them to paint.
Bill <><
(now the rest of you guys, CUT IT OUT!! ;D)
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O LL~ LL~ LL~ K
"G-Man"
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Bill,
Of course you do things like me. Why wouldn't you. VD~
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Did I ever tell you about the time I used lacquer thinner to remove a smiley face from my small part? ~^ Pretty impressive until the swelling went down! Again, wife was amused. H^^
PS - Kind of looked like my avitar.
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QUIT IT!!!!!!!!!!!!!
(and I mean it if I ever stop laughing!)
Boy, I hope Sparky don't see this!
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QUIT IT!!!!!!!!!!!!!
(and I mean it if I ever stop laughing!)
Boy, I hope Sparky don't see this!
Don't worry Bill... I'll never do that again H^^
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Did I ever tell you about the time I used lacquer thinner to remove a smiley face from my small part? ~^ Pretty impressive until the swelling went down! Again, wife was amused. H^^
PS - Kind of looked like my avitar.
so that is how you got your name ;D
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Don't worry Bill... I'll never do that again H^^
LL~ LL~ VD~ LL~ LL~
"G-Man" S?P
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Don't worry Bill... I'll never do that again H^^
Or at least not until the next time! LL~ LL~ LL~ LL~ LL~ H^^
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Poor MIchael...asks a serious question and this is what he gets.
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I once read a tip that you could hold small parts for painting by sticking a pin in them. NEVER AGAIN
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What method do you have to hold and spray paint small parts?
Items such as engine cowls, wheel pants, rudders, horizontal elevators and flaps are painted prior to assembly on the aircraft. These parts are difficult to hold and spray paint.
t michael jennings :-\
Michael,
There are a lot of good brains to pick on this forum, and one of the best is Randy Powell's. Randy showed his manner of holding small parts for painted, I tried it, and it works great.
Mine are slightly different from his, but you can modify things to suit your own needs. The base for mine is some 1/2" X 1" stock, with a cross piece glued on so that the holder will stand on its own, and a hook-eye in the end for hanging on the drying rack.
For the control surfaces, cut pieces of 1/32" ply the same width as your hinges, and a couple of inches long, and put two of them in your control surface, and THEN with a large staple gun, staple the plywood to the base. Each holder has to be custom made to fit each different control surface, because no two are ever the same. But you can keep one piece of plywood in place, and move the second one as needed for future projects.
As far as the cowl is concerned, each job is a little different. You should be able to use the mounting brackets, and make a simple custom jig to hold the cowl.
Save all the holders that you make, because they can be modified to work with future builds, and a lot of time time will be saved.
These holders do make life a lot easier when painting. You can prepare each part, mount it on a holder, do the final clean, and then hang them up in preparation for painting. As you paint, you can take each one down, one at a time, do your spraying, and hang them up again to dry.
Great idea.....thanks, Randy !! (See...we are paying attention) :-)
Cheers,
Warren
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Warren,
Thanks for posting a picture. That's it, indeed. Works well. I have a stack of different setups under my workbench. Usually can find something close enough to work for a given parts.
Nice work, by the way.
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Randy;
By the looks of that picture you people are using a thick hinge? What type or manufacturer is it, and where are they availlable. I like the way the hang rigid.
"Billy G" H^^
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Randy;
By the looks of that picture you people are using a thick hinge? What type or manufacturer is it, and where are they availlable. I like the way the hang rigid.
"Billy G" H^^
Billy,
I'm a little confused by your question. What do you mean by "...the way the (sic) hang rigid..."? What you see in the photo is the 1/32" plywood "dummy hinges".
The hinges I use are made by Klett Plastics, #208. Not sure where they are available anymore....they're getting more and more difficult to find, though DuBro makes one that is very similar, with a slightly smaller diameter pin.
The hinges are 5/8" wide, 1" long (total of both halves), and 1/32" thick....very convenient for the 1/32" plywood "dummy hinges".
If it's still not clear, please ask away.
Cheers.
Warren Wagner
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Warren;
Sorry about the confusion------You have answered my question exactly. There are still a couple of HS's in my area that have been around for a while. I will check them out for these hinges. Thank-you.
"Billy G" H^^
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Warren;
Sorry about the confusion------You have answered my question exactly. There are still a couple of HS's in my area that have been around for a while. I will check them out for these hinges. Thank-you.
"Billy G" H^^
Billy,
Don't sweat trying to find the Klett brand hinges....if they are available, great....use them. A quick Google search did not come up with "Klett Plastics", the company that made them, or any distributors that were selling them. Tower doesn't have them.
The DuBro #117 is very similar and readily available. The barrel on the DuBro is a little smaller in diameter, so I preferred the Klett.
The very best glue to install the hinges with (this will generate some debate) is "Pacer Hinge Glue" #PT-55. I've run tests with that glue and several other water-based glues, and the Pacer is head and shoulders above the others for adherence to the plastic used in the hinges. I didn't consider epoxy, because it is difficult to clean up, and the strength is just not necessary. If tested destructively, the Pacer will remove balsa before the joint will come apart. If you have reservations, run a simple test and see for yourself.
Cheers.
Warren Wagner
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Ive found that painting large parts is easier than "rigid" hanging small parts because the large parts dont have to be "rigid" to hang because of the fact that the large parts are bigger than the small ones even when they are not "rigid" but when the large parts are "rigid" you dont have to hang them like you do with the small parts because you can paint the non "rigid" side first and the "rigid" last because at that time of the procedure the wife is able to help out much easier because she does not have to waste time fooling around with the non "rigid large parts and I fall asleep.Any questions?..BOB
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Warren, I both them in bulk a coulpe years ago directly from Klett. Went in with others and bought 1000 (minimum "Bulk order").
I understand, but haven't checked, that Klett HAS stopped production of their hinges........... b1
Bill <><