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A Mirror Image

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  • Member since
    August 2008
Posted by tankerbuilder on Wednesday, August 6, 2014 9:44 AM

AHA ! Don;

     Now you have hit on something ! I have seen many model work areas in my life and have pondered this. How can that person even tell whether they are using the right colors or not, with bad lighting ? There are many factors that go into a great build. The most important ,is of course a workplace.

     Do you really want to try the " Mirror Image " thing With a badly lit small , crowded workplace ? Why of course the answer to that would be no  .Good lighting is actually more important than workspace size .

    I had to do ships that were sisters, one time in 1/48 scale. Because of an accident ,I was working on a clip on table, in a wheelchair.( don't fall down stairs carrying models! ). With my trusty OTT lite I was able to actually do the " Mirror Image " Thing !

    Let me explain the " Mirror Image " thing . You take the plans and crease them hard. Lay them on the table against a mirror. Take some tape and fasten everything down ( use drafting tape). Now using a clean piece of drafting vellum, create the other side by copying very carefully what's in the mirror.

     This is a simplification. Everything I've said will become clearer when you've tried this. Oh, Make sure the mirror is exactly vertical !                   T.B.                        P.S. Don, I've corrected many prints this way.

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  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Wednesday, August 6, 2014 8:36 AM

Hence the importance of good lighting at your modeling bench.  Brighter lighting causes the iris to stop down to higher f/#, so you don't need the paper with hole.  A positionable light is good because you can move the light closer to the area of the model you are trying to look at.  Keep your shop as brightly lit as possible.

Don Stauffer in Minnesota

  • Member since
    February 2014
  • From: N. MS
Posted by CN Spots on Tuesday, August 5, 2014 1:24 PM

You can see your nose 100% of the time.  Your brain just chooses to ignore it.  Much the same way I choose to ignore the gaps in the nacelles on my 110D.

Another neat trick...  can't read something without your glasses?  poke a tiny hole in a piece of paper and look through it with one eye.  What little you can see through that hole is in focus.  

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Tuesday, August 5, 2014 8:57 AM

Indeed what you actually "see" after the brain gets through analyzing what comes from the eye may or may not look like what a camera would see.  The brain does a tremendous amount of signal or image processing.  It even fills in the blind spots (each eye has a little blind area where the optic nerve enters the retina).  The eye is seeing nothing in that area.  Even with one eye closed the brain fills in that blank area by duplicating info from the surrounding areas so you do not see a black hole in that part of the image.

Don Stauffer in Minnesota

  • Member since
    August 2008
Posted by tankerbuilder on Monday, August 4, 2014 11:15 AM

Thank You Don !

That's part of the problem ,but not all of it  .Did you know ,for instance,that when you look at something and you focus on something dead ahead ,for instance one eye compensates for the other .I didn't believe it till my eye doctor proved it .

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Monday, August 4, 2014 8:32 AM

I think a photograph works.  Cameras are made such that they remove any handedness.  So I believe making drawings from a photograph should, if one is careful, eliminate any eye related problems, compared to modeling while looking at the prototype.  Now, rather than handedness, I think the problem you are referring to is perspective. Our eyes see perspective, rather than isometric.  And indeed, if you are not careful, this problem can occur with a photo also.

I try to eliminate this as much as possible by using a long telephoto (and long subject distance) when taking photos I will make drawings from.  And, use published dimensions (length, width and height) to scale the drawings rather than trying to scale the drawing from things in the photo. I think these techniques can produce a pretty good drawing if good scale drawings are not already available from references.

Don Stauffer in Minnesota

  • Member since
    August 2008
Posted by tankerbuilder on Monday, August 4, 2014 7:40 AM

Well, Fiddlestix. Back where I started---Sorry

  • Member since
    August 2008
A Mirror Image
Posted by tankerbuilder on Monday, August 4, 2014 7:34 AM

         Here's one for you; What is the most absolutely perfect, model ever built? There isn't one ! Why do I say that ? well , take a ruler and measure your own features. While looking in a mirror. Neither side is the same. Now, apply that knowledge to a model! Although they really try, model manufacturers don't really get it right. Well, more so in the old days.

         Why? Have you ever really tried to make both sides of a plane , car , armor piece or a ship absolutely perfect? You can't, Why? again it's about left and right handedness. You see more with the eye on the primary side. You do work, finer work, with your primary hand. I tried an experiment one time. I sanded and shaped a piece of plastic for a scratch built 5"-38 caliber ship's gun. It looked great till I matched it to the other one .( they were the trunnion arcs for the elevation mechanism ).

            One was off by an amount that could be seen only by a very strong magnifier. Turns out the left one was slightly smaller in the toothed area than the right one .Just a simple maybe eighth of a tooth. Of course it caused it to bind! Now this proves a theory that I have come up with .If we want 100% accuracy from one side to the other we have to build a mirror image! Anyone want to try? Not me

    .I have done this for too long and I figure if I do, say an R.C. Ship and it goes straight without rudder input necessary, then without trimming the prop speeds and blade angles I've done it right. Right? Right ! T.B.

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