As with most of these props, it was used as a medical instrument as well as an engineering tool. However, with this one, the scientific use was seen more often.

Here are some screenshots from “Star Trek: Captain’s Chair“:

And here are two shots from the “It’s A Wrap”-Auction where two of these were sold:

Lastly, here’s the sequence of the lights from the show:

Even if it’s not very clear in the animation above, I know that the last LED of the sequence is green whereas the rest of the lights are of a warm yellow/orange color.

Using these references and with some help from people in the know, I was able to figure out proportions and measurements for this prop. Also, I learned that the tip was taken from a nose hair trimmer and the ribbed middle part was loosely based on a Star Wars lightsaber handle. The back piece was custom made from aluminum.

Here are some schematics I put together:

This drawing will be the basis for my replica. The dimensions should be pretty accurate to the original.

The next step will be to manufacture the ribbed middle section as well as the two back pieces. I will try to accomplish this by turning these parts from wood.

Stay tuned for more progress pics in the coming weeks!

Any questions or suggestions as to how I should proceed with this? Or do you know which nose hair trimmer model was used for the tip of the Neutrino Probe? Leave a comment and let me know!

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Here’s a closer look to the resin parts that come with the kit:

First up: Wash these parts in warm, soapy water to get rid of any mold release agent that might still be sticking to them. You need to get it off completely because it can prevent primer and paint from adhering to the surface properly.

Parts cast in resin are most times rough when they come out of the mold and have to be sanded smooth before processed further. In this case, the pouring of the resin created a ridge in the “walls” of the body shell. This is the area that will later be glued together. Here’s a close-up:

In order to make it possible to glue the parts together, you have to sand those areas smooth. I use a large piece of sandpaper mounted on a board to accomplish this.

The parts that come with the kit have already been pre-sanded, but you’ll still have to do some fine-tuning to fit the parts together perfectly.

Be careful not to sand too much material away – keep in mind that the electronics have to fit inside! Keep measuring the thickness of the two shells aligned to each other with a Caliper to make sure the prop will be equally thick on each corner.

Here’s the result:

Before continuing with the body, let’s pay some attention to the inner workings of the scanner first! Here are the electronics that are included in the kit:

Since the LEDs alone are not wide enough when placed next to each other, use some 1.0 mm styrene to act as spacers between them. This way, the width will be more accurate to the original prop.

This step can be quite tricky! Use some fast setting super glue and rough up the LEDs as well as the styrene with sandpaper or a file. When done, the glue will bond easier to the material.

Update: Since I wrote this tutorial, I’ve improved the set of electronics and am now using a LED bar instead of five seperate LEDs. Thereby the aforementioned (very elaborate) step in construction can be dropped:

Also, I am now using other super-bright red LEDs as the one shown here.

Next you’ll have to cut out all the windows out of the resin parts. Let’s start with the one for the front LEDs. As you can see in Part II, I specifically designed the silicone mold to create a particularly thin layer of resin in this area. That way this step is easily done with a sharp X-Acto knife.

Although the area of thin resin is fairly large, be sure not to create a window that is too big, because you wouldn’t want to have any gaps later. Keep comparing your assembled LED bar with the window to ensure a tight fit. Of course, if you want a bigger window, feel free to do whatever you think looks best. Gaps can be filled with putty later if needed.

Use a small jewelers file to smooth the edges. If necessary, use some spot putty to resculpt any imperfections here. Primer the part to reveal any blemishes and keep working until they are removed. When the electronics are installed, any work on this window will be very difficult, so complete it before the installation!

Next you need to cut out the battery door. The best place for it is in the handle on the backside of the prop. The opening can be conveniently hidden under one of the styrene parts that will be added later.

To determine the dimensions of the opening, simply measure the battery holder which is included with the kit. Then, cut out the matching styrene part using the included templates and place it on the handle.

Hint: Use spray glue to attach the templates to the styrene before cutting. This way the shape will be accurate and the paper can be easily removed in warm water.

Trace the outline of the detail piece and add the measurements of the battery holder like this:

The resin in the handle is approximately 5 mm thick, so you’ll need something more effective than an X-Acto knife this time. You can get good results if you drill four holes in the corners of the layout and then use a fretsaw to cut out the door.

This is the result.

Use a small and flat file to clean the shape of the door.

Now, the openings for both the trigger and the top LED have to be drilled. When doing that, it’s important to align the resin halves perfectly and to be careful not to bring them out of alignment during the drilling process.

For the trigger, simply drill a hole of 4 mm in diameter in the middle of the recessed area on the handle. Test fit the trigger and extend the orifice if necessary before continuing!

To determine the location of the opening for the top LED, use the template of the head piece, which will be added later. You can also use this and other pictures in this tutorial as a reference.

You’ll have to make sure that the electronic components have enough room inside the body to perform their function. To do this, you’ll need to dremel some of the material away.

This is where the battery holder will be put. You’ll have to align it to the door in the other body half, which will be placed on top of this one to enable easy access to the batteries. Again, use the dremel to create some more room if necessary.

This is how the electronics are arranged inside the prop:

To attach all of the components permanently into the resin shell, use a strong putty, for example a 2-component polyester putty which I use in my builds.

As you can see, all of the LED components are placed very near to each another. In case of the green running lights, this is on purpose and not a problem. But as far as the super-bright red LED is concerned, there is a problem with the close proximity to the green LEDs: Light bleeding. To make sure that the red LED doesn’t light up the green ones next to it when activated, you’ll have to putty up the entire area around the green LEDs and use black masking tape around the red LED.

When inserting the LEDs into the window, be sure not to make them flush with the front of the resin body. There needs to be some space for a piece of the included translucent plastic to go in there later.

When the electronics have been successfully installed and tested, the resin body can be permanently sealed. First, use 5 minute epoxy glue to attach the resin body halves to each other. Then, putty up the seam lines and sand them smooth when the putty has dried.

This is the most elaborate part of the buildup. Use primer to reveal any blemishes in the finish and remove them with spot putty and sandpaper until they’re all gone. Be sure to mask all LEDs and the trigger to protect them from sanding, puttying and priming!

Next, the head piece needs to be attached. Before you do that, sand a good portion of the top array off so that it will have the original thickness afterwards when the styrene is in place. Use the templates to cut out the shape and then use 5-minute epoxy to glue it on.

Again, putty the edges and use sandpaper to round them. Try to make it look as if the part was integrated into the overall shape of the prop from the beginning. As before, repeat the puttying, sanding and priming until the result is acceptable.

When everything is done, it’s time to paint!

You don’t want to glue the greeblies onto the paint later, so mask off all areas which will be enhanced with details. Then, paint the entire body with PK 7173 or a matching equivalent.

Don’t forget to drill the holes for the battery door screws!

When the paint has fully dried, mask off everything but the handle and the top scanner array and paint them with PK 7179 or a matching equivalent.

After this is done, remove the masking tape and continue with the last step.

Here all of the detail parts at a glance. For the emitter, shorten the acrylic rod to a length of approximately 12 mm and cut it in half. Sand the flat side of it to achieve a frosted look and a light diffusion effect.

Here are the color codes for the greeblies: Handle details, front ribbed piece and one of the small top details: copper metallic. The other small top detail: red. Rim strips and pointed front detail: PK 7179 or matching equivalent. Square additional detail on pointed front piece: beige. If you want, you can also paint the screws in the same color as the handle details to blend them in.

Again, use 5-minute epoxy or CA glue to attach the greeblies.

Screw the battery door in place after inserting two AAA batteries.

Fit the translucent plastic into the front LED window and insert it.

Cut out the display graphics that you wish to use and test fit them. When your display graphic fits the recess perfectly, use some thin double-sided adhesive tape to glue it inside. You can also use spray glue for this.

That’s it, your ODN Scanner is finished!

Now, go ahead and scan away!

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This excitement of mine led to a passion for engineering tool props. As a matter of fact, this is what brought me into the hobby of prop replicas in the first place! Even as a kid I always wanted to have these little blinking devices, so why not build them myself now?

Since these types of props are not very prominent within the Star Trek universe – Phasers and Tricorders for example are more dominant – it is rather difficult to get any information regarding them. So, there’s only one method to get some reference material: To watch episodes and capture as many screenshots as possible.

Here are some reference pictures I have collected for the ODN Scanner:

Version 1: Early seasons of DS9 – color scheme 1 – medical application.

Version 2: Late seasons of DS9 – color scheme 2 – engineering application.

Version 3: Late seasons of Voyager – color scheme 3 – engineering application.

As seen on the pictures, these kinds of props often don’t have a “fixed” field of application. Because of this, they can be seen in the hands of an engineer as well as in sickbay.

In the Star Trek universe, the explanation for this is simple: All of these devices are composed of modules, so they can operate in different configurations and with a different programming to perform various tasks.

Production-wise of course, the prop department has a certain amount of these “miscellaneous” props in storage and then decides which one suits the requirements of the script best. If necessary, they sometimes repaint it to make it look a little different.

This is also why these types of props usually don’t have an “official” name. Therefore I had to make one up which would correspond to the shown usage scenarios of this prop: The ODN Scanner (ODN = Optical Data Network). I chose to ignore the medical usage here.

Using my reference pictures, I could then draw the following illustration, which also contained the final dimensions. Although some minor details are different from the finished product, the most important features are outlined here:

Careful planning is very helpful in this hobby.

This replica is a so called hero version. This means that it’s not just a painted chunk of resin but a hollow shell with working electronics inside. In this instance, there is a running light with five green LEDs above the display and a super bright red LED on the top side of the scanner. This brings the prop to life, increases the authenticity and is just so much more fun!

The traditional color scheme for Starfleet equipment: PK 7173 & PK 7179

Several greeblies add authenticity to this engineering tool: Styrene, clear plexi.

This prop can be seen in “Deep Space Nine” as well as in “Voyager”…

… and also had a short appearance in the show “Borg Invasion 4D” in Las Vegas.

I also made the display graphics myself…

… and got it printed on high quality photo paper.

This so called hero version contains an electronic circuit, …

… which lights up 5 green running LEDs and one super bright red LED.

The button to activate the lights is located on the handle.

The batteries are installed into the handle, …

…which can be opened to replace them easily!

Here is a flash animation to show the scanner in action:

The glowing LEDs are not simulated but actually photographed! The speed of the running light matches almost exactly the real thing.

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