February 11, 2014

Finding a Photo’s Location

Photos Have Embedded Geographical Information

Today many photo taking devices have GPS and other location determining technologies built in. As a result photos from these devices typically have the geographic location the image was taken embeded into them.

While some image viewing tools will allow you to see the geographic meta data many more programs do not. To overcome this on an Apple computer in OSX we can use a command called mdls. MDLS allows you to view a document’s meta data. In our case we are going to look at a jpeg image.

How To Find A Photos Location

  1. Find the path to the image you would like to see the geo information of.
    • Example: /Users/MyUserName/Desktop/MyImageName.jpg.
    • Using OSX’s Finder application is a good way to find the file’s path
  2. In OSX, open the application Terminal.
  3. In the Terminal window type: mdls /path/to/you/image/MyImageName.jpg and hit Enter.
    • Example: mdls /Users/Nate/Desktop/FunnyPicture.jpg
  4. In the listed of meta data that appears you should see fields for Longitude and Latittude. In my example file the fields are called kMDItemLatitude and kMDItemLongitude.
    MDLS Command
  5. Ta da! You now know where this image was taken

Seeing Image Location On A Map

If you would like to see the location of the image on a map, head over to https://support.google.com/maps/answer/18539?hl=en to format the longitude and latitude coordinates for searching on maps.google.com


February 6, 2014

Polishing Knobs For Unisaw

My process for polishing the locking knobs for my Rockwell Unisaw restoration.

Tonight I started polished one of the Unisaw’s three locking knobs. I used a 6″ 1/2 hp buffer equipped with a Spiral sewn buffing wheel and a Loose Cotton buffing wheel.

The buffing process is simple. Use a Brown polishing compound on the Spiral Sewn buffing wheel to get the initial clean buffed look. Then follow up with the softer Loose Cotton buffing wheel with the smoother Dark Gray polishing compound. I spent about 10 minutes polishing this knob between the two wheels and compounds.

I a very please with the results.

Before Polishing

Unisaw Dust Door Knob

After Polishing

Unisaw Dust Door Knob Polished


February 5, 2014

Priming and Painting the Rockwell Unisaw

When deciding on what I wanted the finish of my Unisaw to be it was evident that a perfectly smooth factor like finish was not going to be worth the effort. Multiple layers of paint would be needed along with sanding using 300-600 grit sand paper to smooth out imperfections that had been incurred in this saw 37 years of life.

To avoid the frustration that my perfectionism would bring to trying to achieve such a finish I decided to go for a textured look. I wanted what some people call an orange peel look or eggshell. While there are paints like Rustoleum’s “Hammered” product that claim to deliver such a look, I was displeased with their results.

After testing many products and application methods, I landed on using a technique I read about on OWWM.org where you under-power an HVLP sprayer to create texture. The overall paint process to create the texture and have a finished surface was simple. First spray your “texture” layer of primer. Followed by a layer of primer applied evenly over the entire surface (no this does not neutralize your texture). Then apply your final layer(s) of paint for color.

Closeup of textured paint results.

Unisaw Textured Paint Closeup

Creating a textured surface with Rustoleum primer

Creating the textured primer layer is simple but time consuming. Choose a thick primer product, I chose Rustoleum’s primer which I believe is an enamel. Then, without thinning the primer, spray the primer through an HVLP gun at a low enough pressure to create splatter. To achieve the specific texture I wanted I ran my HVLP gun at 22 PSI. Locking in the texture you desire will will take a bit of tweaking and playing around with your spray gun, but once it is setup it is incredible easy to get a consistent texture. The one downside, and this may be gun specific, is that this application method is VERY slow due to the low pressure of the gun.

Rockwell Unisaw Restoration Progress

Unisaw exterior primed using texturing technique.
Unisaw Outside Primed
Unisaw interior painted white for increased visibility inside the cabinet once assembled.
Unisaw Inside Painted
Unisaw base painted.
Unisaw Base Painted