How to Make a Snorricam

Step 4 Building the Lower Arm and Elbow

To build the lower arm, start with a 1"x3" that is 17 1/4" long. Mark 1 1/4" inches down both ends, and make a semicircle radius 1 1/4" at one end of the piece (Picture 2). At the center of that semicircle, drill the same size hole as the center of the shoulder piece you made in the previous step. 3 inches further down the board (at 4 1/4"), mark a center point on the board. Drill a hole the size of the holes in the shoulder piece. Now cut the semicircle out of the end of the board (Picture 3). If you skipped drilling the holes in the last step, now is the time to put a bolt through the center hole and use the lower arm as a guide for drilling the holes in the shoulder. Drill another hole (the same size as the center of the shoulder) centered on the 1 1/4" line at the other end of the arm.

To build the elbow, start with a piece of 1/2" plywood that's 8" by 5 1/2". Draw a line 1 1/4" from the 8" side, and make 2 semicircles coming out from the center of that line. The radii should be 4" and 3" (Picture 4). Make marks every 22.5 degrees (Just like the shoulder piece) (Picture 5). If you want to use the upper arm as a guide for drilling the holes, Drill the center hole and skip to the next step now. If not, go ahead and drill the holes on the intersection of the lines and the 3" radius (Picture 6). Cut along the 4" semicircle line and line up the hole in the center with the hole at the end of the lower arm (Picture 7). Use a bolt to keep the center hole aligned and use screws to attach the 2 pieces. make sure your screws are flush with the semicircular piece.

Comments

[RebelApo]

Hi. Is there annny way you can list all the measurements you have in the google sketch up documents, here? I've been trying forever to figure out what it says, because I keep getting confused by your directions. I'm an excellent copier however, and just really need to know these measurement before I pull all my hair out, lol.

[Cartermarquis]

I've added a .zip folder containing the original images, which you can see the measurements in.  Post pictures when you finish!

[RebelApo]

Ah! Thank you so much. I had to do some guesstimate work on the plates as well. Will definitely post pictures when done.

[Cartermarquis]

I've added a .zip folder to each step containing those step's images, if you wanted to look at those too.