Articulated arm rest

To help rest you arm when you are doing something a long time or many times.

The Counter Balance part is under the Arm rest.

There is a base part under the counter balance part and on top of the counter balance part. These must be tight for the rest to work

The Threads  of the screws are really right .  Taping the holes after printing will help or running a screw the holes a few times. 

VERSION 2:

I have add 3 files which change a few things:

1. A longer Counter balance to help balance your harm more
2.  A new version of the ARM that makes both holes 8mm and not tapered
3.  Arm Rest that has a spine to support your arm across the ARM and made it to put hardware in. 
4.  I used an 6MM x 30mm Hex head (or use a ¼ bolt x 1 ¼ or 1 ½  Sae) at the TOP PART to the ARM the bolt is loose but when you tighten it even by hand is will make it tight.  
5.  I used a 6mm x 22 Pan head  bolt ( a Flat Head Machine Screw ¼ x  1") for the  ARM REST to  the ARM.
6. I really wanted the project to be all 3ed printed but the pin snaps with to much weight.