VX 20 Fully Dressed

VX 20 Fully Dressed

Here is the VX 20 all dressed out in new production colors! I am really happy with how it came out and I hope you are too. I always love seeing the rough machined parts make the transition to finished parts. The aircraft aluminum housing parts are first vibratory tumbled to ease all the edges and produce a very uniform surface for finishing. We then send the parts out to our local anodizer. Anodizing provides a very durable good looking corrosion resistant finish. We still have a lot of work to do to produce all the internal parts which make the VX 20 operate but we are very close now.

Introducing the X Link

X Link Far

The X Link is my adaptation of the nineteenth century scissors mechanism used with a leg vise to eliminate the need for a pin in the lower guide board. I have used modern materials and have added improvements to make it function better and ease installation. The X Link is shown used with the VX 20 vise mechanism to create a  quick action pinless leg vise. Here is a link to a YouTube video of the vise in action:

X Link YouTube Video

The X Link mechanism is designed to provide exact parallelism between the vise jaw and the vise leg. In practice however the vise jaw should be angled slightly so the top of the jaw contacts the workpiece first and clamping pressure deflects the mechanism slightly and makes the jaw parallel to the leg. Ideally this deflection should be kept to a minimum for best operation. In the video the jaw is spaced out at the lower jaw link end by only 0.040″ which is about 3/64″. This is accomplished by adding a shim to the mechanism. This small amount of deflection is easily accommodated by the VX 20 mechanism and full clamping pressure is applied in a half turn of the handle.

X Link Close

The X Link mechanism is housed in a mortise which is only 16″ long and 1″ wide. The jaw is 2-1/8″ thick and 5-1/2″ wide. In a future post I will disclose more details about the mechanism and some of the unique features which make it operate with minimal deflection and allow simpler installation.

Progress

003

We are hard at work producing the parts to make the VX 20 vise. I thought I would share some of the processes that go into making the vise.The picture above shows some parts  right after machining.  After machining there are a lot of burrs and tool marks in the parts. To get rid of all of the marks and soften all of the corners the parts are put into a vibratory tumbler with little cone shaped dense plastic media. After many hours of tumbling the parts come out with a very uniform finish and all the edges are smooth. After the finishing process the parts are sent out to be anodized and then they are ready for assembly.