Corner dog with big mouth

I picked up an odd variety of Workmate-like portable table a few years back at a Habitat for Humanity Restore,  I hadn’t seen one like it before and can’t find another like it now. It has two clamp threads that go forward and back like most Black and Decker Workmates, but it also has side-to-side clamping as well.  Sometimes it comes in handy holding oddly shaped items.  The front pads do not pivot but the back ones do.

portable three-way clamping table

Fun little clamping table with 3/4″ dog holes.

The dog holes on it use all my standard 3/4″ dogs, but what I found is that just clamping front to back between dogs would start to loosen up enough that the work-piece could could shift left and right. To combat that I enlisted the skill of my son to create the model for and 3D print a set of dogs that had big mouths to hold at the corners.

workbench corner dog with 90 degree mouth

The dog has a 90 degree mouth with a small relief hole at the corner.

dog with grain running the length of the dog

The dog prints on its side so that the grain /lines of the print provide strength along the length of the dog where the shear forces are the strongest.

chamfers on the edges of the dog give it some bite

Each face on the dog has a small chamfer ti give it a little downward bite to keep things from shifting up and out.

all faces of the workbench dog are chamfered

Chamfered in this direction too. The dog has some bite, and is only 1/4″ thick.

corner dogs holding a piece of 3/4" maple

Here the corner dogs hold 3/4″ maple for sanding.

My son did a great job implementing what I described to him. He opensourced the corner dog model here. If you choose to print it, make sure to set it on its side and add supports so that strength of the filament lines run the length of the post.

Add your comment Add your comment

Previously