Printed from PLA plastic, the jaws are strong enough to hold your work but soft enough not to mar it. This design uses two stagnated nuts in the sliding jaw to disperse the load and maximize the clamping force. And the best part is that it can be reconfigured in 3 different ways. *1. Without the table clamping section you can use it for free hand work, such as holding soldering boards. *2. Clamped to a table. (This allows clearance to slide the 'handle crank' part over the normal handle for maximum grip!) *3. Bolted to a work surface, such as the bed of a mill or drill press. (You may turn the 6" bolt around so that the handle end is on the other side. *Note: Vice clamp-able area is 3" x 3", it can mount to tables up to 1.8" thick. Recommended print settings: *Print all structural parts with 4 perimeters and 50% infill.  (The handles can be 25% infill) Required Vitamins: Available at any hardware store. (Links provided for your reference.) *(qty 1) 6" 1/4-20 hex bolt, fully threaded: http://www.mcmaster.com/#93190... *(qty 3) 3" 1/4-20 hex bolt: http://www.mcmaster.com/#91309... *(qty 6) 1/4-20 hex nuts: http://www.mcmaster.com/#90473... *(qty 1) 1/4-20 nylock nut: http://www.mcmaster.com/#90630... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Note 2: As you can see, the photos shown don't quite match the files. After I tested the initial prototype I added a couple extra features as shown in the model rendering photo.  I made the first one for work and I am currently printing a second one for home! So more photos coming soon!