The GRACIE S - a Lift Model

[DAWarden-(Jaager)]

There are limitations in terms of the torque forces one could apply to the vise mounted on a tee track, since the tee-track is doesn't have a lot of strength for side loads, particularly if applied to a "lever" created by the height of the vise.

Bob,
I am not advocating this - just as a possible way to make it work.
Have a plywood pad under each of the two C-clamps - size and thickness TBT. Attach the C-clamp to the pad with a flat head screw/bolt that is the same diameter and TPI as the threaded rod that advances the clamping pad. Counter sunk.
Easy hold. A wide enough pad should be as resistant to torque as the C-clamps on a table edge. More than one T-track traveler - it is just a matter of drilling another 1/4" hole.

 

[Roger Pellett]

A simple clamp for carving half models: A piece of 1” thick board clamped vertically into a bench level carpenter’s vise. A couple of wood screws passing through the board into the the flat back of the model.

Roger

 

[Bob Cleek]

A simple clamp for carving half models: A piece of 1” thick board clamped vertically into a bench level carpenter’s vise. A couple of wood screws passing through the board into the the flat back of the model.

Roger

In one of his books, The Commonsense of Yacht Design, perhaps, L. Francis Herreshoff describes and pictures the use of a particularly notched length of stock which is temporarily screwed to a solid wooden hull blank to hold the blank for carving. The shape of this piece permits it to be held in a bench vise in a variety of ways which position the hull at different angles in the bench vise as might be convenient for the carver.
See one thousand word picture below: