A product called Thermo-Loc (polymer plastic material) can be a valuable addition to your workroom supplies.
You can purchase Thermo-Loc in 1/2-pound packages (24 @ 1/4” X 6” rods) for about $32.00.
Thermo-Loc rods are solid at room temperature, become pliable when hot, allowing them to be molded into different shapes and sizes.
The plastic can be reformed and reused repeatedly.
Thermo-Loc can be heated in boiling water, a microwave (when containing no metals), and a heat gun or wand.
If the heated plastic becomes glossy after heating, don’t pick it up with your hands as it will be too hot.
Heated Thermo-Loc, has the consistency of Plasticine.
Large blocks, that have been previously used, can be reused by placing in hot water.
Wait for it to become soft, remove from water and evaporate the surface water with a mildly hot air flow from a heat gun.
After the water is gone from the surface and the plastic is the right consistency, you can remold the block.
You can use Thermo-Loc to mount electronics, encase sensors, LEDs etc.
Reheat old molded items to remove internal objects with no residue left on them.
Placing a: nut, threaded standoff or brass insert into a molded piece of Thermo-Loc, gives a secure way of attaching it to a chassis.
Example: encase bicycle spoke nut into a Thermo-Loc mass, the nut should slightly protrude, let cool.
Screw a sharpened spoke into the nut, gives a nice way to hold a scribing tool.
Complex object shapes can be surround by Thermo-Loc, placed into a vise, and cooled.
This allows you to securely clamp that object when you work on it.
Reheat the encased object to remove the Thermo-Loc.
Thermo-Loc can be easily molded into handles for files.
Place “hot” Thermo-Loc into a 10ml syringe (without a sharp).
Immediately compress the plunger to create long small diameter filaments into cold water.
The syringe will probably need to be discarded after one use.
You can now have your own DIY manual 3D printer 
