Threading is the process of creating threads on a rod or a bolt so that it can be used in conjunction with a nut or other fastener. One of the most difficult aspects of threading is getting the threads started straight on the rod. A small block can be attached to the threading tool (the die) to hold the rod perpendicular to the tool. Materials:
5" x 4" x 2" hardwood block
Ruler
Drill press
Drill bit the same diameter as the rod
Strip of hardwood about 6" x 2" x 1" (dimensions need not be exact)
Table saw
Countersink drill bit
Screws
Drill or screwdriver
Die
Die stock
- Drill a hole through the center of one long edge of the 5" by 4" by 2" block (figure A). (Measure to locate the exact center of the block.) The hole should be the same diameter as the rod.
- Send the strip of hardwood for several passes through the table saw to make a dado cut (figure B). The dado should be just deep enough to accept the die stock, and it should be about 3/4" from the end of the block. Cut the block on the other side, about 3/4" from the dado cut, so that you have a small block with a dado cut in its middle (figure C).
- Repeat step 2, using the leftover strip of hardwood so that you end up with two identical brackets.
- Use a countersink bit to drill two holes into the tops of each of the two brackets (figure D). The holes should be the sizes of the heads of your screws.
- Center the die stock on the top of the hardwood block opposite the side with the drilled hole. Screw the two brackets to the top of your block of hardwood, securing the die holder through the brackets' dado cuts (figure E).
- To use the jig, feed the rod through the hole in the back of the hardwood block. The jig will hold the die steady to create perfect threads on the rod.
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