Aluminum Plastic Pen Mold

I made an aluminum plastic pen mold, inspired by the aluminum pen made in Engineering 2. I was also informed that the plastic pens made from my mold could be used by students learning lathes in Engineering 1 or 2.

You will need a Lathe

.75 aluminum stock measuring 5.2 inches

more .75 aluminum stock measuring 1.4 inches

.5 inch aluminum stock measuring 5.4 in

Modeling this pen helped me with the dimensions I needed for the pen to work.

Drill the .75 inch aluminum stock .5 inches all the way through.

Put your .75-inch aluminum stock on the lathe into the chuck, then .5 drill into the tailstock chuck, and drill through. Ensure that everything is thoroughly tightened

1/2 tap the smaller .75 inch stock by around .45 inches deep, it doesn't have to be precise.

Thread the .5 stock measuring 5.4 inches using a 1/2 die. Make sure to turn the diameter down to .49 before threading with your 1/2 die. Putting Locktight on the connection is preferred; it is okay if you don't have it.

Turn down the .5 inch stock to .234 up until .81 inches from the top, which you will turn down to .109.

SIDE NOTE: You want a little extra stock at the end of where you are cutting so your tailstock can keep it straight.

Make a tight press fit between the pipe and the stock you just turned down. The press fit has to have a diameter of more than .5 inches unless you want to drill into your screw-on connection. I did mine on .57 inches which works pretty well.