Plastic Bullet Feeder Dies?

Here's my weekly (monthly?) post to tempt you single station guys to add to your hobby!

I've seen attempts to make 3D printed bullet feeding dies.  I didn't think I was interested in Plastic dies......that just sounds temporary and stupid.  But TylerR, over at Cast Boolits, has been trying to convert me.....saying, "at least try one, you'll see there is Zero wear, and they work 100%, totally reliable"....which I couldn't say the same for the Hornady pistol feed dies I've been using........so I printed one.....hmmm.....then I printed 3 more!.....(the Hornady's are now stored away)

Of course I've got pictures!

Above: you see I used spare die rings, bought some springs and two 3.5mm ball bearings in each.....what you see is two printed parts, the barrel with a groove inside, and the insert which has holes that the ball bearing drop part way through.  The case is pushed from the bottom until the bearings rise and recede into the groove....one bullet drops at a time...every time.  There are several sets of holes for different bullet lengths.

Below: On the left are the adapter parts, Spring adapter (threads inside, spring screws in)  And the drop tube from the spring adapter to the die on the right. (this is the medium (of three sizes) of drop tubes)  The drop tube just slides over the beveled top of the die...the spring adapter locks with a quarter turn into the down tube.

Here's a tiny test video using a single stage to test function:

This is the 38 version, or .357Mag.  It doesn't care which one...just screw in die for the case length. This 3d Printing sub-hobby has probably kept me making new brain cells in my old age....Alzheimer's deterrent, I hope.  Cheaper than drugs or doctors.