by Jorlcrin » 28 Mar 2024, 11:10 am
My latest foray in the DIY Reloading Tools..
I've eyed off the powered Case-Prep stations for some years; get a bit tired of using an assortment of Cordless drivers to do the same job.
I have nearly all my case-prep tools fitted to Hex drives(BRT sell them - great pieces of kit).
But I'd prefer a station where I'm only needing to hold the case in position, rather than the case and the tool at the same time.
The past 5 years, I've been messing around with a 3D printer, and last year, came up with an adapter design to make use of a number of "Pololu - 37D" 12vDC Gearmotors I have on hand here.
Not long before I finished the design, the damned 3D printer took a dive, and it's taken many months for me to man up and fix the damn thing.
Anyway; now that I have the printer resolved(Surprisingly, with NO axe-holes through the front panel!), I have been working through a back-log of projects that I wanted to print to test them in the real world.
In the list, was this adapter(Green part in the pic).
Printed in ASA(evolution of ABS), this plastic should be plenty strong enough for the job.
All my adapter does, is to adapt from a 6mm 'D' shaft hub, to a 1/4" hex socket.
But I couldnt find anyone selling something similar; adapt from a 6mm shaft to (preferably) a 1/4" QD hex socket.
So it became simpler to design my own..
The Robot/Electronics sites have the hubs to fit the 6mm D-shafts of these motors, as well as the gearmotors themselves.
This one is a 100:1 reduction on the gearbox, which gives me a 100rpm No-Load speed.
There is a 131:1 and a 150:1 version available of the same gearmotor; giving around 67-75rpm.
There are six 3x25mm bolts that hold the green adapter onto the hub.
The hub has two grub screws to lock the hub onto the shaft.
There is also a 3x25mm crossbolt going through to hold the QD hex socket into the green adapter.
I used a Milwaukee QD hex socket, but any of them should fit.
I plan to mount this up in a box, and have the shaft coming out the top.
Next on the design, will be a motor mount that allows for a height-adjustable vertical mount.
[The blue factory metal one is a bit limiting in placement.]
Being a QD hex drive changing out the various bits is quick, though I am tempted to make up a dual one.
I've included a heap of the other bits and pieces to show it off a bit.
I have a good mate who's just delving into the deep, dark world of reloading, and I thought I might make him up one of these to help him out.
I've previously printed things like individual caps for the RCBS powder dispenser(one for each powder type I use), as well as wall-brackets for hanging the RCBS priming tools.
There are a few other DIY tools in the pipeline, but this is the latest..
- Attachments
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- Power Drive Adapter for Polulu 12vDC Gearmotor
- 20240328_101621 (2)_Downsized.jpg (446.22 KiB) Viewed 3652 times