Cbrick's homemade Forster power trimmer

[browntown]

Found this in an old thread, hope he sees this. I was working to make a similar rig and was hoping for more details. Looks like the forster base slides in the tracks. I assume the shaft in the bearing is threaded for the cutter shaft. Also curious on the gear reduction, and how slow he made it. Besides cbrick, anyone else make a rig like this?

http://uploads.tapatalk-cdn.com/20160518/d3d4168308594f5440567e58bf602b6b.jpg

Sent from my SM-G925V using Tapatalk

[Artful]

I use one of these - just remove your handle put it on and use the hex driver in cordless screwdriver/drill
http://www.midsouthshooterssupply.com/item/00070PA1000-100/Case-Trimmer-Power-Adapter-
http://www.midwayusa.com/product/644779/forster-case-trimmer-power-adapter
You can also just put on a 5/16x24 nut in place of the handle and use anything that takes a socket.
Lower RPM is the key

Here someone doing more what you and Cbrick did to automate

https://www.youtube.com/watch?v=p32H8EUgbMs

for shouldered cases more seem to be moving to tools that index off the shoulder
https://www.possumhollowproducts.com/KWICK_CASE_TRIMMERS.html
https://www.youtube.com/watch?v=i42nDelSKf8

https://littlecrowgunworks.com/product/worlds-finest-trimmer-wft/?v=7516fd43adaa
https://www.youtube.com/watch?v=UWyWz-tzJ10

[EDG]

Brown I have ran my Forster with a battery powered drill a lot. Your speed can vary depending on the diameter of the case. Faster for a .22 and slow for a .45-70

Just guessing at the RPM run it between 100 and 250 RPM depending on having a chip guard to catch the shavings. If you go fast with no guard you need to vary the feed a bit to break the shavings so they don't fly off into everything. The brass cuts well at almost any speed but management of the shavings is the main reason to play with the RPMs and feed rate.

A real heavy feed rate produces heavy shavings that tend to stay in one piece but they are a problem when you trim off .300 per case. The heavy shavings flop around and eventually break.

[jmorris]

Not near as neat to look at but I converted mine with an old power window motor.

http://i121.photobucket.com/albums/o213/jmorrismetal/reloading/DSC02033.jpg

I am guessing the frame of the forester slides back an forth on the stand, with the one in the first photo? Upon 2nd look, looks like he cut it down so it slides in a machined track and added the knob to the rear of the frame to slide it back an forth.

[Clark]

I have done it in the mill, hand crank door knob, with a battery powered electric drill,.... and somewhere a drill press.

[Clark]

168522

Ok, I found the drill press pic. I had to mount everything on foam rubber and tied down with ropes to keep it from shaking.... er make it self aligning, yeah that's it.

[jmorris]

I have done it in the mill,

I did that too once.


https://www.youtube.com/watch?v=LaBON6F1LlQ

[blikseme300]

I did that too once.


https://www.youtube.com/watch?v=LaBON6F1LlQ

Why? Because you can!

[No Blue]

Saw a youtube with Forster mounted on a wood rack and a cordless drill was slid back and forth on the rails of the rack; he even had a part that would hit the drill trigger and turn it on. He would just grab the drill body and pull it toward the tool, didn't have to contort to get his finger on the trigger. Probably took him an hour to make the whole thing.

[Clark]

Jmorris posts are awesome.
How can I take this to the next level?
Don't trim brass.
10 years ago I bought a new car and never washed it. Now i have a new truck. I will give the old one away without ever washing it.
It can be done.

Just use a Lee Collet neck die, or barely push the shoulder back and it will not grow much.
Then throw it away and use new brass.

[quack1]

Making Makarov cases from 9mm luger prompted me to cobble up this one from junk I had laying around. Not pretty, but it works. The reduction gears are from a cordless drill that died.

http://i291.photobucket.com/albums/ll300/1quack1/IMG_0040-1.jpg

[6bg6ga]

168566

This is what I use. Its fast and accurate. I used an old furnace motor and a Jacobs chuck. This one is for 223/5.56's