I have recently moved on from a Dillon SBD to a Hornadt LNL. The one thing I miss from the Dillon is the low primer alarm.
So i thought, how hard can it be ?...went to "the Source" and purchased a low-volt buzzer, http://www.thesource.ca/estore/product.aspx?product=2730060&language=en-CA
And a battery holder with a switch: http://www.thesource.ca/estore/product.aspx?product=2700409&language=en-CA
I then went through my box of salvaged switches, and found a micro switch which came off an old microwave, but are available at any electronics store, Amazon etc.
The switch is attached to the primer feed tube that is mounted on the press, so that the small on/off "bump" is right beside the top of the primer tube. I used small zip ties to mount the switch:
The switch is then wired to the buzzer which I glued to the battery box:
The next step is to mount a small "drill-stop" (Princess Auto, CTC, etc) on the primer follower rod (the white rod for the Hornady LNL). The drill stop has a set screw, and with it you locate the position on the rod which would hit the switch when the follower reaches 5 or so primers left in the tube. I glued a couple of washers to the drill stop so that they would contact the switch:
There you have it, put some AA batteries in the case and turn it on. The washers should activate the buzzer when a low primer condition occurs.
You can see by the pictures that I did a bit of tweaking, ie wire loom, tape etc. The main thing is that it works great.
So i thought, how hard can it be ?...went to "the Source" and purchased a low-volt buzzer, http://www.thesource.ca/estore/product.aspx?product=2730060&language=en-CA
And a battery holder with a switch: http://www.thesource.ca/estore/product.aspx?product=2700409&language=en-CA
I then went through my box of salvaged switches, and found a micro switch which came off an old microwave, but are available at any electronics store, Amazon etc.
The switch is attached to the primer feed tube that is mounted on the press, so that the small on/off "bump" is right beside the top of the primer tube. I used small zip ties to mount the switch:
The switch is then wired to the buzzer which I glued to the battery box:
The next step is to mount a small "drill-stop" (Princess Auto, CTC, etc) on the primer follower rod (the white rod for the Hornady LNL). The drill stop has a set screw, and with it you locate the position on the rod which would hit the switch when the follower reaches 5 or so primers left in the tube. I glued a couple of washers to the drill stop so that they would contact the switch:
There you have it, put some AA batteries in the case and turn it on. The washers should activate the buzzer when a low primer condition occurs.
You can see by the pictures that I did a bit of tweaking, ie wire loom, tape etc. The main thing is that it works great.
