My Home Built Brass Annealing Machine

[rbertalotto]

I finally got around to stating to build my brass annealing machine. Too much to post here so I wrote a short article on my web site that has pictures and a video of the machine working.

I still need too install the torches but I thought there might be interest to where the project is currently.

www.rvbprecision.com

Thanks!

 

[300 RUM]

very nice

 

[brian427cobra]

I built one too from the jmorris plans, one point in your article you said a rheostat could be used to adjust the dwell time(motor speed) I highly recommend against that, the DC power supply is nice, but a PWM controller will allow the dwell time to be adjusted while still allowing full torque from the motor, I am getting ready to add another PWM to controll another motor to turn the brass while in the heat.

PWM
http://www.suntekstore.com/goods.php?id=14006934&utm_source=gbus&utm_medium=paid

120vac to 12vdc
http://www.frys.com/product/5872563?site=sr:SEARCH:MAIN_RSLT_PG

 

[brian427cobra]

Here is where the case rotating and even case feeder additions
http://www.ar15.com/forums/t_6_42/381094_home_built_case_annealer_op_updated_10_28_12_with_final_pics_and_running_video.html

 

[rbertalotto]

Brian,

Thanks for the link to that PWM. I had no idea you could buy one so reasonably.

I'm going to add your suggestion to the article.

Thanks!

 

[krmcne]

I made an annealing jig as well. I don't have a machine shop, so mine is made out of pine and masonite for the two torch holders. I use some square metal tubing on a stand to hold the brass and rotate it into the two flames. I also use Tempilaq 750 degree to make sure I get the brass to the right temperature. I used to use the Tempilaq on all the brass, but now only use it on just the first five or so. I do a fast count on those first five until the Tempilaq turns dark, then do the same length fast count on all of the other brass. It may need a little different count on each annealing session since the propane flames may be adjusted differently. My system is totally manual, but easily controllable and really moves along pretty fast. I used to get quite a few split case necks, especially .223, but now just see one occasionally.

 

[trpcboy]

I used a stepper motor and a Micro controller. I can set the time under the torch from 0 to10 sec. and anything between (with a LCD readout). I have a AC motor to rotate the brass while in the flame. I need a little more work on it to get just right.
john
Mims, Fl

 

[gotcha]

Very nice work Roy! I'll be watching for your finished product. Input from other members also appreciated. It seems that a motor that doesn't lose voltage with changes in RPM would be ideal. Excuse the pun, but more power to you :