Annealing alum gas checks?

[1Shirt]

How do you do it, and does it prevent spring back? Notice some spring back on virtually all alum checks? They shoot well however as is!
1Shirt!

[ReloaderFred]

It has to be done very carefully, as the annealing temperature is very near the melting temperature of aluminum. I've annealed aluminum strips for making gas checks in the flame of a propane torch, but it's not a scientific approach and produces mixed results.

Hope this helps.

Fred

[TCFAN]

Here is a sticky on annealing copper checks.
http://castboolits.gunloads.com/showthread.php?t=20271

I used the info in the sticky to anneal aluminum checks that I made from some flashing that was left over from putting a new roof on my house.. I put the pipe nipple in my lead pot at 700 deg. for one hour and they came out very soft. I don't know if it will work on all aluminum flashing or not but it worked good on the stuff I had that had a lot of spring back..........Terry

[VHoward]

I have used a black sharpie to put several lines on one side of my strips of aluminum, then heated from the other side of the strip with a propane torch until the black sharpie ink dis-appears. Then it is annealed. Go any longer than that and the aluminum will melt.

[1Shirt]

Will try the black ink trick! Thanks
1Shirt!:coffee:

[HARRYMPOPE]

cheap toaster oven

George

[1Shirt]

To what temp George?
1Shirt!