TIG welding thin brass sheet

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I'm working on a brass sculpture using 24 ga. yellow brass sheet. I've tried multiple settings from pulse to non-pulse on my AHP 201xd TIG machine with settings as low as 20 amps up to 60 at 50% pulse, etc. The low amperage won't fuse it while the 60 amp blows holes. I've tried multiple settings on about 5 amp differences and pulse settings from 2/sec to 10/sec. I'm using an aluminum block as a heat sink but have not found any setting that seems to work. I have succeeded in flame torch soldering but for several reasons would like to use TIG instead. Does anyone have any ideas/suggestions as to best settings for welding/brazing or other process to TIG in lieu of solder?
Reply:ALB-A2 Aluminum bronze filler is needed. What filler are you using to braze the yellow brass ? If your trying to melt the base without filler that will be a problem.Last edited by danielplace; 5 Hours Ago at 03:04 PM.
Reply:I've been attempting to use silicone bronze for brazing but the brass sheet melts before the filler rod does at 50 amps. At lower amperage the sheet is OK but nothing melts. I was able to stick two pieces of sheet together using an acid based flux and acid core solder but the color difference is distracting. I think I'm just off on settings but thought rather than going through dozens of options, I'd inquire here.
Reply:

Originally Posted by bellaterra

I've been attempting to use silicone bronze for brazing but the brass sheet melts before the filler rod does at 50 amps. At lower amperage the sheet is OK but nothing melts. I was able to stick two pieces of sheet together using an acid based flux and acid core solder but the color difference is distracting. I think I'm just off on settings but thought rather than going through dozens of options, I'd inquire here.