Run on/run off plate for MIG Aluminum?

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Hello, I've been hobby welding steel with mig for 5 years or so.  I plan on trying out the 3035 spoolgun I have with my millermatic 210.  Do you use pieces of scrap aluminum for your runoff/runon plates?  Or do you use some other metal with a high melting point that aluminum does not stick to so that you can reuse the place over and over?  Or do you just break/cut off the plate and grind down the edge after every weld?
Reply:I use scrap aluminum for start/stop tabs, then cut/grind off after.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Originally Posted by DesertRider33I use scrap aluminum for start/stop tabs, then cut/grind off after.