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Corvette
C4 Forum
1988 Convertible for sunny day drives
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<blockquote data-quote="Tourmax" data-source="post: 176570" data-attributes="member: 5304"><p>Alright. I'm going to admit defeat here.</p><p></p><p>After trying multiple settings for WS, V and travel speed as well as cleaning, preheating, etc, it seems I can get the welder to transition back and forth between globular and spray transfer. When it goes into spray, it gets lots of penetration to the point it will blow right through 1/4" thickness if I'm not careful.</p><p></p><p>When it goes globular (or sometimes sounds like a short circuit arc kicking in and out) it just lays ropey turds/balls on the surface.</p><p></p><p>Not to mention, I can't seem to end an arc without wasting a tip or having a big blob of molten Al bond to the tip or the shield. It's either get it in spray/glob and roast a tip, or no penetration at all.</p><p></p><p>So, I admit defeat. I'm going to bolt it into the Jig and use the MIG to tack the other pieces in place and drop it off somewhere to have it properly TIG-d.</p><p></p><p>It will do Aluminum, but it only seems to work for me on billet or bar stock for me. I;m guessing the cast (and the heat sink mass) is just too much for my Lincoln 180.</p><p></p><p>This piece of cast is just above the ability of both the welder and the weldor....<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p></blockquote><p></p>
[QUOTE="Tourmax, post: 176570, member: 5304"] Alright. I'm going to admit defeat here. After trying multiple settings for WS, V and travel speed as well as cleaning, preheating, etc, it seems I can get the welder to transition back and forth between globular and spray transfer. When it goes into spray, it gets lots of penetration to the point it will blow right through 1/4" thickness if I'm not careful. When it goes globular (or sometimes sounds like a short circuit arc kicking in and out) it just lays ropey turds/balls on the surface. Not to mention, I can't seem to end an arc without wasting a tip or having a big blob of molten Al bond to the tip or the shield. It's either get it in spray/glob and roast a tip, or no penetration at all. So, I admit defeat. I'm going to bolt it into the Jig and use the MIG to tack the other pieces in place and drop it off somewhere to have it properly TIG-d. It will do Aluminum, but it only seems to work for me on billet or bar stock for me. I;m guessing the cast (and the heat sink mass) is just too much for my Lincoln 180. This piece of cast is just above the ability of both the welder and the weldor....:( [/QUOTE]
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Corvette
C4 Forum
1988 Convertible for sunny day drives
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