Grounding Issue - Dragon Wagon

[DDFabMarcus]

I am having a grounding issue on my 36"x24" Dragon Wagon. I will get an arc every so often that takes a small chunk out of the cast iron. Curious about any potential solutions other than grounding directly to the part.

[Fireball_Wyatt]

This is coming from an arc jumping between the ground clamp and table or your table and your work creating an arc gouge. Best practice I have found to avoid this is to ground to your work using a clamp or a magnet or attach a table clamp to your work and ground to the post on the clamp.

[Fireball_Jason]

This topic has been covered in this post.

Avoid grounding your welder to your fixture table. This will happen

One common mistake I see with new fixture table owners is they ground the welder to the table. This can cause damage to the machined flat surface from arcing. The arcing comes from a air gap in between the table and the part. This damage can be on the top or at the grounding clamp. It doesn’t matter what material the table is made from. Hard steel, Cast iron, regular A36 plate, the arc will eat away the material or raise a high spot that is really hard. [IMG_3603] [IMG_3606] [IMG_3607] [IM…

[DDFabMarcus]

Thanks Jason. Repair was going to be my next question.

[LopezBart]

As long as the mark is a recess in the table, best to ignore it. If there’s a raised portion, use a small stone to remove it as you would a ding.