I have welded a patch panel on my cab and after I sprayed on the epoxy primer I noticed a number of small pin holes along the welds. As this is my first welding project I am asking if this is going to be a big problem later on. It looks like body filler will fill it all in and also smooth out my welds. I just don't want to see these holes come through the paint a few years later. Has any one had experience with this.
This sounds like the small pin holes that sometimes appear in the center of the weld dots......
This is really helpful. I wondered about the power setting, but since I am having trouble burning through, more heat seemed to be going in the wrong direction. I definately will try the copper heat sink, and I have been clipping the ends. It sounds like I am on the right track and just need more time welding to improve. I will send better pictures this weekend as I am out of town this week.
Thanks for all the help.
Brimmer
....where this sounds like you aren't getting good overlap from one dot to the next, leaving a gap between. These are two different symptoms, which problem is it you are experiencing?
BTW, I normally base my welder heat settings on the weld penetrating fully, and not whether something is burning holes. If your wire feed is too slow for the higher heat setting, you will burn holes all day. If you are not getting full penetration on the welds your heat is not high enough. Once I get the heat set for a good weld penetration, then the wire feed is adjusted to correct any burn thorughs or blow-outs. I.E.: if the heat is correct for full penetration welds but tends to burn holes, then increase the wire feed. If there isn't enough filler (wire feed) going into a weld, it certainly is going to burn the surrounding metal. Hope this helps....
