Epoxy over welds

O

Outlaw

I had asked this question on another post, but lost my way when I went to look for it again. My welds are tight with no visible pin holes, but I assume there may be some I could have missed and also where I could not get a light behind to check. I am spraying three coats of epoxy over the panel that it welded. It will get a heavy coat of former SPI Bedliner (my last half gallon). I am considering waving the step of fiber glass filler over the welds in this area. I have the fiber glass filler and its not a big deal to do it, but I would consider elinimating this step if its just adding more material and could be avoided. Pros, Cons?
 
Any pinholes will be easy to spot once the epoxy is applied. Simply dab them with a small brush or fuzzy end of a paper match until they stop wicking up the epoxy and are filled. If you do this to both sides, corrosion won't happen.
 
I have actually started brush painting my welding seams with a chip brush, then a couple of days later sand with 180/clean then spray two coats. It seems to help with any low areas and eliminate filler. This is the chassis area where I'm using the red epoxy as a topcoat.
 
I really like the way spi epoxy applies over welds. I just cant imagine the welds would require a fiber glass filler applied in addition to hand brushed epoxy. It runs into any voids and levels out very nice.
 
I don't use fiberglass filler over welds. Blasting reveals the pin holes pretty well. Sometimes the metal gets smeared over the pin holes from grinding; blasting exposes them. I also turn out the lights in the room and put a light behind the panel to look for pin holes.
 
You must log in or register to reply here.
Back
Top