Post us some pictures please

 

I think more info would be useful.

 

I tried to look up the lase one welder and it looked like it was cold welds laying on the surface of the material. I don't know anything about them, how hot they will weld, what material they will weld or the thickness of material. Give us some pictures of what you're doing. From what I saw on the video of the lase one, it looks like a souped up sewing machine.

 

It looked up the process & it seems like there's some magic involved.

 

The info I found on cold welding talked about intense pressures and the materials “jumping” to one another to form the bond, seemed to be geared to dissimilar metals like copper & aluminum.

 

I am new to molds that are made out of plastic that you can inject into. I have heard of plastic injection molds though that are made out of different aluminums and steels. I'm interested in seeing some of this mold welding as you put it. Only reason I would think of for needing to weld on a mold would be for larger molds that have been damaged from clamping down on a solidified sprue of a glass filled plastics like GE/Lexan or a metal insert that happen to get stuck in the mold. Or perhaps where the off gas vent is located next to a parting line and the parts are flashing.

@toolmanphil , Phil What are the reasons for welding on plastic injection molds in your scenario/environment ?

 

Welcome to the wonderful world of welding please share some pictures of your project