canada goose Posted January 24, 2013 Share Posted January 24, 2013 The other day I had to attach 1/4 rod to a 1/4 plate at 90 deg. The cleaner the job the better so I tried what I thought would be a Brilliant (for me) solution. I drilled a 1/4 hole and passed the rod partly through the plate . I hoped to then mig weld in the hole and be able to grind the plate flat . But there was no way I could get it to work the hole would fill up but the rod was not getting welded at all. Is this a viable technique ? How do I do it? Quote Link to comment Share on other sites More sharing options...
cavala Posted January 24, 2013 Share Posted January 24, 2013 If I'm understanding what you're doing it sounds like a plug weld of sorts. You should chamfer the whole, use a countersink or a much larger drill bit and then fill it up. . Quote Link to comment Share on other sites More sharing options...
Hillbillysmith Posted January 24, 2013 Share Posted January 24, 2013 It can be done but if you're much of a beginner, then a 1/4" diameter will be difficult... Settings on your mig machine make the world of difference! I agree with Cavala, countersink the back side (welded side) of the plate. You can even put a minor chamfer on the end if the rod (same side) so it will give you a "V" groove in a circular shape and but the rod flush with the bottom side not recessed. Weld in the little circular groove FAST until it's full then grind. Remember, machine settings are key. -Hillbilly Quote Link to comment Share on other sites More sharing options...
hans138 Posted March 20, 2013 Share Posted March 20, 2013 do you have access to a arc welder? that has always worked for my plug welds. also is your mig welder a 110, 220? Quote Link to comment Share on other sites More sharing options...
canada goose Posted April 13, 2013 Author Share Posted April 13, 2013 just like to say your suggestions were very helpfull . Ive been attaching 3/16 section staples to escutcheon plates ( making door bolts) . I countersink the hole on the back side ,insert the staple in the hole till flush with back,then weld and grind off flush. Similar effect to riveting but is easier in terms of getting things backed up and keeping it lined up.cheers! Quote Link to comment Share on other sites More sharing options...
Larry H Posted April 14, 2013 Share Posted April 14, 2013 plug welds are iffy at best, opening the hole with a countersink helps, stick welding works Quote Link to comment Share on other sites More sharing options...
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