My bumper build...

[Red_Chili]

Purty welds.

Never mind the "for a dadgum novice" part. Purty, and not even relatively so.

For the rear, just go through the bumper. Stronger than the base metal then, IMHO.

 

[Rezarf]

Sounds like that is the route to take. I have see them surface mounted on lots of things so I honestly didn't think much to the contrary... I am such a lemming!

How would you guys suggest correcting this, one slot and fill it up super hot? Two slots if I can fit them? Have Ian mill out a section in the middle to fill them in?

Thanks!

Drew

 

[Beater]

a little concave, (more wirespeed, less stickout) but should do the trick. Looks like you could use a little more gas flow.

Another way to add some strength is to drill and plug the rear. (did I just type that?)

drill .0375 hole into d-ring mount through the base metal, just about .0125 deep. Then over bore the base metal hole. Then fill with weld.

j

 

[Uncle Ben]

a little concave, (more wirespeed, less stickout) but should do the trick. Looks like you could use a little more gas flow.

Another way to add some strength is to drill and plug the rear. (did I just type that?)

drill .0375 hole into d-ring mount through the base metal, just about .0125 deep. Then over bore the base metal hole. Then fill with weld.

j

That would work well!

 

[powderpig]

That would be wonderfull to make the attachment point alot stonger. Just drill a good hole and fill it.

 

[Rezarf]

That seems like a small hole, is that what I am shooting for?

Drew

 

[powderpig]

1/2 to 3/4 sounds good to me. that way you can work the edges first then fill the hole. But others may know better. later robbie

 

[Rezarf]

That makes more sense. I could fit 4 or so 1/2" holes down the rear of the bumper.

Drew

 

[Beater]

I wouldn't go that big. on plug welds, they hold best if you have overlap, as you then spread out the haf (heat affected zone) and you spread the strength out. so, smallish hole into what you want to hold on, then bigger on what you want to hold to.. think along the way of a "T" with the flat part or top of the "T" against the flatside of the base holding the part on.

 

[Rezarf]

Kinda like a counter sink. I get it, small hole then bigger hole.

I won't get to this for a few more days but I will post up when I do.

Drew

 

[Rezarf]

So before I start to drill and weld on this thing again, John do you think that super tiny holes like you mentioned will work well? I was thinking like a 1/8" "bore" and open the bumper to something like a 3/8" hole?

Kinda clueless here. But I think the process is a no brainer for peace of mind.

Thanks!

Drew

 

[Rzeppa]

So before I start to drill and weld on this thing again, John do you think that super tiny holes like you mentioned will work well? I was thinking like a 1/8" "bore" and open the bumper to something like a 3/8" hole?

Yes, whenever you drill large holes with anything other than a CNC (where you might be using a mill instead of a drill bit anyway), you always want to drill a pilot hole first. It is easier to properly locate (doesn't wander like the final large bit) and provides the path for the larger bit. With a drill press you can often go straight from pilot to large, but with a hand drill it is often easier to go 2-3 steps up in size successively.

 

[Rezarf]

Thinking more like, a small hole in the shakle hanger, then a large hole in the base bumper material. However, I agree, stepping the bits makes a huge difference. My welders handbook calls for a "rosette weld" I guess b/c it resembles a rose bud. Robbie, did you call it a rosie weld today, I am just now understanding that I think.

Drew

 

[IanB]

Rosebud!

 

[powderpig]

What are hand book for except to have the correct non slang words in them. Yes a rosette weld. We seem to learn different slang for same weld Ian. You are on the right track Drew. Later Robbie

 

[Beater]

for hillbilly's like me, plug weld is the official term.

 

[Uncle Ben]

Rose weld....

 

[wild turkee]

where did you get the D-ring mounts from, I am building a bumper fro my 4-runner and am looking for the mounts for the D-rings and those are beefy looking. Sam

 

[Rezarf]

where did you get the D-ring mounts from, I am building a bumper fro my 4-runner and am looking for the mounts for the D-rings and those are beefy looking. Sam

Sam-

I got them from Rocky Mountain Quality Machining in Colorado Springs, the dude makes tons of stuff for some of the big names out there, like Currie and others, he had a sweet shop, I found him on ebay, his name is RMQM.

Great product.

Drew

 

[Rezarf]

I am stoked! I am getting FREE powder coat from a student of mine who needs a few projects to coat... just had to share, for some reason my didn't find it too

I will post up some pics when I get it back!

Drew