Protecting metal surface from rust with BLO prior to welding

[bagged89s10]

I'm working on some welding projects and want to protect the areas that will be inaccessible after I weld. What's the best way to protect them? I usually coat all my vises with BLO before I paint them. Would BLO be fine? I usually coat the metal, then wipe off the excess after about 15 minutes. I'm thinking about doing this a few days before I weld everything.

My current project is a vise stand which I just started.

 

[nine4gmc]

What about weld through primer? BTW, love the look of that stand!

 

[kazlx]

For a vise stand. I wouldn't even worry about it. If it's all capped off, even sitting outside, it's going to outlast you and your kids.

 

[EdT]

As stated above, it's probably not a big deal whether the insides are rust proofed or not. Pre coating with anything is only going to be effective where the material doesn't burn off from the heat of welding and any that gets into the area you are welding is not going to make that go better. May have no effect, but that's the best you can expect. If the thing is completely sealed you could us e some of the oil they use on tubular aircraft frames, (fogging oil I think), but that would be "injected" into the space after welding. If the finished part is open , you could just pour some BLO into it and slash it around to cover the inside. There will be unanticipated leaks so do it outside. Of course, it doesn't look like you've added much lightness, so sloshing around might be a bit of a problem.

 

[bagged89s10]

Thanks guys. Just trying to get alternatives to using weld through primer on other projects where rust matters.

Nines, I still have to get steel for the top and bottom plates, and trim the curved sections to length. Here is a quick mock up with the 6" Parker.

Don't mind the mess in the background.

 

[sberry]

I aint painting the inside of every piece of steel I fab, paint the stuff you can see. Inside that would last a thousand years to rust inside out.

 

[Rory Bellows]

At first, I thought why didn't you keep the pipe sides even with the beam for strength. Now, I understand. Perfect fit! Should be very strong and cool at the same time. Good design.

 

[Rory Bellows]

I need to find some gears like that.

 

[ishiboo]

I need to find some gears like that.

Looks like a sprocket...

 

[sanddan]

What's BLO?

 

[kazlx]

Boiled linseed oil

 

[G-ManBart]

Looks like a sprocket...

Yep, minus Mike Myers, they're definitely dozer/excavator sprockets or similar.

I found some at the local scrap yard....105lbs each.

 

[j p smith]

I'm working on some welding projects and want to protect the areas that will be inaccessible after I weld. What's the best way to protect them? I usually coat all my vises with BLO before I paint them. Would BLO be fine? I usually coat the metal, then wipe off the excess after about 15 minutes. I'm thinking about doing this a few days before I weld everything.

My current project is a vise stand which I just started.

Bagged98s10, I would do all the finish welding and then drill & tap a hole for 1/8 or 1/4" pipe, warm up the BLO in a pan on the BBQ, pour in a cup and roll so that it coats the inside, let the excess drain out. If is not going to closed you can still pour the BLO so it runs down the insides and drains out. JP