Height Adjustable Stand

[D.sebens]

Gotcha. That like my projects, aim for tight tolerance and keep loosening up until it works!

 

[woodchucker]

I drilled one hole like that, and the drilled hole sort of fused the tubes together.

I imagined that with all that fusion, I would never have gotten them apart.

I don't understand why you needed holes in both tubes? The height adjustment is the same 1 tube or 2 tubes... No diff.

 

[erikmannie]

I don't understand why you needed holes in both tubes? The height adjustment is the same 1 tube or 2 tubes... No diff.

Yes, you are right. I just realized that this morning. I should have only made one hole in the outside tube.

 

[erikmannie]

Here it is fully extended. I am moving on to the homemade channel.

 

[MikeInOr]

I don't understand why you needed holes in both tubes? The height adjustment is the same 1 tube or 2 tubes... No diff.

1 hole for adjustment, the rest are lightening cuts so the inner tube isn't so heavy.

 

[Firstram]

1 hole for adjustment, the rest are lightening cuts so the inner tube isn't so heavy.

Exactly, speed holes!

 

[erikmannie]

It took me 3 hours to make this homemade channel.

I find GTAW to be a *very* humbling experience. I was not successful today in making a stack of dimes. I was so focused on getting good penetrating tack welds that I ended up stitch welding (with tack welds) too much of the seam to put down a stack of dimes. At least that’s the excuse I’m going with.

I did get adequate (although not 100%) penetration. The tacks were great. I did a lot of weld washing.

I had problems with too much heat (me being *impatient*!) and porosity (from wind + me being cheap about conserving my Argon).

Now I am moving on to 2 socket welds to attach the tubes to the base and channel. These will be stitch welded! That’s why I’m making this weld fixture stand: so that one day I can lay down a stack of dimes.

 

[Manual Mac]

Yes, more holes. Colin Chapman called that Adding Lightness

 

[jmkasunich]

I don't understand why you needed holes in both tubes? The height adjustment is the same 1 tube or 2 tubes... No diff.

Exactly.

However, (too late now), if I was building such a stand I would put a bunch of holes in one tube on 1-1/2" centers. Then in the other tube I would put six holes on either 1-1/4" or 1-3/4" centers. The result would work like a vernier, and would allow it to be pinned in 1/4" increments.

 

[erikmannie]

Welding the .090” or so tube to the .187” or so plate went very nicely!

Because the tube had come off the lathe, it had a perfectly straight edge. The plate had been ground flat with a flap disc (to get the mill scale off), so I had great fit up.

I made 4 serviceable tack welds, & then I had such great fit up that I was able to do a 360° autogenous socket weld. This caused undercut on the plate, but I was happy to see the surfaces fuse completely.

At that point, I stitched
with tack welds. It took a while, but I was patient. Finally, I washed the entire socket bead to make sure that it wet in at the toes.

These are very zoomed in, so all of the flaws are exaggerated. Always with the excuses, right?