Welding table/cart - shielding gas tank holder

I finally got around to purchasing some shielding gas.  I ended up getting it from Arcet in Richmond.  I had intended to lease a largish tank (from a hobby perspective) of around 120-150 cf but they talked me into doing a purchase of a 80 cf tank.  It easy to move the tank around at least.

Anyways, I had intended to strap the large tank along the wall but with the smaller tank I decided to mount it to my welding cart/table.  I had intentionally left a spot on the rear of it to do this someday and now it is time. 

For now, I purchased a tank of Argon/CO2 (C25).  I would like to try out some Tig welding but am going to save up a bit of money and do some further research before selecting a torch/lead and an additional tank of straight argon.  With this in mind, I am planning on how to mount 2 tanks.  I'll just repeat what I did here for the other tank at some point.

I did a couple drawings and decided on a basic idea I wanted to try.  The basic idea involved adding a bracket to the cart to which I could mount a small piece of open ended square tubing mounted vertically.  I would also weld a small length of round bar to a large pipe clamp.  The pipe clamp is slid over the tank and the round bar is slipped into the top of the square tube.  The pipe clamp is then tightened a bit to keep it from moving around. 

Comments/Lessons learned:

• It is hard to keep skills up when you only weld every few months.  My welds are ugly.. :)
• For the pin to clamp weld, I had a good amount of trouble.  I tried the technique of using settings closer to needed for the pin and only slipping briefly onto the clamp but the heat was still WAY TOO high.  It blew through the clamp significantly on one side.  For the other side, I split the difference roughly between that needed for clamp thickness and the pin which was a little better but still well on the high side.  For what I am doing the clamp will work for now but I may do it over with different(lower) settings.
• I may add an additional clamp  higher up for better support or just wrap a chain around for "just in case".
• A minor challenge for this was that I have a folding side extension on the cart and when it folds down, part of the hinge bracket was going to rub on the tank.  A minute with the angle grinder allowed me to trim off the (unneeded) corner of the bracket which was rubbing.

Here is a rear view of the cart.  The new bracket is on the left side and you can see the pin in the square tube.

Here are 2 side views of without/with the tank.  You can see the square tube which accepts the pin.

 

Here is the pipe clamp with the pin welded on - this is shown upside down from how it is used.

 

Hope you found this interesting.

Have a blessed day!
Scott