Results 1 to 22 of 22

Thread: Flagpole

  1. #1
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Flagpole

    Hi Guys,

    I am hoping to start building a flagpole this weekend. I chose Galvanized pipe, the upper part is 1-1/2" (1.9" OD) and the lower part is 2" pipe with an ID of about 2".

    I need to weld them together, I was planning about 12-18" of the smaller pipe inside the larger. My supplier gave me some shims to use, but I was hoping someone might have some good tips on laying this out to be plumb and true.

    Thanks.

  2. #2
    Join Date
    Jul 2009
    Location
    Newark, De
    Posts
    291
    Post Thanks / Like

    Re: Flagpole

    I built a similar flagpole years ago and I made four welds 90 degrees apart on the bottom of the smaller pipe and ground then until it would fit tight inside the larger one. I also drilled the larger one above there the smaller would end ( as you said 12" to 18" down) and plug welded it, then welded the joint. I ground everything smooth and filled with bondo and painted it. It came out awesome.

  3. #3
    Join Date
    Jan 2004
    Location
    Northern Cal., Shasta County
    Posts
    9,407
    Post Thanks / Like

    Re: Flagpole

    I did similar for a different purpose. Drilled and tapped the larger pipe in thirds close to the bottom end of the smaller. It only needs to be tapped for something like 1/4" or 5/16ths", which ever you have on hand. Put a couple of small shims at the opening for tempory assistance. Running short bolts in allows you to infinitely tune the smaller tube for straight before welding and holds is true while welding. When you're done = leave the bolts for rigidity, take them out and plug weld the holes, cut them off and put button welds over them, do whatever.
    "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt

  4. #4
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    That bolt idea is cool, I'd have to check to make sure there is enough meat to tap the pipe and have a decent amount of strength in the bolt holes I guess. I'd hate to go to all the trouble and have this thing be cockeyed!

  5. #5
    Join Date
    Apr 2010
    Location
    Okc,OK
    Posts
    234
    Post Thanks / Like

    Re: Flagpole

    If there isn't enough meat, then drill holes and then tack nuts on the outside over the holes. Once it's welded grind the nuts off and plug weld.

  6. #6
    Join Date
    Feb 2009
    Location
    North Eastern Ohio.
    Posts
    105
    Post Thanks / Like

    Re: Flagpole

    Just a thought but what if you cross cut the 2" put a good clamp (pipe) and crushed it down to the 1 1/5 should evenly space as you tighten the clamp. Weld splits and around the top. Should work no? Any way just my 2 cents.....RED.
    Lincoln Percision tig 225 (Water cooled)
    Lincoln 350MP Power mig (with spool gun )
    Lincoln GXT 250 With Tig Module
    Lincoln Ln-25 Pro Dual Power
    Century 50 plasma cutter.now Lincoln .

  7. #7
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    So I went with the threaded bolt hole idea. Worked out pretty good. I used my drill press in the middle and supported each pipe with fixed supports on the other ends. I used my 4' level on each of the pipes until they were dead level, tacked that side then rotated and tacked the other four sides. Then I fully welded all the way around, pulled out the bolts and plug welded the holes. Looks pretty good!

    On my mounting sleeve I welded a nut on to it but happened to use a galvanized one, I expected some ZnO2 fumes, but didn't expect the metal fire, that was kind of cool!

  8. #8
    Join Date
    Nov 2010
    Posts
    206
    Post Thanks / Like

    Re: Flagpole

    Quote Originally Posted by Big Red One. View Post
    Just a thought but what if you cross cut the 2" put a good clamp (pipe) and crushed it down to the 1 1/5 should evenly space as you tighten the clamp. Weld splits and around the top. Should work no? Any way just my 2 cents.....RED.
    That sounds like a good idea to me. Basically make a collet out of the 2" pipe, insert smaller pipe and then close the 2" pipe around the smaller one, weld it up and grind smooth. I think this would make a very smooth transition. Just make sure you cut enough kerf out of the slits where it will close around the smaller pipe. That should take care of the top part of the joint...

    For the bottom, to keep it centered, I would take some bare copper wire and wrap the bottom couple inches of the smaller pipe, tight and evenly so it is a tight fit inside the larger pipe. Do you know what the difference between the I.D. of the larger pipe and O.D. of the smaller pipe is?
    Powcon 400SM
    2-PD60 wire feeders
    Miller XR control
    Alumapro push/pull gun
    Speedglas 9100x
    BFH

  9. #9
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    The gap was about 1/8" all the way around, so pretty big. I ended up building a taper out of weld.

  10. #10
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    AND...Done!
    Attached Images Attached Images  

  11. #11
    Join Date
    Nov 2009
    Location
    Livingston, MT/Houston, Tx
    Posts
    537
    Post Thanks / Like

    Re: Flagpole

    Nice house, funny lookin flag though.

  12. #12
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    It's not all confused with those pesky stars and bars, I like it!

  13. #13
    Join Date
    Jan 2004
    Location
    Northern Cal., Shasta County
    Posts
    9,407
    Post Thanks / Like

    Re: Flagpole

    Hey, there aren't any stars 'n stripes on that flag!!

    Looks good tho.

    I see you have the experts eye ballin for plumb.
    "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt

  14. #14
    Join Date
    Jan 2004
    Location
    Northern Cal., Shasta County
    Posts
    9,407
    Post Thanks / Like

    Re: Flagpole

    Quote Originally Posted by MrBeast View Post
    Nice house, funny lookin flag though.
    It must be a State flag.

    Maybe Vermont or Maine.

    "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt

  15. #15
    Join Date
    Nov 2009
    Location
    Livingston, MT/Houston, Tx
    Posts
    537
    Post Thanks / Like

    Re: Flagpole

    Quote Originally Posted by salem747 View Post
    It's not all confused with those pesky stars and bars, I like it!
    You are right, I much prefer this one.


  16. #16
    Join Date
    Jun 2010
    Location
    Niagara on the lake Canada
    Posts
    1,407
    Post Thanks / Like

    Re: Flagpole

    What are those pesky varments catterwallerin about it is perfect and correct to me...
    Miller thunderbolt 250
    Decastar 135E
    Recovering tool-o-holic
    ESAB OA
    I have been interested or involved in Electrical, Fire Alarm, Auto, Marine, Welding, Electronics ETC to name a just a few. So YES you can own too many tools.

  17. #17
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    "What are those pesky varments catterwallerin about it is perfect and correct to me..."

    I dunno, something to do with some sort of garden party or tea party or something...

  18. #18
    Join Date
    Nov 2009
    Location
    Livingston, MT/Houston, Tx
    Posts
    537
    Post Thanks / Like

    Re: Flagpole

    Quote Originally Posted by salem747 View Post
    "What are those pesky varments catterwallerin about it is perfect and correct to me..."

    I dunno, something to do with some sort of garden party or tea party or something...
    TEA PARTY ON BABY!


  19. #19
    Join Date
    Mar 2010
    Location
    Victoria, BC
    Posts
    2,096
    Post Thanks / Like

    Re: Flagpole

    I loved the ending of your thread salem. Like a good movie where the killer is someone you didn't suspect! All the American flag waving that goes on, on this site, I was expecting the usual ending. But no!!!!! You go and whip out the good ol' Maple Leaf!!! Well played sir, well played!
    Not a sports fan, but Go Canucks !
    200amp Air Liquide MIG, Hypertherm Plasma, Harris torches, Optrel helmet, Makita angle grinders, Pre-China Delta chop saw and belt sander, Miller leathers, shop made jigs etc, North- welders backpack.

  20. #20
    Join Date
    Aug 2004
    Location
    North Central Indiana
    Posts
    5,916
    Post Thanks / Like

    Re: Flagpole

    I dig it. but can the mower get between the pole and the fence?

  21. #21
    Join Date
    Jun 2010
    Location
    Niagara on the lake Canada
    Posts
    1,407
    Post Thanks / Like

    Re: Flagpole

    Quote Originally Posted by salem747 View Post

    garden party or tea party or something...
    Where are you bud? You should say in your location box too but I'm just curious? And if your mower does fit in there you need a bigger mower.;.. So now you say "lets go shoppin".
    Miller thunderbolt 250
    Decastar 135E
    Recovering tool-o-holic
    ESAB OA
    I have been interested or involved in Electrical, Fire Alarm, Auto, Marine, Welding, Electronics ETC to name a just a few. So YES you can own too many tools.

  22. #22
    Join Date
    Oct 2009
    Location
    Prince George, BC
    Posts
    249
    Post Thanks / Like

    Re: Flagpole

    This is why the weed whipper was invented! But our push mower fits in there.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Page generated in 1,594,293,080.78195 seconds with 14 queries